Turbo grid với ansys

7/26/2019 Turbo grid vi ansys

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ANSYS TurboGrid Tutorials

Release 14.0ANSYS, Inc.

November 2011Southpointe

275 Technology DriveCanonsburg, PA 15317 ANSYS, Inc. iscertified to ISO

9001:[email protected]

http://www.ansys.com

(T ) 724-746-3304

(F) 724-514-9494


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Copyright and Trademark Information

2011 SAS IP, Inc. All rights reserved. Unauthorized use, distribution or duplication is prohibited.

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 CONFID-

ENTIAL 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 concerning non-disclosure, copying, length and nature of use, compliance with exporting

laws, warranties, 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.
http://ai_ginfo.pdf/http://ai_ginfo.pdf/


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Table of Contents

1. Introduction to the ANSYS TurboGrid Tutorials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1. Preparing a Working Directory .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2. Setting the Working Directory and Starting ANSYS TurboGrid .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3. Changing the Display Colors ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.4. Editor Buttons .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.5. Using Help .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22. Rotor 37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1. Overview of the Mesh Creation Process ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2. Before You Begin .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3. Starting ANSYS TurboGrid .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.4. Defining the Geometry .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.5. Defining the Topology .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.6. Reviewing the Mesh Data Settings .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.7. Reviewing the Mesh Quality on the Hub and Shroud Tip Layers ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.8. Adding Intermediate Layers ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.9. Generating the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10. Analyzing the Coarse Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.1. Analyzing the Coarse Mesh Quality ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.10.2. Looking at Mesh Data Values .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.10.3. Visualizing the Hub-to-Shroud Element Distribution .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.11. Increasing the Mesh Density ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.12. Regenerating the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.13. Analyzing the Fine Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.13.1. Analyzing the Fine Mesh Quality ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.13.2.Visualizing the Hub-to-Shroud Element Distribution in the Fine Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.13.3. Observing the Shroud Tip Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.13.4. Examining the Mesh Qualitatively ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.13.5. Creating a Legend .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.14. Saving the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.15. Saving the State (Optional) ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3. Steam Stator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.1. Before You Begin .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.2. Starting ANSYS TurboGrid .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.3. Defining the Geometry .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.3.1. Loading the Curves .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.3.2. Modifying the Curve Type .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.4. Defining the Topology .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.5. Reviewing the Mesh Data Settings .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.6. Reviewing the Mesh Quality on the Hub and Shroud Layers ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.6.1. Modifying the Hub and Shroud Layers ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.7. Generating the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283.8. Analyzing the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.8.1. Examining the Mesh Qualitatively ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.8.1.1. Editing a Turbo Surface .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.8.1.2. Creating a Legend .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.9. Saving the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30


4. Radial Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.1. Before You Begin .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32


iiRelease 14.0 - SAS IP, Inc. All rights reserved. - Contains proprietary and confidential informationof ANSYS, Inc. and its subsidiaries and affiliates.


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4.3.1. Defining the Machine Data .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.3.2. Defining the Hub .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.3.3. Defining the Shroud .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.3.4. Defining the Blade .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34




4.7. Analyzing the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.8. Saving the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4.9. Saving the State (Optional) ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5. Axial Fan Using ATM Optimized Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.1. Before You Begin .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40



5.4. Using the ATM Feature .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.4.1. Defining the Topology .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.4.2. Changing the Mesh Size .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.4.3. Using the Locking Feature .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

5.4.4.The Y+ Functionality ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455.4.5. Using Local Mesh Refinement .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46


5.6. Adding Inlet and Outlet Domains .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

5.7. Analyzing the New Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

5.8. Saving the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

5.9. Saving the State (Optional) ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

6. Axial Fan Using Traditional Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

6.1. Before You Begin .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50




6.5. Reviewing the Mesh Data Settings .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 536.6. Reviewing the Mesh Quality on the Hub and Shroud Tip Layers ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

6.6.1. Modifying the Shroud Tip Layer ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54



6.9. Adding Inlet and Outlet Domains .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.10. Regenerating the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.11. Analyzing the New Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.12. Saving the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57


7. Splitter Blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

7.1. Before You Begin .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 607.2. Starting ANSYS TurboGrid .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60



7.5. Reviewing the Topology Settings .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61



7.7.1. Modifying the Hub Layer ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62



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7.10. Saving the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64


8. Tandem Vane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

8.1. Before You Begin .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66




8.5. Reviewing the Topology Settings .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68



8.7.1. Modifying the Hub Layer ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

8.7.2. Modifying the Shroud Tip Layer ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

8.8. Increasing the Mesh Density ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

8.9. Further Modifying the Hub Layer ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

8.10. Generating the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

8.11. Saving the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74


9. Batch Mode Studies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

9.1. Before You Begin .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

9.2. Part 1: Parametric Study .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 779.2.1. Starting ANSYS TurboGrid .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

