ANSYS, Inc. Release Notes - sharcnet.ca · ANSYS, Inc. Release Notes ANSYS, Inc. Release 12.1 Southpointe November 2009 275 Technology Drive 002825 Canonsburg, PA 15317 ANSYS, Inc

ANSYS, Inc. Release Notes

Release 12.1ANSYS, Inc.

November 2009Southpointe

275 Technology Drive 002825

Canonsburg, PA 15317 ANSYS, Inc. is

certified to ISO

9001:[email protected]

http://www.ansys.com

(T) 724-746-3304

(F) 724-514-9494

Copyright and Trademark Information

© 2009 SAS IP, Inc. All rights reserved. Unauthorized use, distribution or duplication is prohib-

ited.

ANSYS, ANSYS Workbench, Ansoft, AUTODYN, EKM, Engineering Knowledge Manager, CFX,

FLUENT, HFSS and any and all ANSYS, Inc. brand, product, service and feature names, logos

and slogans are registered trademarks or trademarks of ANSYS, Inc. or its subsidiaries in the

United States or other countries. ICEM CFD is a trademark used by ANSYS, Inc. under license.

CFX is a trademark of Sony Corporation in Japan. All other brand, product, service and feature

names or trademarks are the property of their respective owners.

Disclaimer Notice

THIS ANSYS SOFTWARE PRODUCT AND PROGRAM DOCUMENTATION INCLUDE TRADE SECRETS

AND ARE CONFIDENTIAL AND PROPRIETARY PRODUCTS OF ANSYS, INC., ITS SUBSIDIARIES,

OR LICENSORS. The software products and documentation are furnished by ANSYS, Inc., its

subsidiaries, or affiliates under a software license agreement that contains provisions concern-

ing non-disclosure, copying, length and nature of use, compliance with exporting laws, war-

ranties, disclaimers, limitations of liability, and remedies, and other provisions. The software

products and documentation may be used, disclosed, transferred, or copied only in accordance

with the terms and conditions of that software license agreement.

ANSYS, Inc. is certified to ISO 9001:2008.

U.S. Government Rights

For U.S. Government users, except as specifically granted by the ANSYS, Inc. software license

agreement, the use, duplication, or disclosure by the United States Government is subject to

restrictions stated in the ANSYS, Inc. software license agreement and FAR 12.212 (for non-

DOD licenses).

Third-Party Software

See the legal information in the product help files for the complete Legal Notice for ANSYS

proprietary software and third-party software. If you are unable to access the Legal Notice,

please contact ANSYS, Inc.

Published in the U.S.A.

Table of Contents

1. Global . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1. Installation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2. Licensing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2. ANSYS Mechanical APDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1. Structural ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1.1. Linear Dynamics .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1.1.1. Modal Assurance Criterion Performance Enhancements .... . . . . . . . . . . . 3

2.1.1.2. Animated Sequence Support Enhancements ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1.1.3. Simplorer Interface .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1.1.4. CMOMEGA, CMDOMEGA, and CMACEL Maximum Component

Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2. Low-Frequency Electromagnetics ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2.1. New Element for Modeling Planar and Axisymmetric Magnetic

Fields .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.3. Thermal ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3.1. Convection Analysis ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.4. Solvers ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4.1. High Performance Computing Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4.2. Distributed ANSYS Supports Intel MPI ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4.3. Distributed ANSYS Supports Prestressed Modal Cyclic Symmetry .... . . . . . . 6

2.4.4. PCG Lanczos (LANPCG) Solver Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4.5. Distributed Sparse (DSPARSE) Solver Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.5. Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.5.1. New Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.5.2. Modified Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.6. Elements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.6.1. New Elements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.6.2. Modified Elements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.7. Documentation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.7.1. New Technology Demonstration Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.7.2. Spin Softening Documentation Updates .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.7.3. Documentation Updates for Programmers .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.7.3.1. Routines and Functions Updated .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.7.3.2. Creating a Dynamic-Link (DLL) Library .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.8. Known Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.8.1. Argument List Changed for User Subroutine usrsurf116 .... . . . . . . . . . . . . . . . . . . 13

2.9. The ANSYS Customer Portal ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3. ANSYS Workbench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.1. Advisories .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

iiiRelease 12.1 - © 2009 SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of

ANSYS, Inc. and its subsidiaries and affiliates.

3.2. ANSYS Workbench 12.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.2.1. ANSYS Workbench 12.1 Linux Support ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.2.1.1. Supported Platforms, Applications, and CAD Products .... . . . . . . . . . . . . 15

3.2.1.2. Linux Behavior ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.2.1.3. Linux Restrictions .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.2.2. Journaling and Scripting in ANSYS Workbench .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2.3. Other ANSYS Workbench 12.1 Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.3. DesignModeler Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.3.1. Advisories .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.3.2. Feature Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.3.3. Model Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.3.4. CAD Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.3.5. Incompatibilities and Changes in Product Behavior from Previous Re-

leases .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.4.TurboSystem Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.4.1. BladeGen .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.4.1.1. BladeGen New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.4.1.2. Known Limitations Applicable to BladeGen .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.4.2. BladeEditor ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.4.2.1. BladeEditor New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . 25

3.4.2.2. Known Limitations Applicable to BladeEditor ... . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.4.3. Vista TF .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.5. ANSYS Icepak Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.5.1. New and Modified Features in ANSYS Icepak 12.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.5.2. Known Limitations of ANSYS Icepak 12.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.6. CFX-Mesh Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.7. Meshing Application Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.8. Mechanical Application Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3.9. FE Modeler Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.10. DesignXplorer Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

3.11. Engineering Data Workspace Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

3.12. EKM Desktop .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

3.13. ANSYS AQWA ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4. ANSYS ASAS, ANSYS AQWA, FEMGV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.1. ANSYS ASAS .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.2. ANSYS ASAS BEAMCHECK .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

4.3. ANSYS AQWA ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

4.4. FEMGV ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5. AUTODYN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

5.1. Introduction .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

5.2. ANSYS AUTODYN Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

5.2.1. Efficiency Improvements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Release 12.1 - © 2009 SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information ofANSYS, Inc. and its subsidiaries and affiliates.iv


5.2.2. Bonded Connections With Line Bodies .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

5.2.3. Bonded Connections With DCR Contact Method .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

5.2.4. 2D Unstructured Volume Solvers ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

5.2.5. 2D Unstructured Interaction .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

5.2.6. 2D Rigid Materials ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

5.2.7. Parallel 3D Multi-Material Euler Coupled to Lagrange .... . . . . . . . . . . . . . . . . . . . . . . 52

5.2.8. HP-MPI Message Passing for Supported Windows Platforms .... . . . . . . . . . . . . 53

5.3. Explicit Dynamics (ANSYS) System Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.3.1. Pre-Stress Initial Condition .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.3.2. Support for Cylindrical Coordinate Systems .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.3.3. Hydrostatic Pressure Load .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.3.4. Expressions for Pressure and Velocity Boundary Conditions .... . . . . . . . . . . . . . 53

5.3.5. Bonded Connections with Line Bodies .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.3.6. Bonded Connections with DCR Contact Method .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.3.7. Analysis Settings .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.3.8. Post Processing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

6. ANSYS CFX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

6.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

6.1.1. ANSYS CFX in ANSYS Workbench .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

6.1.2. ANSYS CFX in General ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.1.3. ANSYS CFX Documentation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.1.4. ANSYS CFX-Pre .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.1.5. ANSYS CFX-Solver ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.1.6. ANSYS CFD-Post ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.2. Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.2.1. CFX-Pre .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.2.2. CFX-Solver Manager .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

6.2.2.1. Interpolation with Moving Mesh .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

6.2.3. ANSYS CFX-Solver ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

6.2.3.1. Multiphase .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

6.2.3.2. GGI Interfaces .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

6.2.3.3. Particle Transport ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

6.2.3.4. Combustion, Radiation and Material Properties ... . . . . . . . . . . . . . . . . . . . . . . . 58

6.2.3.5. Turbulence .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

6.2.3.6. Boundary Conditions .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

6.2.3.7. Miscellaneous .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

6.2.4. CFD-Post ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

6.3. Known Limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

7. ANSYS TurboGrid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

8. ANSYS ICEM CFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

8.1. Highlights of ANSYS ICEM CFD 12.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

8.2. Key New Features/Improvements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

vRelease 12.1 - © 2009 SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of



8.2.1. Workbench Readers .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

8.2.2. Interface Improvements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

8.2.3. Linux Support ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

8.2.4. Tetra .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

8.2.5. Prism .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

8.2.6. Hexa .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

8.2.7. Multi-zone .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8.2.8. BF-Cart ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8.2.9. Mesh Editing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8.2.10. Output .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

8.2.11. General ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

8.3. Known Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

8.4. Documentation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

8.4.1. Tutorials ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

8.4.2. Demo Room ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

9. ANSYS CFD-Post . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

9.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

9.2. Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

9.3. Known Limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

10. ANSYS FLUENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

10.1. Introduction .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

10.1.1. Installation Procedures for FLUENT (Windows and UNIX/Linux Plat-

forms) ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

10.2. New Features .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

10.3. Supported Platforms .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

10.4. Known Limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

10.5. Limitations That No Longer Apply in FLUENT 12.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

10.6. Updates Affecting Code Behavior ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Release 12.1 - © 2009 SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information ofANSYS, Inc. and its subsidiaries and affiliates.vi


Chapter 1: Global

The following installation and licensing changes apply to all ANSYS, Inc. products at

the 12.1 release. Be sure to read the Release Notes for your individual product(s) for

additional installation and licensing changes specific to your product(s).

If you would like to access a PDF file of the ANSYS Release 12.0 Release Notes, click

here.

1.1. Installation

• At Release 12.1, ANSYS Workbench is available on Linux 32 and Linux x64 plat-

forms. Please see ANSYS Workbench Linux Restrictions for information on restric-

tions for using ANSYS Workbench on Linux.

• The Install Required Prerequisites option of the installation launcher on Win-

dows now evaluates the software on your system and installs only those pre-

requisites that you do not already have installed. You should always choose this

option before choosing to install the products on Windows machines.

• The installation launcher on Windows has added options for Mechanical APDL

(ANSYS) to install HP MPI and Intel MPI for running Distributed Mechanical APDL

(ANSYS). See the ANSYS, Inc. Windows Installation Guide and the Distributed ANSYS

Guide for more information.

• You can now run both the installation and the uninstall processes silently. See

the ANSYS, Inc. Installation Guide for your platform for detailed instructions on

using the -silent option.

• Many ANSYS, Inc. products, including ANSYS Workbench, are available in English,

German, and French on Windows platforms at Release 12.1. Please see the ANSYS,

Inc. Windows Installation Guide and your products' help for information on using

a translated version.

1Release 12.1 - © 2009 SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of


../../ai_rn_2647.pdf

../../ai_rn_2647.pdf

1.2. Licensing

• At ANSYS Release 12.1, the license manager daemons (lmgrd and ansyslmd)

have been upgraded to FLEXlm 10.8.8 (FLEXnet 10.8.8). You must use this version

of the license manager with ANSYS 12.1.

• At ANSYS Release 12.1, the ANSYS Licensing Interconnect (a component of the

ANSYS License Manager) was upgraded. You must upgrade to the 12.1 version

of the ANSYS License Manager for ANSYS 12.1 products to run.

• ANSYS, Inc. now offers physics-neutral HPC licenses that can be used across most

ANSYS, Inc. applications. Please see HPC Licensing in the ANSYS, Inc. Licensing

Guide for detailed information on using the new ANSYS HPC and ANSYS HPC

Pack licenses.

• ANSYS POLYFLOW and ANSYS Icepak work with the ANSYS, Inc. License Manager

at Release 12.1. You should be able to continue using your legacy licensing for

these products, but we recommend upgrading to the ANSYS, Inc. License Man-

ager.

• VT Accelerator technology is now enabled in Mechanical APDL, with a valid

Structural, Mechanical, Professional, or Multiphysics solver license. Beginning

with Release 12.1, you no longer need an ANSYS HPC license to enable VT Accel-

erator.

Release 12.1 - © 2009 SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information ofANSYS, Inc. and its subsidiaries and affiliates.2

Chapter 1: Global

Chapter 2: ANSYS Mechanical APDL

This release of the Mechanical APDL application contains all of the capabilities from

previous releases plus several new features and enhancements. Areas where you will

find changes and new capabilities include the following:

2.1. Structural

2.2. Low-Frequency Electromagnetics

2.3.Thermal

2.4. Solvers

2.5. Commands

2.6. Elements

2.7. Documentation

2.8. Known Incompatibilities

2.9.The ANSYS Customer Portal

Also see The ANSYS Customer Portal (p. 14) for important information about this release.

For information about changes to the ANSYS Workbench Products, see the ANSYS

Workbench Products Release Notes.

2.1. Structural

Release 12.1 includes the following new features and enhancements for structural

analyses:

2.1.1. Linear Dynamics

This release offers the following improvements for structural analyses involving linear

dynamics:

2.1.1.1. Modal Assurance Criterion Performance Enhancements

The performance of Modal Assurance Criterion (MAC), which matches nodal solutions

from two results (RSTMAC), has been enhanced. The code segment that checks

nodal coordinate locations between the two .rst files has been redesigned to im-

prove performance.



2.1.1.2. Animated Sequence Support Enhancements

The ANHARM command can now provide the time transient animated sequence of

time harmonic results from complex mode shapes for all complex eigensolvers. Sup-

ported eigensolvers include MODOPT, QRDAMP, DAMP, and UNSYM.

An option has been added to ANHARM to remove the amplitude decay or growth

component in the animations. The command argument NPERIOD specifies the second

period number for animating complex modes. If NPERIOD = -1, animation occurs

without the decay or growth component.

2.1.1.3. Simplorer Interface

The state-space matrices from a structural model can be exported to Simplorer to

simulate mechatronics systems. The reduced model is based on a modal analysis. The

inputs and outputs are defined through load vectors or table array parameters. The

state-space matrices file (file.spm) is generated in postprocessing using the new

SPMWRITE command. This file can be imported into Simporer to automatically create

a mechanical component.

For more information, see "State-Space Matrices Export" in the Advanced Analysis

Techniques Guide.

2.1.1.4. CMOMEGA, CMDOMEGA, and CMACEL Maximum Compon-

ent Enhancements

The upper limit of 100 components applicable for CMOMEGA, CMDOMEGA, and

CMACEL has been removed. An unlimited number of components can now be used

with these component based inertia load application commands.

2.2. Low-Frequency Electromagnetics

Release 12.1 includes the following enhancement for low-frequency electromagnetic

analyses:

2.2.1. New Element for Modeling Planar and Axisymmetric

Magnetic Fields

A new 2-D quadrilateral element, PLANE233, is now available for modeling planar

and axisymmetric magnetic fields. It is defined by eight or six nodes and has a



http://www.ansoft.com/products/em/simplorer/

thickness input with the planar geometry or a fraction of the 360 degree basis with

the axisymmetric geometry.

The element has up to two degrees of freedom per node: Z-component of the mag-

netic vector potential (AZ) and electric scalar potential (VOLT). It is applicable to

static, time-harmonic, and time-transient electromagnetic analyses.

In static and transient analyses, the element can be used to model nonlinear magnetic

materials and permanent magnets. Harmonic electromagnetic analyses include both

the eddy currents and the displacement current effects.

The true electric potential degree of freedom in electromagnetic analyses allows for

coupling with discrete circuit elements and solid low-frequency electric elements.

The element also has the legacy option to work with time-integrated electric potential.

In addition to in-plane magnetic and through-the-thickness electric fields, the element

calculates magnetic forces, Joule heat, and electromagnetic energy.

The element analysis options and magnetic force calculation methods are consistent

with those of SOLID236 and SOLID237.

2.3. Thermal

Release 12.1 includes the following enhancement for thermal analyses:

2.3.1. Convection Analysis

A two-extra-node option is now available for 3-D thermal surface effect element

SURF152 (KEYOPT(5) = 2). The new option offers greater accuracy than the one-extra-

node option.

For higher thermal accuracy in fluid flows, two new options have been added to

FLUID116 (KEYOPT(9) = 1 and 2): central difference and exponential schemes. Three

methods are available for mapping the FLUID116 nodes to the SURF152 elements:

minimum centroid distance method, projection method, and hybrid method (MSTOLE).

For more information, see Using the Surface-Effect Elements in the Thermal Analysis

Guide.



2.3.1. Convection Analysis

2.4. Solvers

Release 12.1 includes the following new enhancements that improve solution proced-

ures and features.

2.4.1. High Performance Computing Enhancements

2.4.2. Distributed ANSYS Supports Intel MPI

2.4.3. Distributed ANSYS Supports Prestressed Modal Cyclic Symmetry

2.4.4. PCG Lanczos (LANPCG) Solver Enhancements

2.4.5. Distributed Sparse (DSPARSE) Solver Enhancements

2.4.1. High Performance Computing Enhancements

To take full advantage of multicore desktop systems, the default shared-memory

parallel capability (which uses two CPU processors by default) has been extended to

operations of element stiffness generation. For many applications (such as linear

static or stress expansions), a savings of up to 50 percent in elapsed time is realized

for element generation.

2.4.2. Distributed ANSYS Supports Intel MPI

In addition to the default HP-MPI, Distributed ANSYS now supports Intel MPI on Linux

and Windows platforms, including Windows 32-bit and 64-bit systems.

2.4.3. Distributed ANSYS Supports Prestressed Modal Cyclic

Symmetry

Distributed ANSYS now supports prestressed modal cyclic symmetry analysis. Previ-

ously, it supported modal cyclic symmetry analysis without prestress effects.

2.4.4. PCG Lanczos (LANPCG) Solver Enhancements

The PCG Lanzcos solver has been improved to significantly reduce the amount of I/O

performed.

2.4.5. Distributed Sparse (DSPARSE) Solver Enhancements

The parallel ordering option (DSPOPTION,PARORDER) for the distributed sparse

(DSPARSE) solver has been significantly improved in terms of both performance and

its ability to perform equation-ordering operations.



2.5. Commands

This section describes changes to commands at Release 12.1.

Some commands are not accessible from menus. The documentation for each com-

mand indicates whether or not a menu path is available for that command operation.

For a list of commands not available from within the GUI, see Menu-Inaccessible

Commands in the Command Reference.

2.5.1. New Commands

2.5.2. Modified Commands

2.5.1. New Commands

The following new commands are available in this release:

MSTOLE -- Adds two extra nodes from FLUID116 elements to SURF152 elements for

convection analyses.

SPMWRITE -- Calculates the state-space matrices and writes them to the .spm file.

2.5.2. Modified Commands

The following commands have been enhanced in this release:

ANHARM -- Generates a time-transient animated sequence of time-harmonic results

or complex mode shapes. The command can now provide the time-transient animated

sequence of time-harmonic results from complex mode shapes for all complex eigen-

solvers. A new NPERIOD argument has also been added to remove the amplitude

decay or growth component in the animations.

CMOMEGA, CMDOMEGA, and CMACEL -- The upper limit of 100 components applic-

able for each of these component-based inertia-load-application commands has been

removed. An unlimited number of components can now be used.

2.6. Elements

This section describes changes to elements at Release 12.1.

Some elements are not available from within the GUI. For a list of those elements,

see GUI-Inaccessible Elements in the Element Reference.

2.6.1. New Elements

2.6.2. Modified Elements



2.6. Elements

2.6.1. New Elements

The following new element is available in this release:

PLANE233 -- This 2-D quadrilateral element is available for modeling planar and

axisymmetric magnetic fields. It has up to two degrees of freedom per node: Z-com-

ponent of the magnetic vector potential (AZ), and electric scalar potential (VOLT).

The element is applicable to a static, time-harmonic, and time-transient electromag-

netic analyses.

2.6.2. Modified Elements

The following elements have been enhanced in this release:

SURF152 -- For improved accuracy in convection analyses, this 3-D surface effect

element has a new option for adding two extra nodes from FLUID116 elements.

FLUID116 -- For higher thermal accuracy in fluid flows, two new options have been

added to this thermal-flow element (KEYOPT(9) = 1 and 2): central difference and

exponential schemes.

2.7. Documentation

The 12.1 release includes the following product documentation enhancements and

improvements:

2.7.1. New Technology Demonstration Guide

2.7.2. Spin Softening Documentation Updates

2.7.3. Documentation Updates for Programmers


The 12.1 release introduces the Technology Demonstration Guide.

The purpose of the new guide is to encourage you to take advantage of the extraordin-

arily broad simulation capabilities of ANSYS Mechanical APDL. The guide showcases

the features and effectiveness of Mechanical APDL by presenting a series of analysis

problems from a variety of engineering disciplines.

The problems are more substantive and complex than examples found in the standard

documentation set. The guide thoroughly examines the physics involved with each

problem and the considerations necessary for translating problems into numerical



models. Approximation issues, accuracy considerations, and recommended practices

are discussed.

How Problems Are Presented

Each problem description provides information about the nature and physical char-

acteristics of the problem, specific modeling techniques, material properties, boundary

conditions and loading, analysis details and solution controls.

A comprehensive results and discussion section carefully examines analysis results

(often comparing them to baseline or “known good” results using more traditional

analysis methods), and illustrates why specific strategies and methods were chosen.

Each problem concludes with valuable hints and recommendations for performing

a similar type of analysis. In many cases, references are provided for additional back-

ground information. Each example presented can therefore serve as a template for

setting up similar types of simulations.

Your Results May Vary

A 64-bit Linux system was used for the problems described in the guide. The results

shown for each problem may differ from those that you obtain depending upon the

computer hardware and operating system platforms in use at your site.

Problem Summary

The following analysis demonstration problems are available:

A nonlinear analysis of a 2-D hyperelastic seal as-

sembly using manual rezoning with remeshing via

Nonlinear Analysis of a 2-D

Hyperelastic Seal Using

Rezoning the element-splitting method.The problem shows

how multiple vertical rezoning steps can be used to

ensure convergence and completion of an analysis.

Shows how to easily set up and perform an analysis

involving both axisymmetric and nonaxisymmetric

Nonlinear Transient Analysis

of a Camshaft Assembly

components.The problem demonstrates how model-

ing with general axisymmetric element technology

can reduce computational resources significantly

while maintaining the same degree of accuracy as a

simulation using a full 3-D model.

Uses coupled pore-pressure element technology to

study the creep response of a lumbar motion segment

Simulation of a Lumbar Mo-

tion Segment




under compression.The simulation reveals the inter-

action between the solid phase and the fluid phase

in soft tissues.

Studies fluid-pressure-penetration effects on a sealing

system.The use of seals is primarily to prevent the

Fluid-Pressure-Penetration

Analysis of a Sealing System

transfer of fluid (liquid, solid, or gas) between two or

more regions.

Uses solid-shell element technology to model a

layered-composite structure.The problem simulates

Delamination of a Stiffened

Composite Panel Under a

Compressive Load interface delamination through the debonding cap-

ability of contact elements.

Demonstrates current structural-shell element tech-

nology and illustrates how it can be used to accurately

Rocket Nozzle Extension

Simulation

model the orthotropic thermal expansion in curved-

shell structures. Section offsets are applied when

connecting shell-to-shell or to shell-to-other element

types.

Demonstrates the advantages of elbow element

technology over traditional shell and pipe element

Nuclear Piping System Under

Seismic Loading

technology for modeling pipe bends in a typical

nuclear piping system.

Shows how to solve a brake squeal problem. Three

analysis methods are highlighted: linear non-

Brake Squeal Analysis

prestressed modal, partial nonlinear prestressed

modal, and full nonlinear prestressed modal.The

problem demonstrates sliding frictional contact and

uses complex eigensolvers to predict unstable modes.

Demonstrates how hyperelastic curve-fitting is used

to select constitutive model parameters to fit experi-

Calibrating and Validating a

Hyperelastic Constitutive

Model mental data. Several issues influencing the accuracy

of the curve fit are discussed.Validation of the result-

ing constitutive model is demonstrated by comparis-

on with a tension-torsion experiment.

A reliability study of a composite overwrapped pres-

sure vessel (COPV).The model uses reinforcing fibers

Reliability Study of a Compos-

ite Overwrapped Pressure

Vessel in a layered composite. A finite-element simulation

of a COPV is performed first to gain insight into its

mechanical behaviors, then simulation results are

processed using failure analysis to determine the most



vulnerable layer.The problem generates linearized

stress output for pressure-vessel design optimization

and code compliance.

A problem that accounts for the missing-mass effect

and rigid-response effects in a spectrum analysis, and

Dynamic Simulation of a

Nuclear Piping System Using

RSA Methods how including those effects improves results accuracy

as compared to full-transient analysis results.The

problem uses a piping system model from an actual

nuclear power plant.

Demonstrates the efficiency and usefulness of

rezoning in a simulation of metal-forming processes.

Ring-Gear Forging Simulation

with Rezoning

Rezoning facilitates the convergence of a nonlinear

finite element simulation in which excessive element

distortion occurs.

Shows how to easily set up and perform a thermal-

stress analysis of a cooled turbine blade.The problem

Thermal Stress Analysis of a

Cooled Turbine Blade

uses surface-effect capabilities to simulate convection

loading on solid regions, and one-dimensional fluid-

flow capabilities to obtain a highly accurate thermal

solution for convection loading.

Demonstrates the linear elastic fracture mechanics of

3-D structures.The problem shows how fracture

Evaluation of Mixed-Mode

Stress-Intensity Factors for 3-

D Surface Flaws mechanics can be used to evaluate mixed-mode

stress-intensity factors and J-integrals. Analyses of a

simple semicircular surface flaw in a rectangular block

and a warped flaw along a tubular joint are discussed.

Uses a centrifugal impeller blade to show how to

perform cyclic symmetry modal and harmonic ana-

Cyclic Symmetry Analysis of

a Centrifugal Impeller Model

lyses.The problem illustrates cyclic modeling methods

and solution approaches.

A digger-arm assembly problem demonstrating a

transient dynamic analysis of a multibody system.The

Transient Dynamic Analysis

of a Digger-Arm Assembly

problem shows how to model joints and rigid/flexible

parts, mitigate overconstraints, and represent flexible

parts using component mode synthesis (CMS).

Uses residual vectors to improve the solution accuracy

in modal subspace based analysis methods, such as

Dynamic Simulation of a

Printed Circuit Board As-

modal superposition and power spectral density (PSD)sembly Using Modal Analysis

Methods analyses.The problem includes a study of the compu-




tational efficiency of the results-expansion procedure

used to obtain the full model solution.

An impact simulation using a model of a 3-D metal

bar hitting a rigid wall. The problem shows the ad-

Impact of a Metal Bar on a Ri-

gid Wall

vantages of using impact constraints for modeling

contact in a nonlinear transient dynamic analysis.

Several combinations of available time-integration

methods and contact algorithms are also investig-

ated, using different material models to show how

various choices affect the performance and accuracy

of the finite-element solution of impact problems.

A nonlinear buckling and post-buckling analysis using

nonlinear stabilization.The problem uses a stiffened

Buckling and Post-Buckling

Analysis of a Ring-Stiffened

cylinder subjected to uniform external pressure toCylinder Using Nonlinear

Stabilization demonstrate how to find the nonlinear buckling loads,

achieve convergence at the post-buckling stage, and

interpret the results.

A rotordynamic analysis of a rotating structure. A 2-

D axisymmetric geometry is extracted from a 3-D

Rotordynamics of a Shaft As-

sembly Based Representative

solid model of the rotating structure. Modal, CampbellModel of a Nelson-Vaugh Ro-

tor diagram, and unbalance response analyses are per-

formed for the 2-D and 3-D models. Results for the 2-

D axisymmetric model are compared to the full 3-D

solid model results.

Demonstrates the fictive-temperature model using

the Tool-Narayanaswamy (TN) shift function to study

Viscoelastic Analysis of an All-

Ceramic Fixed Partial Denture

(FPD) residual stresses in an all-ceramic fixed partial denture

(FPD). A coupled-field solution process, including

transient thermal and nonlinear structural analyses,

is used in the problem simulation.

Effectively uses a current-technology beam element

to simulate a wind turbine blade, a slender composite

Modal Analysis of a Wind

Turbine Blade Using Beam

Elements structure. A simplified 1-D beam-based model of the

typically complex blade geometry is especially useful

in the early design stage, when small design variations

can lead to partial or even complete reconstruction

of a 3-D model, generally an impractical solution given

the difficulty of building the model.