9.2.2. Defining the Geometry .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

9.2.3. Creating the Topology and Modifying the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

9.2.4. Creating the Session File ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

9.2.5. Running the Session File ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

9.3. Part 2: Grid Refinement .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

9.3.1. Starting ANSYS TurboGrid .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

9.3.2. Defining the Geometry and Topology .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

9.3.3. Creating the Session File ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

9.3.4. Running the Session File ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

10. Deformed Turbine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

10.1. Before You Begin .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8610.2. Starting ANSYS TurboGrid .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

10.3. Mesh for the Deformed Blade Group .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

10.3.1. Defining the Geometry for the Deformed Blade Group .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

10.3.1.1. Loading an Undeformed Blade .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

10.3.1.2. Moving the Periodic Surfaces .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

10.3.1.3. Inserting Two More Blades .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

10.3.1.4. Adding a Shroud Tip .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

10.3.1.5. Adjusting the Inlet and Outlet Points ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

10.3.1.6. Saving the Periodic/Interface Surfaces .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

10.3.1.7. Saving the Inlet and Outlet Locations .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

10.3.2. Defining the Topology for the Deformed Blade Group .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9310.3.3. Reviewing the Mesh Data Settings for the Deformed Blade Group .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

10.3.4. Reviewing the Mesh Quality on the Hub and Shroud Tip Layers of the Deformed Blade

Group .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

10.3.4.1. Modifying the Hub Layer ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

10.3.4.2. Modifying the Shroud Tip Layer ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

10.3.5. Increasing the Mesh Density for the Deformed Blade Group .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

10.3.6. Revisiting the Mesh Quality on the Hub and Shroud Tip Layers of the Deformed Blade

Group .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

10.3.7. Generating the Mesh for the Deformed Blade Group .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

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10.3.8. Analyzing the Mesh for the Deformed Blade Group .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

10.3.9. Saving the Mesh for the Deformed Blade Group .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

10.3.10. Saving the State for the Deformed Blade Group (Optional) ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

10.4. Mesh for an Undeformed Blade .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

10.4.1. Starting a New Case .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

10.4.2. Defining the Geometry for the Undeformed Blade .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

10.4.2.1. Adding a Shroud Tip .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

10.4.3. Defining the Topology for the Undeformed Blade .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

10.4.4. Reviewing the Mesh Data Settings for the Undeformed Blade .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

10.4.5. Reviewing the Mesh Quality on the Hub and Shroud Tip Layers of the Undeformed Blade .... 105

10.4.5.1. Modifying the Hub Layer ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

10.4.6. Increasing the Mesh Density for the Undeformed Blade .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

10.4.7. Revisiting the Mesh Quality on the Hub and Shroud Tip Layers of the Undeformed Blade ..... 107

10.4.8. Generating the Mesh for the Undeformed Blade .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

10.4.9. Analyzing the Mesh for the Undeformed Blade .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

10.4.10. Saving the Mesh for the Undeformed Blade .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

10.4.11. Saving the State for the Undeformed Blade (Optional) ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

10.5. Summary .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

10.6. Further Exercise .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

11. Francis Turbine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10911.1. Before You Begin .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

11.2. Starting ANSYS TurboGrid .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

11.3. Defining the Geometry .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

11.3.1. Adjusting the Outlet Points ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

11.4. Defining the Topology .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

11.5. Reviewing the Mesh Quality on the Hub and Shroud Layers ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

11.5.1. Modifying the Hub Layer ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

11.5.2. Modifying the Shroud Layer ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

11.6. Specifying Mesh Data Settings .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

11.7. Generating the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

11.8. Analyzing the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

11.9. Saving the Mesh .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11911.10. Saving the State (Optional) ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Index .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

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Chapter 1: Introduction to the ANSYS TurboGrid Tutorials

The ANSYS TurboGrid tutorials are designed to introduce general mesh-generation techniques used inANSYS TurboGrid.

Note

These tutorials assume that you are using ANSYS TurboGrid in stand-alone mode. If you

would like to attempt running one of these tutorials in ANSYS Workbench, you should first

be familiar with ANSYS Workbench and review the documentation in ANSYS TurboGrid in

ANSYS Workbench in the TurboGrid Introduction.

You should review the following topics before attempting to start a tutorial for the first time:

1.1. Preparing a Working Directory1.2. Setting the Working Directory and Starting ANSYS TurboGrid

1.3. Changing the Display Colors

1.4. Editor Buttons

1.5. Using Help

1.1. Preparing a Working Directory

ANSYS TurboGrid uses a working directory as the default location for loading and saving files for a

particular session or project. Before you run a tutorial, you must create a working directory and copy

in the files that are listed near the top of the tutorial. This practice will prevent you from making acci-

dental changes to any of the files that came with your installation. The files are available from yourANSYS TurboGrid installation and from the ANSYS Customer Portal.