2.7.2. Spin Softening Documentation Updates

Spin-softening documentation in the Structural Analysis Guide, the Command Reference,

and the Theory Reference for the Mechanical APDL and Mechanical Applications has

been enhanced to better present prestressed large-deflection analysis (NLGEOM,ON).

To incorporate the spin-softening effect of a rotating structure undergoing large de-

flections, the updated documentation describes the use of the OMEGA/CMOMEGA

commands with KSPIN = OFF (default setting) in a static analysis, and then the use

of OMEGA/CMOMEGA with KSPIN = ON in a subsequent prestressed modal analysis.

2.7.3. Documentation Updates for Programmers

Release 12.1 includes the following documentation updates for programmers:

2.7.3.1. Routines and Functions Updated

2.7.3.2. Creating a Dynamic-Link (DLL) Library

2.7.3.1. Routines and Functions Updated

Routines and functions documented in the Programmer's Manual for ANSYS have been

updated to reflect the current source code. To see specific changes in a file, ANSYS,

Inc. recommends opening both the old and current files (using a text editor that

displays line numbers), then comparing the two to determine which lines have

changed. You can copy the updated files to your system by performing a custom in-

stallation of the product.

2.7.3.2. Creating a Dynamic-Link (DLL) Library

Documentation has been added to describe the process for setting up user-program-

mable features in Windows systems using a DLL library, rather than by creating a

custom executable. See Creating a Dynamic-Link (DLL) Library in the Programmer's

Manual for ANSYS for details.


The following incompatibility with prior releases is known to exist at Release 12.1.

2.8.1. Argument List Changed for User Subroutine usrsurf116

The argument list for the user programmable subroutine usrsurf116 has changed

at this release. Subroutines written to follow the usrsurf116 format of previous



2.8.1. Argument List Changed for User Subroutine usrsurf116

releases are not compatible when linked with v. 12.1. See Subroutines for Customizing

Loads in the Programmer's Manual for ANSYS for the revised usrsurf116 format.

2.9. The ANSYS Customer Portal

If you have a password to the ANSYS Customer Portal (http://www.ansys.com/custom-

erportal), you can view additional documentation information and late changes.

Navigate to Product Information> Product Documentation> Readme files and

late document changes.

The portal is also your source for ANSYS, Inc. software downloads, service packs,

product information (including example applications, current and archived document-

ation, undocumented commands, input files, and product previews), and online

support.



http://www.ansys.com/customerportal



Chapter 3: ANSYS Workbench

3.1. Advisories

Virus Scanning Products

The ANSYS Workbench uses scripting languages to display information in the user

interface. These scripting languages when used in World Wide Web pages are sus-

ceptible to viruses. Many virus scanning products will install a proxy to verify that

scripts on a web page do not contain a virus. Some virus scanning products may leak

excessive amounts of memory when running the ANSYS Workbench product. Check

your specific product's support pages to see if a memory leak has been reported and

the solution for it.

3.2. ANSYS Workbench 12.1

Release 12.1 builds on the Release 12.0 framework, most notably adding support for

the Linux operating system and for journaling and scripting.

3.2.1. ANSYS Workbench 12.1 Linux Support

ANSYS Workbench now has limited support on Linux platforms at Release 12.1.

3.2.1.1. Supported Platforms, Applications, and CAD Products

The Linux platforms and the applications listed below are supported.

• Supported Linux Platforms

– Red Hat Enterprise Linux 5 32-Bit

– SUSE Linux Enterprise 10 64-Bit

• Supported ANSYS Products, Applications, and Workspaces

– Workbench Framework

– CFD-Post



– CFX

– CFX-Mesh

– DesignModeler

– DesignXplorer

– FLUENT

– Icepak

– Mechanical APDL

– Meshing

– TurboGrid

– Vista TF

• Supported CAD Readers

– ACIS

– IGES

– Parasolid

– STEP

• Supported CAD Plugins

– Unigraphics NX5 on SUSE Linux Enterprise 10 64-Bit only

– Unigraphics NX6 on SUSE Linux Enterprise 10 64-Bit only

3.2.1.2. Linux Behavior

If an ANSYS Workbench project file that was saved using a Windows installation of

ANSYS Workbench contains data from an application that is not supported on the

Linux installation of ANSYS Workbench (for example, the Mechanical application or

the FE Modeler application), the project will be closed automatically when you open

it (File > Open from the ANSYS Workbench main menu) on Linux. The same behavior

may also occur for a project file involving users on two Windows installations, in cases

where the source installation includes applications that were not installed with the

target installation.

3.2.1.3. Linux Restrictions

Please be aware of the Linux restrictions listed below.



Features related to Compact Mode are not supported. These include multi-window

Minimize, Maximize, Restore, Close, and Tile functionality, as well as Keep on Top

mode for the Project Schematic and automatic collapse/restore of the Project

Schematic when not in use/in use.

3.2.2. Journaling and Scripting in ANSYS Workbench

With 12.1, ANSYS Workbench now supports journaling and scripting. Journaling

captures the operations that modify data in an ANSYS Workbench session and records

them in a journal file. A journal file can be replayed to return the state of your ANSYS

Workbench session, or a journal can be modified to change or incorporate additional

operations, which is referred to as scripting. ANSYS Workbench journaling and

scripting allows you to easily replay previously recorded journals or reconstruct pre-

viously created projects, automate repetitive tasks, or execute simulation projects in

batch mode.

Journaling fully supports all operations performed in the ANSYS Workbench framework

or native applications, including all operations performed in the Project Schematic,

Engineering Data, and Design Exploration workspaces. Project file and parameter

management is also fully supported by journaling. Although operations performed

in data-integrated applications like DesignModeler and the Mechanical and Meshing

applications are not journaled, commands native to these applications can be embed-

ded in an ANSYS Workbench script.

Python-Based ANSYS Workbench journaling and scripting is based on the Python

programming language. Python is a concise, yet highly readable programming lan-

guage, and its standard data types and comprehensive tools provide a powerful

scripting foundation for ANSYS Workbench.

Object-Based Scripting ANSYS Workbench takes an object-based approach to

scripting. The interaction with data and operations is defined by “objects”, or data

structures consisting of both properties and methods. The scripting interface provides

a set of query functions which return these objects. Once an object reference has

been obtained, its properties can be directly queried and modified, or its methods

can be called to invoke more complex operations and calculations.

Portable and Platform-Independent ANSYS Workbench journals and scripts are

platform-independent, meaning that a journal can be recorded on one computer

platform and executed on another. The ANSYS Workbench scripting interface also

provides several utilities to make them highly portable. For example, the locations

of project files, such as CAD files, are recorded using a path root preference that allows



3.2.2. Journaling and Scripting in ANSYS Workbench

the script to be replayed on a different machine or file system location without having

to modify absolute file paths.

Convenient Command Window In addition to replaying journals and executing

scripts, ANSYS Workbench provides a command window where individual commands

can be manually invoked. To avoid tedious typing, the command window supports

command completion and maintains a history of previously-issued commands for

easy recall.

Support for Other Scripting Languages ANSYS Workbench can interact with a

series of data-integrated applications, including Mechanical APDL, ANSYS FLUENT,

ANSYS CFX, DesignModeler, and the Mechanical and Meshing applications. These

applications have their own native scripting languages, and the ANSYS Workbench

scripting interface allows application-native scripts for data-integrated applications

to be embedded in an ANSYS Workbench script. This coordination of scripting lan-

guages allows existing investments in scripting to be re-used.

Complete Reference Documentation The public scripting interface for ANSYS

Workbench is fully documented in the Workbench Scripting Guide. In addition to de-

tailed descriptions of the methods and data structures, this guide provides several

examples to better understand the capability. Before attempting to use ANSYS

Workbench scripting, you should become familiar with the documentation and the

concepts described in it.

3.2.3. Other ANSYS Workbench 12.1 Enhancements

Data Integration

At Release 12.1, ANSYS Workbench has added data integration of the AQWA, POLY-

FLOW, and Icepak applications.

External Connection Add-in

A significant enhancement at Release 12.1 is the introduction of the External Connec-

tion add-in, which allows external applications (applications not integrated with ANSYS

Workbench) to participate in the ANSYS Workbench workflow by consuming and

producing parameters. This addin enables external applications to take advantage of

ANSYS Workbench capabilities such as the design point table, as well as DesignXplorer

capabilities such as Design of Experiments, sensitivity, and six sigma design studies.



Using the External Connection addin does not require writing compiled code. An

XML configuration file defines communication between the external process and

ANSYS Workbench, including:

• input and output parameters to be exposed in ANSYS Workbench

• the name of the external script or executable to be run when the system is up-

dated from ANSYS Workbench

• custom properties (which might affect how the external program executes)

• directory structure

• error handling

• custom menu entries (to be displayed in the cell context menu within ANSYS

Workbench)

In addition, it is also possible to add custom toolbar and/or menubar entries to enable

further customization, where Python scripts can be executed from these custom

entries.

For more information on using the External Connection add-in, see the External

Connection Add-in for Workbench Guide.

Other Enhancements

Other enhancements to the ANSYS Workbench framework at Release 12.1 include:

• Improved error handling during Update All Design Points operations: During

an update of multiple design points, any errors or warnings encountered will

result in messages being written to the Message view, allowing other design

point updates to continue without waiting for you to respond to message dialogs.

A summary dialog is presented after all design point updates are complete.

• Visual indication of failure to some state icons: If Refresh or Update operations

fail on a cell in the Project Schematic, a red X will be indicated in addition to the

appropriate state icon. Three failure states are possible:

– Refresh Failed, Refresh Required

– Update Failed, Update Required

– Update Failed, Attention Required

• Single selection for export all design points: An option was added that allows

you to mark all design points for export with a single selection.



Other Enhancements

• Improved deleted files message handling: Messages have been improved

when you open a project for which files have been deleted. The new messages

provide direction on recovering and/or proceeding with the project.

• Recently used files: An option has been added that allows you to control the

number of files displayed in the recently used files lists.

3.3. DesignModeler Release Notes

Advisories (p. 20)

Feature Enhancements (p. 20)

Model Enhancements (p. 21)

CAD Enhancements (p. 22)

Incompatibilities and Changes in Product Behavior from Previous Releases (p. 23)

3.3.1. Advisories

Mechanical Desktop

Mechanical Desktop will not be supported in future releases of ANSYS.

3.3.2. Feature Enhancements

Mid-Surface Feature Improvements

The Mid-Surface feature has been modified in two ways:

1. The output bodies are grouped into parts based on the original bodies they

came from if the resultant mid-surface of a solid body produces multiple surface

bodies.

2. The automatic face pair detection logic has been enhanced to more intelligently

select face pairs in regions where holes and slots exist.

Non-uniform Enclosure Groups

Within the Enclosure feature, the Cushion option has been enhanced to allow values

for box or cylinder type enclosures to be either uniform or non-uniform. Available

for all enclosure shapes except User Defined, the non-uniform cushion values may

also be set as design parameters.



Load DesignModeler Database Option

New at ANSYS release 12.1, the Load DesignModeler Database option provides for

quickly loading a different AGDB file without first closing and then reopening

DesignModeler.

Auto-Save Now and Restore Auto-save File

After selecting Generate after a specified number of times, the DesignModeler applic-

ation now automatically saves backup files of a model. The Auto-save Now feature

is used to save immediately. The Restore Auto-save File feature enables stored files

to be accessed.

Surface From Faces Feature

Surface bodies can now be created in the DesignModeler application by using the

Surfaces From Faces feature. The feature can be used to produce multiple surface

bodies, depending on the connectivity of the selected faces.

Multiple Construction Points

The Point feature now has the ability to define multiple points when using Manual

Input as the point definition option. Any number of construction points may be created

from a single Point feature by adding additional point groups to the Details View

property list.

3.3.3. Model Enhancements

Hard Edge Repair Tool

The Repair feature now includes the Repair Hard Edges option. Used on solid and

surface bodies only, the tool is used to remove hard edges from a model.

Large Model Support

DesignModeler can now support models larger than 1 km in size. A large model

support checkbox option will be available when using either Meter or Foot as the

unit. When enabled, DesignModeler will permit models up to 1000 km in size.



Large Model Support

Face Level Visibility

Three Hide/Show Faces options have been added to the Context Menu. Applicable

to bodies that are not suppressed and not marked as hidden, the options are:

• Hide Face(s): to hide selected faces.

• Hide All Other Faces: to hide all faces in the model, except selected faces.

• Show All Faces: to reset the visibility of all faces in the model to visible.

Solid-Surface Mixed Dimension Support

When sharing topology in the 3D modeling mode, the types of bodies in a multi-

body part often dictate how the part will share topology. ANSYS release 12.1 now

allows surface body and solid body parts to use the automatic, imprints, and none

method to share topology.

Solid-surface Mixed Part Support during Import

The Mixed Import Resolution option, which allows mixed dimensions to be imported

as components of assemblies, now includes a Solid and Surface option. Solid and

Surface means only solid(s) and surface(s) from a part are transferred to the ANSYS

Mechanical application or DesignModeler.

3.3.4. CAD Enhancements

Linux Reader Support

ANSYS Workbench now supports the Linux operating system. The readers and plugins

supported are:

• Reader for ACIS (SAT)

• Reader for Parasolid

• Reader for IGES

• Reader for STEP

• Reader for Pro/Engineer (32-bit only)

• Reader for Unigraphics NX (64-bit only)



Solid Edge ST1/V100 Support

ANSYS release 12.1 supports Solid Edge ST including synchronous document import

via the Solid Edge plugin. Solid Edge describes synchronous modeling as the enable-

ment of simultaneous, direct geometry creation and modification through precision

sketching, region selection, face selection, and handle selection.

CATIA V5 Layer Support

CATIA V5 Layers can now be imported into ANSYS Workbench via the Named Selection

option. When a CATIA V5 model is imported, the Named Selections created for each

CATIA V5 Layer is processed.

Autodesk Inventor 2010 Support

ANSYS Workbench now supports Autodesk Inventor 2010, this includes the ability to

comprehensively import Inventor parts which contain multiple solid bodies.

CAD Configuration Manager

This tool is now available on Linux, allowing users to conveniently add, change or

remove CAD sources.

3.3.5. Incompatibilities and Changes in Product Behavior

from Previous Releases

Import Line Bodies Behavior

At ANSYS release 12.0 the default option for Import Line Bodies was changed to co-

incide with the added support for line body import from a number of geometry in-

terfaces. This was necessary because the entities which are being imported as line

bodies from a number of CAD system were creating mixed dimension multibody

parts. To avoid the confusion on this matter the preference was turned off. You can

modify the value for a given session in the Project Schematic before editing or in the

details view for any import/attach feature in the DesignModeler application. You can

also revert to the old preference set by making a onetime change to the Project

Schematic's options panel using Tools> Options> Geometry Import and then checking

the Line Bodies option.



Import Line Bodies Behavior

3.4. TurboSystem Release Notes

TurboSystem is a set of software applications and software features that help you to

perform turbomachinery analyses in ANSYS Workbench.

ANSYS TurboGrid is a meshing tool for turbomachinery blade rows. The release notes

for ANSYS TurboGrid are given at “ANSYS, Inc. Release Notes > Chapter 7, ANSYS Tur-

boGrid (p. 61)”.

CFX-Pre, a CFD preprocesor, and CFD-Post, a CFD postprocessor, are part of the ANSYS

CFX product. Both of these products have Turbomachinery-specific features. The re-

lease notes for CFX-Pre are given at “ANSYS, Inc. Release Notes > Chapter 6, ANSYS

CFX (p. 55)”. The release notes for CFD-Post are given at “ANSYS, Inc. Release Notes

> Chapter 9, ANSYS CFD-Post (p. 69)”.

Release notes for Release 12.1 of the remaining TurboSystem applications are provided

in the following sections:

BladeGen (p. 24)

BladeEditor (p. 25)

Vista TF (p. 27)

About the 12.0 Release of TurboSystem provides historical information about Release

12.0 of TurboSystem for the benefit of users who migrated directly from Release 11.0

to Release 12.1.

Note

After reviewing these release notes, you are encouraged to see Usage

Notes, which describes some known TurboSystem-related workflow issues

and recommended practices for overcoming these issues.

3.4.1. BladeGen

BladeGen is a geometry-creation tool for turbomachinery blade rows.

These release notes for BladeGen are divided into the following topics:

3.4.1.1. BladeGen New Features and Enhancements

3.4.1.2. Known Limitations Applicable to BladeGen



3.4.1.1. BladeGen New Features and Enhancements

There are no significant new features in BladeGen.

3.4.1.2. Known Limitations Applicable to BladeGen

• In Vista CCD, the semi-perfect gas option fails to work correctly and was therefore

disabled. If the ideal gas option is not sufficient for your case, the real gas option

is still available. The intention of the semi-perfect gas option was to provide a

more accurate solution than the ideal gas option provides for air and nitrogen,

by allowing the ratio of specific heats to vary with temperature. The semi-perfect

gas option is typically only useful when working with air compressors of very

high pressure ratio, for example 9:1.

• Be aware that when using real gas properties in Vista CCD, the RGP data is not

saved with the BladeGen model. Instead, the RGP data is in a separate file and

the Vista definition contains a reference to it. When you view the Vista CCD

definition for a model that uses real gas properties, you may be asked to locate

the RGP file if the file specified in the Vista definition cannot be found.

3.4.2. BladeEditor

ANSYS BladeEditor is a plugin for ANSYS DesignModeler for creating, importing, and

editing blade geometry.

These release notes for BladeEditor are divided into the following topics:

3.4.2.1. BladeEditor New Features and Enhancements

3.4.2.2. Known Limitations Applicable to BladeEditor

3.4.2.1. BladeEditor New Features and Enhancements

• Auxiliary view (Beta feature)

This feature includes a blade-to-blade view and a blade lean angle graph.

• Blade design parameterization (Beta feature)

This feature enables you to assign an input parameter to any numeric BladeEditor

feature property.

• If you use the VistaTFExport feature in Release 12.1, and the ThroatArea feature

is used for a selected Blade, the throat information for that blade will be written

to the .geo file. This information may improve the calculation of the choke mass

flow rate in the Vista TF solver. Without this information, Vista TF will make its



3.4.2. BladeEditor

own estimate of the throat area. In Release 12.0, the throat widths are not added

to the Vista TF geometry file.

Note that the new features marked as “Beta” in the above list are not available until

you enable Beta options in ANSYS Workbench.

3.4.2.2. Known Limitations Applicable to BladeEditor

KNOWN DATA LOSS PROBLEM - You can very easily destroy your BladeEditor

models by simply updating a project or otherwise processing a Geometry cell, de-

pending on your license preference settings. This problem can affect you if you have

any ANSYS DesignModeler licenses. To learn how to avoid this problem, please read

the following section in the ANSYS BladeEditor documentation: Configuring the

BladeModeler License.

There is a known limitation with the ImportBGD feature when importing multiple

BladeGen files. If you have imported two or more BladeGen files using separate Im-

portBGD features, and have turned on shroud clearance for one of these features,

then the import process may fail. The workaround is to import the case(s) with shroud

clearance first, then import the others.

Furthermore, changing the Blade Design cell Shroud Clearance property from "Relative

Layer" or "Absolute Layer" to "None" will have no effect on the ImportBGD feature.

In this case, you must change the Shroud Clearance property directly in the ImportBGD

feature.

When you create a flow path contour sketch, you must be editing in a (global) ZX-

plane. The local X and Y axes on the sketch plane correspond to the global Z and X

axes, respectively. The local X axis corresponds to the machine axis and the local Y

axis corresponds to the radial coordinate axis. Consequently, all flow contours in the

sketch must have positive Y coordinates.

The following is a list of known limitations that apply to new BladeEditor features

(but not the ImportBGD feature):

• Model:

– Only the ‘Angle/Thickness’ mode is supported.

• Layers:

– Only specified span fraction layers are supported.

• Angle Definition:

– Only Theta and/or Beta definitions are supported.



– Only ‘General’ and ‘Ruled Element’ spanwise distributions are supported.

– At least one angle definition must exist on either the hub or shroud layer.

– The Angle View Data Location must be ‘Meanline’.

– Splitting and joining curve segments is not supported.

• Thickness Definition:

– Only the ‘Normal to Meanline on Layer Surface’ thickness data type is suppor-

ted.

– The ‘vs. Cam’ and ‘% Cam vs. % Cam’ thickness specifications are not suppor-

ted.

– Only the ‘General’ spanwise distribution is supported.

– At least one thickness definition must exist on either the hub or shroud layer.

– Splitting and joining curve segments is not supported.

3.4.3. Vista TF

Vista TF is a tool for performing rapid throughflow analyses of rotating machinery

for preliminary design purposes.

Enhancements to Vista TF:

• The leading and trailing edges for each blade row are now shown in the 2D plots

in CFD-Post.

Installation note: Vista TF is always installed, but CFD-Post is required to post-process

Vista TF results. Without CFD-Post, the Results cell of the Vista TF system will not be

visible.

Vista TF was developed by PCA Engineers Limited, Lincoln, England.

3.5. ANSYS Icepak Release Notes

Release 12.1 of ANSYS Icepak has new features and defect fixes.

3.5.1. New and Modified Features in ANSYS Icepak 12.1

• Graphical User Interface

– ANSYS Icepak can be run as a standalone product or within the ANSYS

Workbench framework. See Chapter 3 of the User's Guide.



3.5.1. New and Modified Features in ANSYS Icepak 12.1

– The File menu and the file commands toolbar options are different in ANSYS

Workbench. See Section 2.1.2 of the User's Guide.

• ECAD import/export

– Export of Simplorer file in the Parameters and optimization panel. See

Section 29.7.1 of the User's Guide.

• Modeling and meshing

– Multi-level meshing can be enforced for all objects. See Section 7.3.8 of the

User's Guide.

• Postprocessing and reporting

– Electric current density, joule heating density and Wall YPlus variables

are available for postprocessing. See Section 36.2 of the User's Guide.

– ANSYS CFD Post files are automatically written out when running ANSYS

Icepak in Workbench. See Section 5.7.7 of the User's Guide.

• Miscellaneous

– ANSYS Icepak data transfer occurs in ANSYS Workbench 12.1 from Icepak to

Mechanical.

– Tetrahedral mesher has been discontinued and is no longer available in ANSYS

Icepak.

– ANSYS Icepak 12.1 supports both the Fluent FLEXlm and ANSYS FLEXlm license

managers.

– ANSYS Icepak workflow in ANSYS Workbench 12.1 allows the automatic export

of STEP files from Design Modeler to ANSYS Icepak.

3.5.2. Known Limitations of ANSYS Icepak 12.1

• MCM/BRD import is available only on the Windows and Linux platforms.

• Gerber import is available only on the Windows platform.

• ANSYS Icepak to Mechanical workflow in Workbench is available only on the

Windows platform.

• STEP export may not work on some objects, especially cylindrical objects.

• STEP export is not supported on the IBM and HP-Alpha UNIX (Tru64 UNIX) plat-

forms.

• Non-conformal assemblies cannot intersect each other.



• Non-conformal assemblies cannot touch objects (except the cabinet and hollow

objects.)

• Thin plates cannot intersect or touch non-conformal assemblies.

• CAD shaped objects cannot intersect or touch non-conformal assemblies.

• The biaxial conductivity option for objects other than thin plates is not allowed.

• Fast trials cannot be used when the properties of the default fluid are paramet-

erized.

• Batch queuing capability cannot be used to run trials/jobs across platforms.

• ANSYS (Classic) solution data file export is available only on the 32–bit Windows

platform.

• Cartesian Hex-Dominant mesh option cannot be used when 2D CAD shapes are

present.

• Microsoft Job Scheduler can only be used on the Windows platform.

3.6. CFX-Mesh Release Notes

Known Limitations

The known limitations of CFX-Mesh are:

• CFX-Mesh on 64-bit versions of Microsoft Windows Vista is unable to support 2D

regions for some imported geometry files, e.g. SAT files.

• The user interface for CFX-Mesh is always in English regardless of the language

setting.

3.7. Meshing Application Release Notes

Summary of Goals for the Meshing Application Release 12.1

Release 12.1 of the Meshing application addresses these goals:

• To provide Linux support

• To improve upon the robustness and usability of Release 12.0, especially as they

relate to GAMBIT and CFX-Mesh user migration



Summary of Goals for the Meshing Application Release 12.1

Key Technology Areas for the Meshing Application in Release

12.1

Release 12.1 of the Meshing application offers new features and enhancements in

the following key technology areas, details of which are described below:

• Framework integration

– Linux support

– Journaling and scripting

– Meshing 0-thickness walls

– PolyFlow integration

– Exporting faceted geometry to TGrid

– FLUENT mesh export enhancement

• Mesh controls

– Mesh metric graph

– Mesh numbering controls

– Mixed order meshing

– Virtual Topology improvements

– Named Selection improvements

– Post inflation improvements

• Mesh methods

– MultiZone improvements

– Sweep improvements

– Patch Independent Tetra improvements

– Smoothing improvements

Framework Integration Enhancements

The following Framework integration enhancements have been made at release 12.1

of the Meshing application:

• Linux support. Refer to ANSYS Workbench 12.1 Linux Support (p. 15) for details.

• Journaling and scripting at the project level. Refer to Journaling and Scripting in

ANSYS Workbench (p. 17) for details.



• Using the Patch Conforming Tetra or Patch Independent Tetra mesh methods,

you can mesh 0-thickness walls, or baffles, as non-manifold faces of a solid body.

You do not have to adjust the mesh size to capture the thin regions. Inflation

layers can be grown off of the 0-thickness walls. As is true when meshing other

types of walls, if you select Program Controlled inflation, baffles are automatically

selected to be inflation boundaries unless they are in a Named Selection.

• PolyFlow is now data-integrated with ANSYS Workbench, allowing for a new

workflow: CAD/DesignModeler > Meshing > PolyFlow > CFD-Post.

In support of this integration, you can right-click a Mesh cell and choose Import

Mesh File to import a legacy PolyFlow mesh file (with extension .poly, .neu, or

.msh) into the Mesh cell. You can also transfer a mesh (.poly file) from the Mesh

cell of a Mesh system into the Setup cell of a downstream PolyFlow system.

In addition, a new Solver Preference for PolyFlow has been added to tailor the

mesh to your needs. The appropriate defaults are set based on this preference.

• You can export faceted geometry for subsequent import into TGrid, allowing for

a new workflow: CAD/DesignModeler > Meshing > TGrid > FLUENT. Part and

body names, as well as Named Selections, are preserved in the exported .tgf file.

The .tgf file has the same format as a .msh file and will be recognized as a "Mesh

File" when read into TGrid 5.2 (File/Read/Mesh... menu item).

• In support of FLUENT mesh export, in this release an orientation check/correction

will be performed for 3D geometry models exported as 2D mesh such that all

2D cells will have the same orientation. A manual correction of the orientation

of the geometry face(s) is no longer needed.

Mesh Control Enhancements

The following mesh control enhancements have been made at release 12.1 of the

Meshing application:

• A bar graph has been added to the Mesh Metric option. The graph contains

bars for each element shape represented in the model's mesh, and can be ma-

nipulated to view specific mesh statistics of interest. You can select an individual

bar or multiple bars on the graph, and the Geometry window displays only those

elements that meet the criteria corresponding to the selected bar(s). Using the

bar graph controls page, you can filter the information the graph presents by

setting characteristics such as: number of bars to display, element types to display,

minimum/maximum ranges for the X- and Y-axes, and content of the Y-axis

(either Number of Elements or Percent of Volume/Area). Depending on the



Mesh Control Enhancements

metric of interest, you can adjust the minimum or maximum range of the X-axis

to locate and estimate the number of bad elements in a mesh.

• The new Mesh Numbering feature allows you to renumber the node and/or

element numbers of a generated meshed model consisting of flexible parts. The

feature is useful when exchanging or assembling models and could isolate the

impact of using special elements such as superelements.

• Mixed order meshing is supported across bodies for the following mesh methods:

Patch Conforming Tetra, General Sweep, Thin Sweep, Hex Dominant, Quad

Dominant, and Triangles. This means that when scoping one of these mesh

methods to bodies in a multibody part, you can set the Element Midside Nodes

option to Kept (resulting in higher order elements) for some bodies and to

Dropped (resulting in lower order elements) for others. Mixed order meshing

results in one layer of quadratic elements at the interface face. These elements

will be higher order at the interface face but with dropped midside nodes where

adjacent to the linear elements in the mesh. On a Mesh Metric bar graph, mixed

order elements are displayed as quadratic element types.

• This release includes improvements in Virtual Topologies (VTs), which are faceted

representations of the original geometry. By default, mesh projection is to the

facets. For improved projection, you can use the new Project to Underlying

Geometry option to project the nodes back to the underlying geometry instead.

In addition to this new option, other enhancements have been made to improve

the underlying representation of VTs, resulting in increased robustness and better

mapped meshes on VTs.

• Named Selection improvements include:

– A new option is available to make it easier to locate and resolve problems

when the same entity is a member of more than one Named Selection (that

is, when Named Selections are “overlapping”). If overlapping Named Selections

are detected during mesh export, the export fails with an error message. By

right-clicking on the Mesh object and selecting the Show Geometry in

Overlapping Named Selections option from the context menu, you can

display the geometry in the overlapping Named Selections in the Geometry

window.

– You can use the new Include in Program Controlled Inflation option to select

specific Named Selections for inclusion in Program Controlled inflation. (By

default, faces in Named Selections are not selected to be inflation boundaries

when Use Automatic Tet Inflation is set to Program Controlled.)

• Post inflation improvements include:



– When used with Post inflation, the Transition Ratio option now works sim-

ilarly to how it works with Pre inflation. (Transition Ratio controls the growth

transition from prism layers to tets.)

– Robustness is improved when using Post inflation with the Layer Compres-

sion option for the Collision Avoidance control.

Mesh Method Enhancements

The following mesh method enhancements have been made at release 12.1 of the

Meshing application:

• MultiZone mesh method improvements include:

– For revolved models, improved wedges at axis and increased robustness and

smoothness

– For projections, support for helix models and increased robustness for cases

having side faces with high curvature

– For multibody parts, increased robustness and better handling of side faces

– For inflation cases, increased robustness

• Sweep mesh method improvements include:

– For General Sweep, better support for sphere source faces and increased ro-

bustness

– For Thin Sweep, increased robustness for thicker models and variable thick-

ness

– Improved conflict error handling for scoped sizing controls with mapped

mesh, and improved highlighting of problem areas for both General and Thin

Sweep

• Patch Independent Tetra mesh method improvements include:

– Support for the Behavior option. You can specify a Behavior option of either

Soft or Hard, in order to give preference to either curvature refinement or

the size control respectively.

– Meshing is more robust due to the addition of out-of-memory errors and

improved handling of complicated geometries.

• In certain cases in which Smoothing is set to High, an additional smoothing at-

tempt will be performed automatically to improve element quality measured in

terms of Skewness.



Mesh Method Enhancements

3.8. Mechanical Application Release Notes

This release of the Mechanical application contains all of the capabilities from previous

releases plus many new features and enhancements. Areas where you will find changes

and new capabilities include the following:

Incompatibilities and Changes in Product Behavior from

Previous Releases

Release 12.1 includes several new features and enhancements that result in product

behaviors that differ from previous releases. These behavior changes are presented

below.

• Force Reaction and Moment Reaction Probes support Cartesian coordinate

systems only. Prior to release 12.1, these probes allowed users to choose cylindric-

al coordinate systems for displaying results. The reported results however were

incorrect.

• When resuming a project created in release 12.0 that uses ANSYS FLUENT 1-way

FSI, you cannot import previously defined loads because the syntax for the file

path has changed. New loads will need to be added to import data.

Resuming Databases from Previous Releases

Note the following when resuming databases from previous releases:

• Explicit Dynamics (ANSYS) System: When resuming an Explicit Dynamics (ANSYS)

system that was created prior to release 12.1, a Pre-Stress object will automatic-

ally be added to the object tree.

General Enhancements

The following general enhancements have been made at release 12.1:

• Explicit Dynamics (ANSYS) System: Pre-Stress Implicit to Explicit Data

Transfer. For an Explicit Dynamics (ANSYS) system, the Initial Conditions folder

now includes a Pre-Stress object to control the transfer of data from an implicit

static or transient structural analysis to the explicit dynamics analysis. Transferrable

data include the displacements, or the more complete Material State (displace-

ments, velocities, stresses, strains).



• Explicit Dynamics (LS-DYNA Export) System: Additional Unit Systems. In

addition to "mm, mg, ms" the following unit systems are now also supported for

export to the LS-DYNA solver:

– m, kg, s

– mm, ton, s

– in, lbf, s

Geometry Enhancements

The following geometry enhancements have been made at release 12.1:

• Mesh Numbering. The Mesh Numbering feature allows users to renumber the

node and element numbers of a generated meshed model consisting of flexible

parts. The feature is useful when exchanging or assembling models and could

isolate the impact of using special elements such as superelements.

• Snap to Mesh Nodes. When defining a path with two points, a new context

menu option ensures that the path is contained within the finite element mesh.

• Thermal Point Mass. For transient thermal analyses, a Thermal Point Mass object

has been added as a medium to store or draw heat from surrounding objects.

• Surface Construction Geometry. Users can now precisely define a section plane

to be used for evaluating results.

• Show Mesh. When a Path (from Construction Geometry) is active, users can

choose to see the underlying mesh instead of the geometry.

Connection Enhancements

The following connection enhancements have been made at release 12.1:

• Explicit Entry for Configuring Joint Rotation. The Connections toolbar now

includes a field for typing a value for the joint rotation increment. This feature

is an alternative to dragging the mouse cursor to perform this function.

• Explicit Dynamics (ANSYS) System:

– Bonded Connections with Line Bodies. Parts containing beam elements

can now be included in bonded connections with surface or volume bodies

using the Body Interaction object.

– Bonded Connections with DCR Contact Method. The discrete contact re-

sponse contact method can now be used in models containing bonded

connections.



Connection Enhancements

• Explicit Dynamics (LS-DYNA Export) System:

– Support for Line Body Contacts. Contacts that involve line bodies are now

accounted for by also exporting the *CONTACT_AUTOMATIC_GENERAL

keyword.

– Support of Keyword Snippets for Contacts. The Keyword Snippet facility

available with the LS-DYNA Export systems is now also supported under

Contact Regions. This facility allows for contacts definitions specific to the

LS-DYNA solver that are not available in the Details view of the contact region

to be defined and scoped to geometry.

Loads/Supports Enhancements

The following loads/supports enhancements have been made at release 12.1:

• Constraint Equations. The constraint equation feature allows sections of a

model to be bound together according to a user-defined equation.

• Line Pressure as a Function of Curvilinear Abscissa. For Line Pressure loads

in a 3-D analysis or Pressure loads in a 2–D analysis, pressure can be defined as

a function of the distance along a path as a tabular load or a function load.

• Rotational Velocities Applied to Bodies. For assemblies, rotational velocity can

be applied to all bodies or to selected bodies.

• Surface to Surface Radiation. Thermal Radiation can now be applied between

two surfaces, or between a body and the ambient temperature.

• Ansoft-Mechanical Data Transfer. You can import a thermal load generated

by the Ansoft HFSS, Maxwell, or Q3D Extractor application and perform an ana-

lysis using the load. In the case of HFSS and Maxwell, you can also export the

thermal results so that they can be imported back into Ansoft HFSS or Maxwell.

• Icepak-Mechanical Data Transfer. The Mechanical application allows you to

transfer nodal temperature data from Icepak into Mechanical and perform an

analysis using the imported loads.

• Explicit Dynamics (ANSYS) System:

– Support for Cylindrical Coordinate Systems. Displacement and Velocity

boundary conditions now support cylindrical coordinate systems in the Explicit

Dynamics (ANSYS) system. The y-component of the cylindrical system defines

the angular rotation or velocity of the scoped nodes/rigid bodies.

– Hydrostatic Pressure Load. The hydrostatic pressure boundary condition is

now supported in the Explicit Dynamics (ANSYS) system.



– Expressions for Pressure and Velocity Boundary Conditions. Pressure and

velocity boundary conditions can now be defined as continuous functions

of time in the Explicit Dynamics (ANSYS) system environment. The value of

the load/constraint is extracted directly from the defined expression for each

time point during the simulation (no discretization or interpolation is used).

Solution Enhancements

The following solution enhancements have been made at release 12.1:

• Solve Remotely in Synchronous Mode. Synchronous solutions are now capable

of running “in process” or “out of process” (background) based on the new Solve

Remotely in Synchronous Mode feature. This new option enables the product

to leverage the computational power of solving on a remote machine, but in a

synchronous fashion, allowing linked analyses and/or analyses involving adaptive

refinement loops to be solved with a single action within the Mechanical applic-

ation. Refer to the table under Solve Process Capabilities for further details.

• More Efficient Joint Stop, Lock and Release Handling in Transient Structural

(MBD) Analyses. Solvers used in Transient Structural (MBD) Analyses now use

the Linear Complementarity Problem (LCP) algorithm to handle stop, lock and

release conditions more efficiently.

• Explicit Dynamics (ANSYS) System: Double Precision Solver Option. You now

have the option to solve explicit dynamics analyses using either the single or

double precision executables using the Precision option of the Solver Controls

under Analysis Settings.

Results Enhancements

The following results enhancements have been made at release 12.1:

• Averaged and Unaveraged Result Enhancements. Various display options have

been added for viewing averaged and unaveraged result contours.

• Average Result on a Surface. Any result item (including User Defined results)

can be evaluated on a surface previously defined through Construction Geometry.

• Contact Based Force Reactions. For a Force Reaction probe applied to a contact

region, a new setting allows the reaction calculations to come directly from the

contact elements themselves. This results in accurate force reactions even when

the contact region overlaps with other boundary conditions, such as other contact

regions, supports, etc.



Results Enhancements

• Coordinate Systems Results. Nodal and elemental coordinate system result

options are now available.

• Radiation Probe. A Thermal Radiation probe is now available.

• Trigonometric Functions Added to User Defined Result Expressions. Basic

trigonometric functions have been added to the mathematical operations sup-

ported for user defined results.

• User Defined Results for Transient Structural (MBD) Analyses. Full support

is available for User Defined Results in Transient Structural (MBD) Analyses.

• Explicit Dynamics (ANSYS) System: Result Tracker Filtering. Explicit Dynamics

analyses typically involve a large number of time points, sometimes in the order

of hundreds of thousands. The tracker results data tends to include high frequency

noise that can obscure slow rate phenomena in low speed applications. A low-

pass filtering option is now available that allows you to distinguish real trends

in the data, by removing the high frequency noise. This feature can be controlled

from the Details view of a Result Tracker object.

Ease of Use Enhancements

The following ease of use enhancements have been made at release 12.1:

• Hide Faces. Selected faces on a model can now be hidden to enable viewing

inside the model. This feature is especially useful for viewing bodies with interior

cavities, such as engine blocks.

• Flip Periodic Low and Periodic High Settings. When using Periodic regions in

an electromagnetic analysis, the Periodic Low and Periodic High settings can

now be reversed by choosing a new context menu option.

• Worksheet Enhancements. The Worksheet tab in previous releases has been

replaced by a Worksheet window that displays alongside the Geometry window,

allowing simultaneous viewing of the model and the Worksheet information.

• Explicit Dynamics (LS-DYNA Export) System: Addition of Parameter Names

in Exported Keyword File. The parameter names for each card in the exported

keywords have been added as comments to aid the understanding of the file

when read.

Other Enhancements

The following additional enhancements have been made at release 12.1:



• Mechanical-Electronics Interaction (Mechatronics) Data Transfer . The

Mechanical application allows you to export a reduced model file to automatically

create a Mechanical Component in Simplorer.

3.9. FE Modeler Release Notes


Previous Releases

• If you open an R12.0 project in R12.1, the information will be migrated to the

12.1 environment if necessary and messages about the migration may be repor-

ted.

• If the Model cell of an FE Modeler system in an imported R12.0 project contains

an initial geometry generated over a mesh that contains 1D elements, you must

update your initial geometry. Everything that existed below the Initial Geometry

will be lost (for example: Target Configuration, Transformations, Parasolid Geo-

metry, etc.) when you update it.

• Body grouping only applies to meshes imported from NASTRAN, ABAQUS, and

Mechanical APDL files.

• If you change any of the properties on an imported mesh after you have imported

the meshes in FE Modeler, you will be prompted to destroy all of the work that

has been done on the meshes in the FE Modeler Editor and you will have to re-

analyze the meshes.

• The Read-Only mode has been added to FE Modeler: if the Editor cannot retrieve

an appropriate license, it will open in Read-Only mode. In this mode, no editing

can be done except for deleting objects.

The Following New Features Provide Extended FE Modeler

Capabilities in the Workbench Environment:

• The Coordinate Systems View has been added to give the user a list of all co-

ordinate systems used in the model and their locations and orientations.

• The Constraint Equations View provides the user with a list of all constraint

equations imported into the model and their locations.

• Multiple meshes can be added to a single FE Modeler analysis system and will

be combined into an Assembly Mesh.

• Multiple input meshes can be added to an FE Modeler system from files that are

in acceptable formats or from connections to upstream analysis systems. You



The Following New Features Provide Extended FE Modeler Capabilities in the

Workbench Environment:

http://www.ansoft.com/products/em/simplorer/

can set the properties of the meshes, delete meshes, and change the displayed

order of the messages from the Project Schematic.

• An FE Modeler system can accept input meshes from an upstream FE Modeler

system.

• Each input mesh has properties that depend on the source of the mesh (file type

or upstream connection).

• Body grouping specified for a file applies only to the entities from that file.

• You can specify the ID renumbering for Nodes and elements that are contained

in the input meshes. For any input mesh (file or upstream connection), you can

specify whether the IDs for Nodes and elements should be retained as they are

in the original mesh, or automatically renumbered as they are read into the FE

Modeler Editor. If no renumbering is specified, the mesh analysis will be termin-

ated if an ID overlap occurs. All other entity IDs (such as materials or thicknesses)

are automatically renumbered.

The Following New Behavior is Seen when Working in FE

Modeler Systems:

• An upstream Mechanical system can transfer the following data to the FE

Modeler system: Materials, Mesh, Geometry, Named Selections, and Thicknesses.

• Unit systems can be specified for meshes imported from files (however, not for

files from the Mechanical and Meshing applications). They cannot be specified

for upstream connections, except those that come from Mechanical APDL systems.

All meshes will be scaled to the unit system of the Assembly Mesh.

• The tables describing the possible upstream and downstream connections to an

FE Modeler system have been updated.

• Node or Face components can be used when generating the initial geometry to

create geometric entities on which you can apply loads, constraints, etc. Node

components can create faces, edges, and vertices on the geometry.

• Rotation and Translation transformations can be applied to whole parts in the

Geometry.

• Use the Write Solver File button to write the FE Modeler data to a solver file in

order to easily generate a customized Mechanical APDL, ABAQUS, STL, or NAS-

TRAN input deck.



3.10. DesignXplorer Release Notes


Previous Releases

• All DesignXplorer capabilities are now available on Linux.

• DesignXplorer is now localized in French and German.

• For any feature that submits generated Design Points to the analysis system for

solution (Design of Experiments, Parameters Correlation, etc.), Design Points are

solved simultaneously if the analysis system is set up to do so; sequentially, if

not.

The Following New Features Provide Extended Design Explor-

ation Capabilities in the Workbench Environment:

• A Min-Max Search is now an optional component of the Response Surface. The

Min-Max Search examines the entire output parameter space of a Response

Surface to approximate the minimum and maximum values of each output

parameter.

• Manual refinement is now available for all Response Surface types that allows

the user to enter specific points into the set of points used to calculate the Re-

sponse Surface.

• Any new Refinement Design Points that are generated by any of the refinement

methods will be retained by the Response Surface and used for any further

analysis of that Response Surface (using a different Response Surface Type, etc.).

• The Correlation Scatter Chart now displays the Quadratic Correlation trend line

in addition to the Linear trend line. In conjunction with this, a Determination

Matrix allows you to visualize how closely the various input and output paramet-

ers are coupled in a quadratic regression.

• Design of Experiments (DOE) capability has been enhanced:

– When switching DOE types, Design Points generated for the new DOE type

that were solved in a previous analysis will be shown as up to date. Only new

Design Points need to be submitted to the analysis system for solution.

– The Custom DOE Table can be in one of two modes: All Outputs Calculated,

or All Outputs Editable. The default mode for the table is All Outputs Calcu-

lated. All Outputs Editable allows you to enter values for any or all of the in-

puts and outputs in a row.



The Following New Features Provide Extended Design Exploration Capabilities in

the Workbench Environment:

The Following New Behavior is Seen when Working in

DesignXplorer Systems:

• When you make any of the following changes to an input parameter in the first

cell of the system (DOE or Parameters Correlation cell):

– enable or disable an input parameter

– change the nature of an input parameter from continuous to usability or

discrete, etc.

– add or remove a level for a discrete or usability parameter

– change the range definition of an input parameter

All generated data associated with the system that contains the modified para-

meter will be cleared. Note that for all actions listed above except for "enable

or disable an input parameter": If you change the DOE type to Custom, you can

retain Design Points that fall within the new ranges.

• Design Points can be imported to a Custom DOE Table from the Parameter Set,

or exported from the Parameter Set to a specific Custom DOE cell.

3.11. Engineering Data Workspace Release Notes


Previous Releases

The Engineering Data workspace at release 12.1 exhibits product behaviors that differ

from previous releases. These behavior changes are presented below.

• The material property Coefficient of Thermal Expansion will be converted to

Isotropic Secant Coefficient of Thermal Expansion.

Material Property Enhancements

The following material property enhancements have been made at release 12.1:

• Coefficient of Thermal Expansion now supports being defined as Instantaneous

or Secant. Also the ability to specify Isotropic or Orthotropic behavior has been

added.

• Anisotropic Elasticity can be defined through a lower matrix input.



Ease of Use Enhancements

When a material model has more than one independent variable it will be displayed

in a split table to allow for easier selection and viewing of data. For example, tabular

material data like S-N curves based on mean stresses will now be displayed in a split

table for better selection and viewing of data.

3.12. EKM Desktop

Release 12.1 of ANSYS EKM Desktop contains defect fixes and an enhancement to

the Reporting feature.

Report Generation Changes

The data used to generate Simulation Details reports in EKM Desktop 12.1 is now

saved in the repository. The report data is saved in a permanent folder called Saved

Reports. The path for this folder is /Repository/Saved Reports.

You continue to generate Simulation Details Reports just like you did in version 12.0.

The only change to report generation is that the report name now contains the name

of the file used to generate the data for the report. For example, if you generate a

report from 2dmesh.cas, the report name will be 2dmesh.cas Simulation De-tails Report.

Once the report is generated, the data is saved in a folder under Saved Reports that

has the same path as that of the source file. For example, if you generate a report

from /Repository/FLUENT/2dmesh.cas, the report will be saved in /Repository/Saved

Reports/FLUENT/2dmesh.cas Simulation Details Report.

Rerunning Reports

Once a report has been saved, you can run the report again by opening it from the

Saved Reports folder. You do this by either double clicking the report, opening the

report from the context menu, or selecting the report and clicking the Open button.

Comparing Report Contents

In EKM Desktop 12.1, you can now compare the content of multiple Simulation Details

Reports. To do this, you simply select one or more saved reports and generate a

comparison report. In the Report wizard, you can choose to compare all the content

of the selected reports, or simply compare the content differences.



Comparing Report Contents

3.13. ANSYS AQWA

Building on the introduction of the ANSYS Workbench type User Interface for ANSYS

AQWA in the previous release, the Hydrodynamic Diffraction analysis system has been

added to the Workbench Toolbox. The analysis system can be placed on the Project

Schematic, a geometry can be attached from another analysis system or through a

file, and the AQWA Editor can be started from the analysis system.


Previous Releases

The AQWAWB application is now only available as a system from the Workbench

toolbox and has been renamed “Hydrodynamic Diffraction (AQWA)”. If version

12.1 is installed on a machine that already has AQWA 12.0 installed, AQWAWB may

fail to import an external geometry. If access to AQWAWB is still required then version

12.0 should be re-installed after the 12.1 installation. AQWA databases (.aqdb files)

from the previous release can be imported into the Workbench environment.

The Following New Behavior is Seen in AQWA:

Hydrodynamic Diffraction (AQWA) [formerly named

AQWAWB]

New Hydrodynamic Diffraction System in Workbench – At the 12.0 release a

Workbench style interface was developed for AQWA called AQWAWB. This was a

standalone module that had the same look and feel of other Workbench products,

and could utilize geometries generated by DesignModeler. At 12.1 AQWAWB has

been fully incorporated as a system called Hydrodynamic Diffraction in ANSYS

Workbench, so is now available directly from the Project Schematic. This offers addi-

tional benefits, including direct linkage to ANSYS DesignModeler importing of external

CAD geometry, and facilitates the use of geometric parameterization. AQWAWB is

not available in this release and is replaced by the Hydrodynamic Diffraction system.

The following additional features have been incorporated into the Hydrodynamic

Diffraction system:

• Air gap visualization – Contour plotting of air gap values has been included as

an option in the Pressures and Motions results object.

• Additional stiffness matrix definition – An additional stiffness matrix may now

be defined for inclusion in the radiation/diffraction analysis.



• Frequency independent additional damping matrix definition – At release

12.0 only the diagonal terms for roll and pitch could be defined. This has now

been extended to allow the full 6x6 matrix to be input for frequency independent

additional damping.

• Frequency independent additional added mass matrix definition – The full

6x6 matrix for frequency independent added mass may now be defined.

• User specified metacentric heights – The hydrostatic stiffness in the hydro-

dynamic database can be modified to a user specified value creating additional

stiffness automatically. This is achieved by specifying the required GMX and GMY

(about the global X/Y axis).

• Automatic detection of submerged structures – If a structure has no elements

at or above the water line then this is now automatically detected and appropriate

action taken with the solution. This may be overridden if required.

• Optional program controlled frequency range – By default the program will

automatically generate equally spaced frequencies between a lower limit based

on the water depth and an upper limit based on the mesh density. The number

of frequencies can be specified by the user.



Hydrodynamic Diffraction (AQWA) [formerly named AQWAWB]


Chapter 4: ANSYS ASAS, ANSYS AQWA, FEMGV

This release of the ASAS and AQWA related products contains all capabilities from

previous releases plus many new features and enhancements. The following enhance-

ments are available in release 12.1. Please refer to the product specific documentation

for full details of the new features


Previous Releases

Release 12.1 includes several new features and enhancements that result in product

behaviors that differ from previous releases. These behavior changes are described

below:

• The AQWAWB application is now only available from the Workbench toolbox

and has been renamed “Hydrodynamic Diffraction (AQWA)”. If release 12.1

is installed on a machine that already has AQWA 12.0 installed, AQWAWB may

fail to import an external geometry. If access to AQWAWB is still required then

version 12.0 should be re-installed after the 12.1 installation. AQWA Databases

(.aqdb files) from the previous release can be imported into the Workbench en-

vironment.

• The ANSTOASAS and ANSTOAQWA commands and macros that may be utilized

from within ANSYS Mechanical produce external files that are now, by default,

deleted. The files can be retained by setting the Delete Unneeded Files option

to No in the Analysis Settings details (Output Controls, Analysis Data Management,

Delete Unneeded Files).

4.1. ANSYS ASAS

The Following New Features Provide Extended Capabilities

in ANSYS ASAS:

The following new features are available in release 12.1 of ANSYS ASAS:



• ISO19902 Code of Practice implemented – The code checking for structural

steel frames has been extended to include member, dented member, and joint

checking to ISO 19902.

• On line documentation – The documentation for the code checking module

BEAMST is now available from the ANSYS on-line help system.

• New GEN1 element – This element can be utilized to provide user defined

stiffness, damping and mass data, and enables fully coupled analyses with third

party solvers, such as FLEX5 for the modeling of wind turbine rotor blade dynam-

ics, via a shared memory dynamic link library.

4.2. ANSYS ASAS BEAMCHECK

The Following New Features are available in Release 12.1 of

ANSYS ASAS BEAMCHECK

ASAS Beamcheck is the version of the ASAS code checking module BEAMST that

permits processing of results from an ANSYS Mechanical or Mechanical APDL struc-

tural analysis. The following enhancements have been implemented at 12.1:

• ISO19902 Code of Practice implemented – The code checking for structural

steel frames has been extended to include member, dented member, and joint

checking to ISO 19902.

• On line documentation – The documentation for the code checking module

BEAMST is now available from the ANSYS on-line help system

4.3. ANSYS AQWA

The Following New Features Provide Extended Capabilities

in ANSYS AQWA:

The following new features are available in release 12.1 of ANSYS AQWA:

• Increased length of file path – The maximum total length of path + filename

has been increased to 256 characters. The maximum length of the individual file

name is still 32 characters (28 plus .DAT extension).

• Improvements in Cable Dynamics – The cable dynamics initial static solution

has been made significantly more accurate and robust and should no longer fail

with the message: CABDYN:STATIC SOLN FAILED TO CONVERGE LINE: nn.



• Multiple line breaks – It is now possible to use more than one LBRK card in an

AQWA-DRIFT/NAUT analysis. In addition you can specify a breaking tension as

well as a breaking time.

• Equilibrium position when un-converged – AQWA-LIBRIUM will now write the

structure positions and articulation reactions after the final iteration to the .EQP

file, even if the run did not converge. The same warning message as previously,

that the run has not converged, will be issued. This final position may then be

used as the starting position for a subsequent analysis.

• Increase in maximum number of elements – Recognizing that the amount of

memory in computers is increasing, the limits on the maximum number of ele-

ments and nodes have been raised by approximately 50%. The new limits are:

18000Overall maximum number of elements

12000Maximum number of diffracting elements

22000Maximum number of nodes

• AGS plot options now persistent – Selected plot options were often lost when

importing new models requiring them to be reset each time. Most plot options

are now persistent and will retain existing selections when a new model is im-

ported or updated.

• Change of node numbering in mesh generator – In previous versions of the

AGS, when the mesh generator was used to create an AQWA model the nodes

at each frame started with '01' at the keel. E.g. nodes on frame 7 would be

numbered from 701, nodes on frame 19 would be numbered from 1901. This

method limits the number of nodes around a frame to 100, which occasionally

caused a problem. Now that the limit on the number of elements has been raised

the numbering system has been changed, and now node numbering is continuous

for all frames.

Note that as of the 12.0 release, the Graphical Display Window in the AQWA GS can

now be re-sized using the conventional Windows buttons in the top right corner.

The Following New Behavior is Seen in AQWA:

Hydrodynamic Diffraction (AQWA) [formerly named

AQWAWB]

New Hydrodynamic Diffraction System in Workbench – At the 12.0 release a

Workbench style interface was developed for AQWA called AQWAWB. This was a



Hydrodynamic Diffraction (AQWA) [formerly named AQWAWB]

standalone module that had the same look and feel of other Workbench products,

and could utilize geometries generated by DesignModeler. At 12.1 AQWAWB has

been fully incorporated as a system in ANSYS Workbench called Hydrodynamic Dif-

fraction, so is now available directly from the Project Schematic. This offers additional

benefits, including direct linkage to ANSYS DesignModeler importing of external CAD

geometry, and facilitates the use of geometric parameterization. AQWAWB is not

available in this release and is replaced by the Hydrodynamic Diffraction system. The

following additional features have been incorporated into the Hydrodynamic Diffrac-

tion system:

• Air gap visualization – Contour plotting of air gap values has been included as

an option in the Pressures and Motions results object.

• Additional stiffness matrix definition – An additional stiffness matrix may now

be defined for inclusion in the radiation/diffraction analysis.

• Frequency independent additional damping matrix definition – At release

12.0 only the diagonal terms for roll and pitch could be defined. This has now

been extended to allow the full 6x6 matrix to be input for frequency independent

additional damping.

• Frequency independent additional added mass matrix definition – The full

6x6 matrix for frequency independent added mass may now be defined.

• User specified metacentric heights – The hydrostatic stiffness in the hydro-

dynamic database can be modified to a user specified value creating additional

stiffness automatically. This is achieved by specifying the required GMX and GMY

(about the global X/Y axis).

• Automatic detection of submerged structures – If a structure has no elements

at or above the water line then this is now automatically detected and appropriate

action taken with the solution. This may be overridden if required.

• Optional program controlled frequency range – By default the program will

automatically generate equally spaced frequencies between a lower limit based

on the water depth and an upper limit based on the mesh density. The number

of frequencies can be specified by the user.

4.4. FEMGV

No changes in the 12.1 release.



Chapter 5: AUTODYN

5.1. Introduction

This section introduces the new features available in ANSYS AUTODYN release 12.1.

Please also refer to the ANSYS Workbench release notes for new features relating to

the Workbench systems:

• AUTODYN

• Explicit Dynamics (ANSYS)

Full details of the new features are described in the “What’s New in version 12.1”

section of the AUTODYN on-line help system.

5.2. ANSYS AUTODYN Enhancements

5.2.1. Efficiency Improvements

The overall efficiency of serial and parallel simulations involving 3D unstructured Parts

has been improved at release 12.1. Observed speed-ups, on a number of different

models, range from 1.2 to >3.0. These speed-ups are a result of several enhancements:

• Timestep calculation optimization

• Material processing optimization for selected material models

• Contact search optimization

5.2.2. Bonded Connections With Line Bodies

Parts containing beam elements can now be included in bonded connections with

surface or volume bodies using the body interaction object.



5.2.3. Bonded Connections With DCR Contact Method

The discrete contact response contact method can now be used in models containing

bonded connections.

5.2.4. 2D Unstructured Volume Solvers

A new generation of 2D mesh based Lagrangian volume solvers is now available in

the AUTODYN component system. This includes quadrilateral and triangular volume

elements.

Note that the 2D capabilities in the Explicit Dynamics (ANSYS) system and the link

between the AUTODYN component system and Explicit Dynamics (ANSYS) and

Meshing systems currently have Beta status. This link may not be as stable or robust

as expected in a general release version.

5.2.5. 2D Unstructured Interaction

The new 2D unstructured solvers can be used in combination with Lagrange/Lagrange

Interactions and Euler/Lagrange interactions with the structured multi-material and

ideal gas Euler solvers. Erosion can be used in all cases.

5.2.6. 2D Rigid Materials

2D unstructured solid elements now can be filled with a rigid material to generate

rigid bodies. 2D unstructured parts filled with rigid material behave similar to 3D

unstructured parts filled with rigid material.

5.2.7. Parallel 3D Multi-Material Euler Coupled to Lagrange

3D Multi-material Parts can now be decomposed over multiple slave processes (tasks)

in parallel coupled Euler/Lagrange simulations. This feature will allow coupled parallel

simulations to be decomposed more efficiently and thus reduce overall simulation

run times.

Note that a multi-material Euler Part must be decomposed manually and to enhance

the efficiency of a coupled calculation it is advised to place the sub-domains of the

structure on the same processor as the Euler multi-material sub-domains located in

the same geometric space.


Chapter 5: AUTODYN

5.2.8. HP-MPI Message Passing for Supported Windows Plat-

forms

It is now possible to run models in parallel using the HP-MPI message passing software

on Windows platforms. This message passing tool is available to all AUTODYN cus-

tomers as part of the main installation of the ANSYS 12.1 software.

Note that the HP-MPI version of AUTODYN is currently only available in single precision.

It also cannot be used with user subroutines. In future releases HP-MPI is likely to be

the default/primary message passing tool for AUTODYN on Windows platforms.

5.3. Explicit Dynamics (ANSYS) System Enhancements

The following features are enhancements to the Explicit Dynamics (ANSYS) analysis

system in ANSYS Workbench.

5.3.1. Pre-Stress Initial Condition

For an Explicit Dynamics (ANSYS) system, the Initial Conditions folder now includes

a Pre-Stress object to control the transfer of data from an implicit static or transient

structural analysis to the explicit dynamics analysis. Transferrable data include the

displacements, or the more complete Material State (displacements, velocities, stresses,

strains).

5.3.2. Support for Cylindrical Coordinate Systems

Displacement and Velocity boundary conditions now support cylindrical coordinate

systems in the Explicit Dynamics (ANSYS) system. The y-component of the cylindrical

system defines the angular rotation or velocity of the scoped nodes/rigid bodies.

5.3.3. Hydrostatic Pressure Load

The hydrostatic pressure boundary condition is now supported in the Explicit Dynamics

(ANSYS) system.

5.3.4. Expressions for Pressure and Velocity Boundary Condi-

tions

Pressure and velocity boundary conditions can now be defined as continuous functions

of time in the Explicit Dynamics (ANSYS) environment. The value of the load/constraint



5.3.4. Expressions for Pressure and Velocity Boundary Conditions

is extracted directly from the defined expression for each time point during the sim-

ulation (no discretization or interpolation is used).

5.3.5. Bonded Connections with Line Bodies

Parts containing beam elements can now be included in bonded connections with

surface or volume bodies using the body interaction object.

5.3.6. Bonded Connections with DCR Contact Method

The discrete contact response contact method can now be used in models containing

bonded connections.

5.3.7. Analysis Settings

Double precision solver option

You now have the option to Solve Explicit Dynamics simulations using either the

single or double precision executables using the Precision option of the Solver Con-

trols.

5.3.8. Post Processing

Tracker result filtering

Explicit Dynamics analyses typically involve a large number of time points, sometimes

on the order of hundreds of thousands. The tracker results data tends to include high

frequency noise that can obscure slow rate phenomena in low speed applications. A

low-pass filtering option is now available that allows you to distinguish real trends

in the data, by removing the high frequency noise. This feature can be controlled

from the Details view of a Result Tracker object.


Chapter 5: AUTODYN

Chapter 6: ANSYS CFX

This section summarizes the new features and incompatibilities in ANSYS CFX and

CFD-Post Release 12.1. Information about the beta features and known limitations of

ANSYS CFX Release 12.1 and CFD-Post Release 12.1 can be found in the ANSYS CFX

online help under ANSYS CFX, Release 12.1 > ANSYS CFX Introduction > ANSYS CFX Re-

lease Notes for 12.1.

The new features and enhancements in Release 12.0 of ANSYS CFX and CFD-Post are

described in ANSYS CFX, Release 12.1 > ANSYS CFX Introduction > ANSYS CFX Release

Notes for 12.0.

6.1. New Features and Enhancements

6.2. Incompatibilities

6.3. Known Limitations


New features and enhancements to ANSYS CFX and CFD-Post introduced in Release

12.1 are highlighted in this section.

6.1.1. ANSYS CFX in ANSYS Workbench

Journaling and Scripting

Journaling is the capturing of ANSYS Workbench actions (creating a project, opening

a system, and so on) to a file. For ANSYS CFX applications, CCL and command actions

are embedded within ANSYS Workbench actions. Scripting refers to the processes of

editing and running a journal file in ANSYS Workbench. With scripting, you could, for

example, implement a prescribed workflow.

Linux Support

ANSYS Workbench is supported on Linux 32 and Linux 64 on Red Hat Enterprise Linux

4, Red Hat Enterprise Linux 5, and SUSE Linux Enterprise 10.



6.1.2. ANSYS CFX in General

Magnetohydrodynamics and Electromagnetics

Quasi-static MHD and E-MAG models (Beta features in Release 12.0) are now available.

The electric field can be either solved using the electric potential equation or specified

by the user. Similarly, the magnetic field can be either solved using the magnetic

vector potential equation (including an external magnetic field) or specified by the

user. Momentum and energy sources calculated by solving these equations are

automatically included in the hydrodynamics system through the Lorentz force and

Joule heating.

6.1.3. ANSYS CFX Documentation

You can find the documentation in PDF form directly from the Help menus of all

ANSYS CFX components on Microsoft Windows and on Linux systems.

6.1.4. ANSYS CFX-Pre

There are no new features in CFX-Pre for this release.

6.1.5. ANSYS CFX-Solver

There are no new features in CFX-Solver in this release.

6.1.6. ANSYS CFD-Post

There are no new features in CFD-Post in this release.


This sections highlights differences in the behavior between Release 12.0 and Release

12.1 of ANSYS CFX and CFD-Post.

6.2.1. CFX-Pre

Units of [s-1] have been accepted as valid by CFX-Pre, however this is in the process

of being deprecated. Occurrences of [s-1] units should be changed to [s^-1] units.



6.2.2. CFX-Solver Manager

6.2.2.1. Interpolation with Moving Mesh

If the CFX-Interpolator is used to interpolate initial values for a case with moving

mesh, when Continue History From is disabled (New Run mode), then the behavior

has changed in Release 12.1. Prior to Release 12.1, the same mesh check compared

the initial mesh in the Initial Values File to the mesh in the Solver Input File. If these

were the same then the mesh coordinates and displacements from the Initial Values

File were copied onto the Solver Input File, and so the run would start with the mesh

in the position from the Initial Values File, not in the position from the Solver Input

File. This is generally appropriate when the CFX-Interpolator is run in Run Continuation

mode (that is, Continue History From is enabled) but not usually appropriate in New

Run mode. In Release 12.1 and later, if the CFX-Interpolator is run in New Run mode,

then the same mesh check is performed between the final mesh in the Initial Values

File and the mesh in the Solver Input File, and the mesh displacements and the co-

ordinates are never copied. The behavior in Run Continuation mode is unchanged.

This change can be reverted to the behavior prior to Release 12.1 by setting the expert

parameter meshdisp interp option = 3 (only by changing CCL) which forces

the CFX-Interpolator to always use the initial mesh from the Initial Values File for the

same mesh check independent of the run mode. Additionally, setting meshdispinterp option = 2 forces the CFX-Interpolator to always use the final mesh

from the Initial Values File for the same mesh check.

In ANSYS CFX Release 12.0, when there was a large number of unmapped nodes,

some of the unmapped nodes were extrapolated from incorrect mapped nodes, res-

ulting in unphysical pressure/temperature fields. The interpolator now modifies the

tree-search algorithm in order to make it more robust (but less efficient). It is also

possible to supply the parameter 'Bounding Box Tolerance' for the interpolator

to attempt to remap the unmapped nodes onto nearest source elements.


The changes highlighted in this section are numerics improvements made for ANSYS

CFX that are believed to be generally helpful.

6.2.3.1. Multiphase

CFX-Solver now uses the user-specified contact area fraction for diffusion term as-

sembly on non-overlap GGI boundaries, rather than the local volume fractions.




An issue that could result in unphysical temperature fluctuations for Eulerian mul-

tiphase, multicomponent flow with heat transfer and Kinematic Diffusivity specified

for one or more components has been fixed.

The CFX-Solver no longer gives incorrect results when using the wall boiling model

with 1-1 CHT boundaries and thermal energy for vapor phase.

The CFX-Solver now converges when using the wall boiling model with GGI CHT, and

it gives the comparable results to 1-1 CHT when thermal energy is used for the vapor

phase.

The solver enforces a hard stop when using wall boiling model with CHT and an iso-

thermal vapor phase. See the previous two items.

6.2.3.2. GGI Interfaces

The logic for re-intersecting stationary interfaces in moving mesh cases has been re-

verted to CFX Release 11.0. Those interfaces are now always intersected if they are

attached to a moving domain. The necessary re-intersection was missing if there was

a subdomain mesh movement specified.

6.2.3.3. Particle Transport

A slightly wrong exponent in the Grace model has been corrected.

The Reynolds number limit in the Schiller-Naumann model has been adjusted in order

to guarantee a smooth transition of the drag coefficient between the viscous and

inertial regimes.

A check has been added that prevents coupling of particles with 'real gas' fluid

components.

6.2.3.4. Combustion, Radiation and Material Properties

The accuracy of the Residual Material Model has been improved for the case in which

residual material is mixing with fresh fuel. Under these conditions the improved

model avoids unphysical low temperatures.

In Release 12.0, if you did not specify a tabulation temperature range when using

the Redlich Kwong or Peng Robinson real gas models, the solver used an inconsistent

temperature range for Cp and Cv. This has now been fixed.



6.2.3.5. Turbulence

An issue with the scaling coefficient of the curvature correction of two equation tur-

bulence models has been fixed (note that EARSM was not affected). In the user inter-

face, you can specify a curvature correction coefficient (Cscale) that should allow

scaling of the built-in curvature correction function used for two equation models. If

there is zero physical curvature, then the curvature correction function is 1. However,

the Release 12.0 implementation would produce a curvature effect for values of

Cscale not equal to 1. This has been fixed by using a new formulation.

6.2.3.6. Boundary Conditions

At inlet or outlet boundaries with artificial walls, the hybrid velocity values are now

calculated as for free-slip walls (in contrast to no-slip walls). This significantly improves

accuracy when the flow direction is not normal to the boundary (for example, in a

rotating domain).

6.2.3.7. Miscellaneous

The face ordering of the mesh in the CFX Solver Input file or the Initial Values file

generated prior to Release 12.1 may not be the same as the face ordering in Release

12.1. The Interpolator is not able to detect any such differences in the face ordering.

If there is any change in the face ordering, you will see ERROR #001100279 hasoccurred in subroutine ErrAction. when running the Partitioner. As a

workaround, select Use Mesh From Initial Values to continue the simulation and

avoid potential failure in the Partitioner or the CFX-Solver.

Issues with the Algebraic Slip Model (ASM) that could lead to unphysical temperature

fluctuations have been fixed.

The minVal and maxVal callbacks on boundaries now use conservative values,

which resolves an inconsistency with areaAve and massFlowAve.

Some imposed solid motion velocity fields might not be conservative, causing over-

shoots and undershoots in the temperature field. This fix turns on the mass imbalance

correction by default for solid motion problems. The side effect is that the CFX-Solver

is now more sensitive to timestep size and sometimes a smaller timestep is required.

To revert to the Release 12.0 behavior, set the logical expert parameter 'solid mo-tion aprmas = FALSE'

In Release 12.0, integration point mass flows written to the CFX-Solver Results file

(for CFD-Post) and used internally for call-back functions (such as massflow) could




be slightly wrong when solved in parallel. This has been corrected by increasing the

overlap of parallel partitions.

6.2.4. CFD-Post

This section describes procedural changes (actions that have to be done differently

in this release to get an outcome available in previous releases) as well as support

changes (functionality that is no longer supported) in Release 12.1 of CFD-Post.

File Path Syntax

When resuming a project that uses ANSYS FLUENT One-Way FSI, you cannot import

previously defined loads as the syntax for the file path has changed. The Release 12.0

syntax is:

/DATA READER/CASE:Case FFF 1 00010.dat/BOUNDARY:wallfluid

while the Release 12.1 syntax is:

/DATA READER/CASE:Case FFF 1 00010/BOUNDARY:wallfluid

Command Syntax for Objects

In Release 11.0 the syntax for commands that return results file objects was direct.

For example:

getChildren("", "BOUNDARY");

CCL changes in Release 12.0 and Release 12.1 to support multi-file operations place

file-dependent objects (such as BOUNDARY) in a /DATA READER/CASE:<casename> parent. Thus, the new syntax is:

getChildren("/DATA READER/CASE:<case name>", "BOUNDARY");


For a list of known limitations in Release 12.1 of ANSYS CFX and CFD-Post, see ANSYS

CFX, Release 12.1 > ANSYS CFX Introduction > ANSYS CFX Release Notes for 12.1 > Known

Limitations.



Chapter 7: ANSYS TurboGrid

This section summarizes the incompatibilities in ANSYS TurboGrid Release 12.1. In-

formation about the beta features and known limitations of ANSYS TurboGrid Release

12.1 can be found in the ANSYS TurboGrid online help under ANSYS TurboGrid, Release

12.1 > ANSYS TurboGrid Introduction > ANSYS TurboGrid Release Notes for 12.1.

The release notes for the remainder of TurboSystem are given at “ANSYS, Inc. Release

Notes > ANSYS Workbench > TurboSystem Release Notes (p. 24)”.

Incompatibilities

This section highlights differences in behavior between Release 12.0 and Release 12.1.

• The Enable Hub Tip and Enable Shroud Tip settings were removed from the

graphical user interface (the object editor for a given blade of a blade set). These

settings controlled the application of the hub tip and shroud tip to a given blade

of a blade set. If you require independent control of the application of a hub tip

or shroud tip to a given blade of a blade set, you may still edit the CCL for that

blade (for example, by using the Command Editor dialog box), but doing so

may produce an invalid mesh near the tip of any blade that does not have tip

clearance.




Chapter 8: ANSYS ICEM CFD

8.1. Highlights of ANSYS ICEM CFD 12.1

Release 12.1 comprises improved implementation of ANSYS ICEM CFD meshing

technology as a standalone application and within the ANSYS Workbench based

Meshing application. The improvements in the ANSYS Meshing application are de-

scribed in the ANSYS Workbench Meshing Application release notes.

8.2. Key New Features/Improvements

ANSYS ICEM CFD 12.1 includes the following new features and improvements:

8.2.1.Workbench Readers

8.2.2. Interface Improvements

8.2.3. Linux Support

8.2.4.Tetra

8.2.5. Prism

8.2.6. Hexa

8.2.7. Multi-zone

8.2.8. BF-Cart

8.2.9. Mesh Editing

8.2.10. Output

8.2.11. General

8.2.1. Workbench Readers

• Added ability to open ANSYS ICEM CFD project files from the Workbench project

file.

– Includes scripting command.

• Added ability to import Workbench mesh or geometry files by selecting the

Workbench project file.

• Improved handling of named selections, subsets, etc.

• Improved handling of multi-dimension parts.



– Important for baffle surfaces, etc.

• Improved file transfer from ANSYS ICEM CFD to FE Modeler as a way to get the

mesh into ANSYS Workbench.

• Updated ACIS reader to ACIS 20.

• Updated Parasolid reader to Parasolid 21.0.

8.2.2. Interface Improvements

• Ability to save views to the Project file.

• Improved “Auto Simplify” display settings.

• Improved “Color by Quality” display contrast for volume elements.

• Improved drag and drop for parts and assemblies in the model tree.

• Improved selection for deletion.

– Faster selection for “all entities”.

– Improved part by part selection.

– Solved selection related defects.

• Added “Gravity” force to the tree widget.

8.2.3. Linux Support

• Added Workbench Readers for Linux.

• Added Rhino3D support (import/export) for Linux.

• Support for Exodus II mesh output on Linux 64.

• Fixes for Linux-only defects.

– Including the occasional segmentation error with pre-mesh on Linux 64.

8.2.4. Tetra

• Optimized in-process memory requirements.

– Same mesh with less memory.

• Increased maximum number of supported nodes to 231

.

• Tetra with “part by part” option to store mesh with incremental file names.

• Improved TGrid hookup.

– AF (advancing front) option for Delaunay mesh method.



– Latest TGrid Library (TGlib).

– Works with all Delaunay controls (density, etc.).

8.2.5. Prism

• Improved stability.

• More consistent shell orientation.

– Important for bocos in some solvers (CFX).

– Including for prism quads on internal baffles.

• Added wb-exponential growth law.

• Ability to combine floating prism heights with set prism heights.

– Also improved algorithm, added “transition ratio” control and improved de-

faults for smoother transitions.

• “Auto Reduction” now auto-redistributes.

• Stair-step option can be disabled.

• Restored use of 2D Prism (Blayer2D).

• Fixed surface orientation error defect.

8.2.6. Hexa

• Improved support for very large Hexa domain files on Win64.

• Added “Visible” option for Reset associations.

• Ability to copy edge bunching from the selected reference edge to specific edges.

– When used with scripting, the option lists the from_edge and the to_edge.

• Added option to convert unstructured Hexas with collapsed edges into pairs of

pyramids (more blocking flexibility).

• Added display option to toggle between all faces and just boundary faces (easier

selection).

• Inherited distribution for new Hexa splits.

• Ability to link spacing during the “Match Edges” command.

• Improved re-scaling O-grid.

• Improved Query Edge/Info (most import info is last).



8.2.6. Hexa

8.2.7. Multi-zone

• Improved Sweep functionality.

– Including 2D to 3D rotate with axis elements

• Continued improvements to block type conversion.

• Better selection handling and display.

• Improved integration of TGrid Tetra fill.

• Improved parameter settings and defaults.

• Improved block/face/mesh type conversion.

• Prism quality now included in pre-mesh histogram.

• Added parallel smoothing for Multi-zone Hexa.

8.2.8. BF-Cart

• Added Key Point Blocking.

– Creates Cartesian planes based on key points in the model.

– Tolerance specifies the minimum distance between adjacent grid lines.

• Added progress bar.

• Added body by body inflation

8.2.9. Mesh Editing

• Improved Redistribute Prism.

– Works with imported mesh.

– Works with Hexas.

• Increased maximum importable/editable model size to 231

.

• Added Mesh Expansion criterion for CFX.

– Node centered CFX formulation.

• Improved histogram min/max range defaults.

• Edit Mesh > Refine selected.

– Select by parts.

• Smoothing to increase min edge length.

– Laplace-based scheme tries to equalize edge lengths locally.



• Laplace Volume Smoothing.

• Notification when the smoother is no longer effective (residuals).

8.2.10. Output

• Added output to:

CGNS 3.0 (ADF and HDF5)

KIVA-4 (unstructured)

• Improved/updated output to:

FLUENT

ANSYS

Popinda

Precise

Fire V8

USM3d

WindMaster

FlowCart

• Restored functionality to select specific domains for export to multi-block solvers.

• Licensing issues sorted out for Exodus, IDEAS, Radioss, AUTODYN.

8.2.11. General

• Tetin files are cleaned on save.

– Improved Edit > Shrink tetin file option.

• The define_family parameters are saved/read with the Tetin file

• Fixed Undo for several commands including after split internal walls.

• Improved the Help content and browser.

• Improved licensing checks to be faster through the interconnect.

• Improved licensing checks for FEA output formats.

• Support for import of 2D Plot3D files.


The following incompatibilities with prior releases of ANSYS ICEM CFD are known to

exist at Release 12.1:




Tetin File Format Change

There are some differences in the Tetin file format at Release 12.1, particularly with

respect to some of the mesh parameter settings.

ANSYS ICEM CFD 12.1 can read all older native file formats.

To make sure an R12.1 Tetin file can be read back into an older version of ANSYS

ICEM CFD, use the File > Save Geometry As Version... > Version 10 File option.

The Version 10 file can be read into any later ANSYS ICEM CFD version, including 11.0

and 12.0.

If you do not have version 12.1 available, the changes can also be made by removing

certain lines using a text editor. Please contact technical support for assistance.

8.4. Documentation

All documentation for ANSYS ICEM CFD 12.1 is accessible using the Help menu.

Please contact us if you would like to attend training. Please visit the ANSYS ICEM

CFD website for more information.

8.4.1.Tutorials

8.4.2. Demo Room

8.4.1. Tutorials

The tutorials, input files, as well as the solved tutorials are available at http://www.an-

sys.com/tutorials.

8.4.2. Demo Room

Additional demos can be found at the ANSYS Demo Room.



http://www.ansys.com/products/icemcfd.asp

http://www.ansys.com/products/icemcfd.asp

http://www.ansys.com/tutorials/

http://www.ansys.com/tutorials/

http://www.ansys.com/demoroom/

Chapter 9: ANSYS CFD-Post

This chapter summarizes the new features and incompatibilities in CFD-Post Release

12.1. Information about the beta features and known limitations of CFD-Post Release

12.1 can be found in the ANSYS CFX online help under ANSYS CFX, Release 12.1 >

ANSYS CFX Introduction > ANSYS CFX Release Notes for 12.1.


There are no new features in CFD-Post in this release.


This section describes procedural changes (actions that have to be done differently

in this release to get an outcome available in previous releases) as well as support

changes (functionality that is no longer supported) in Release 12.1 of CFD-Post.

File Path Syntax

When resuming a project that uses ANSYS FLUENT One-Way FSI, you cannot import

previously defined loads as the syntax for the file path has changed. The Release 12.0

syntax is:

/DATA READER/CASE:Case FFF 1 00010.dat/BOUNDARY:wallfluid

while the Release 12.1 syntax is:

/DATA READER/CASE:Case FFF 1 00010/BOUNDARY:wallfluid

Command Syntax for Objects

In Release 11.0 the syntax for commands that return results file objects was direct.

For example:

getChildren("", "BOUNDARY");

CCL changes in Release 12.0 and Release 12.1 to support multi-file operations place

file-dependent objects (such as BOUNDARY) in a /DATA READER/CASE:<casename> parent. Thus, the new syntax is:



getChildren("/DATA READER/CASE:<case name>", "BOUNDARY");


For a list of known limitations in Release 12.1 of CFD-Post, see ANSYS CFX, Release

12.1 > ANSYS CFX Introduction > ANSYS CFX Release Notes for 12.1 > Known Limitations.


Chapter 9: ANSYS CFD-Post

Chapter 10: ANSYS FLUENT

10.1. Introduction

ANSYS FLUENT 12.1 contains primarily bug fixes and a limited number of new features.

The sections that follow provide information on new features, supported platforms,

limitations that no longer apply, and updates that affect code behavior. Information

about the known limitations of FLUENT 12.1 can be found in the online documentation.

The documentation can be found by selecting the More Documentation... item from

the FLUENT Help menu.

If you would like to access a PDF file of the ANSYS Release 12.0 Release Notes, click

here.

Note

FLUENT 12.1 will now be installed under ANSYS Inc/v121/fluent on

Windows and ansys_inc/v121/fluent on Linux and Unix platforms.

10.1.1. Installation Procedures for FLUENT (Windows and

UNIX/Linux Platforms)

Instructions for installing FLUENT are included in the ANSYS Installation documentation.

This documentation is included in the ANSYS Documentation package. Please view

the FLUENT Product Page on the User Services Center (www.fluentusers.com) for

more information.

If you have used FLUENT Launcher for FLUENT 6.3 or FLUENT 12, you will need to

reset the default values in FLUENT Launcher as described in the documentation for

using FLUENT in Workbench, available from the ANSYS FLUENT 12.0 Documentation

page.

10.2. New Features

New features available in FLUENT 12.1 are listed below.



../../ai_rn_2647.pdf

../../ai_rn_2647.pdf

http://www.fluentusers.com

http://www.fluentusers.com/fluent12/doc/ori/v120/fluent/fluent12.0/help/index.htm

http://www.fluentusers.com/fluent12/doc/ori/v120/fluent/fluent12.0/help/index.htm

• Licensing

– Support for ANSYS HPC “pack” licensing

– Support for ANSYS physics-neutral licensing

• Mesh

– Ability to append large meshes in serial with low memory overhead to create

a single mesh for the parallel solver

• Graphical User Interface

– Ability to launch ANSYS FLUENT 12.1 on Linux from Windows

10.3. Supported Platforms

Platform/OS levels that are supported in the current release are posted on the User

Services Center (www.fluentusers.com).


Information about the known limitations of FLUENT 12.1 can be found in the online

documentation. The documentation can be found by selecting the More Document-

ation... item from the FLUENT Help menu.

10.5. Limitations That No Longer Apply in FLUENT 12.1

• The NOx pollutant models are no longer separately license managed

10.6. Updates Affecting Code Behavior

• PLOT3D results file import is no longer supported. This feature has been removed

from the interface.

• The scaling of the wave number in the spectral synthesizer algorithm has been

changed for both the inlet LES boundary condition and in the algorithm for

patching a RANS solution.

• The Help menu items User Services Center... and Online Technical Support...

have been removed and replaced with the Online Technical Resources... menu

item, pointing to the ANSYS Customer Portal.

• The 2-D frictional viscosity law using the Schaeffer formulation has changed, af-

fecting wall shear stress values in Eulerian granular cases with the frictional vis-

cosity option enabled.


Chapter 10: ANSYS FLUENT

http://www.fluentusers.com

• Node values are now used in computing custom field function reports on surfaces

and will yield improved results.

• Changes in the symmetric drag law give different results for mass flow rates. This

will primarily affect multi-fluid VOF cases.



10.6. Updates Affecting Code Behavior


Documents

ANSYS, Inc. Release Notes - sharcnet.ca · ANSYS, Inc. Release Notes ANSYS, Inc. Release 12.1 Southpointe November 2009 275 Technology Drive 002825 Canonsburg, PA 15317 ANSYS, Inc