The tutorial input files are available in your ANSYS TurboGrid installation in /examples,

where is the installation directory for ANSYS TurboGrid.

The tutorial input files are available from the ANSYS Customer Portal (www.ansys.com/customerportal/)

by using the Download Wizard to download the ANSYS_Fluid_Dynamics_Tutorial_Inputs.zip

file. Once downloaded and expanded, the tutorial input files can be found in: \v140\Tutori-

al_Inputs\Fluid_Dynamics\TurboGrid\examples, where is the directory where the

downloaded .zip file was expanded.

1.2. Setting the Working Directory and Starting ANSYS TurboGridBefore you start ANSYS TurboGrid, set the working directory.

1. Start the ANSYS TurboGrid Launcher.

For details, see Starting the ANSYS TurboGrid Launcher in the TurboGrid Introduction.

2. Select a working directory.

3. Click the TurboGrid 14.0button.

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1.3. Changing the Display Colors

If viewing objects in ANSYS TurboGrid becomes difficult due to contrast with the background, the colors

can be altered for improved viewing. You can access the color options by going through the following

steps:

1. Select Edit> Options.

The Optionsdialog box appears.

2. Adjust the color settings under TurboGrid> Viewer.

3. Click OK.

1.4. Editor Buttons

The ANSYS TurboGrid interface uses editors to enter the data required to create a mesh. The editors

have standard buttons, which are described next:

Applyapplies the information contained within all the tabs of an editor.

OKis the same as Apply, except that the editor automatically closes. Canceland Closeboth close the editor without applying or saving any changes.

Reset returns the settings for the object to those stored in the database for all the tabs. The settings

are stored in the database each time the Applybutton is clicked.

Defaults restores the system default settings for all the tabs of the edited object.

1.5. Using Help

To invoke the help browser, select Help> Contents.

You may also try using context-sensitive help. Context-sensitive help is provided for many of the object

editors and other parts of the interface. To invoke the context-sensitive help for a particular editor orother feature, ensure that the feature is active, place the mouse pointer over it, then press F1. Not every

area of the interface supports context-sensitive help. If context-sensitive help is not available for the

feature of interest, select Help> Contentsand try using the search or index features in the help browser.

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Chapter 2: Rotor 37

This tutorial includes:2.1. Overview of the Mesh Creation Process

2.2. Before You Begin

2.3. Starting ANSYS TurboGrid

2.4. Defining the Geometry

2.5. Defining the Topology

2.6. Reviewing the Mesh Data Settings

2.7. Reviewing the Mesh Quality on the Hub and Shroud Tip Layers

2.8. Adding Intermediate Layers

2.9. Generating the Mesh

2.10. Analyzing the Coarse Mesh

2.11. Increasing the Mesh Density

2.12. Regenerating the Mesh

2.13. Analyzing the Fine Mesh

2.14. Saving the Mesh

2.15. Saving the State (Optional)

This tutorial demonstrates the basic workflow for generating a CFD mesh using ANSYS TurboGrid. As

you work through this tutorial, you will create a mesh for a blade passage of an axial compressor blade

row. A typical blade passage is shown by the black outline in the figure below.



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The blade row contains 36 blades that revolve about the negative Z-axis. A clearance gap exists between

the blades and the shroud, with a width of 2.5% of the total span. Within the blade passage, the max-

imum diameter of the shroud is approximately 51 cm.

After creating the mesh with the default mesh density, you will check the mesh quality. You will then

increase the mesh density and regenerate the mesh. Finally, you will save the mesh in a format that

can be used by ANSYS CFX in a CFD simulation.

2.1. Overview of the Mesh Creation Process

Before ANSYS TurboGrid can create a mesh, you must provide it with several pieces of information.

Such information includes the location of the geometry files (hub, shroud, and blades), the mesh topology

type, and the distribution of mesh nodes. All of the data that you provide is stored in a set of data objects

known as CCL objects. After you have specified the CCL objects appropriately, you can issue a command

for ANSYS TurboGrid to generate a mesh.

The ANSYS TurboGrid user interface organizes the CCL objects in a tree view known as the object selector.

You can use the object selector to select and edit the CCL objects; the objects are listed from top to

bottom in the standard order for creating a mesh. The user interface also has a toolbar for selecting

and editing the CCL objects; the icons are arranged from left to right in the standard order for creating

a mesh.


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Regardless of whether you use the object selector or the toolbar, you should generally follow this se-

quence when creating a mesh:

1. Define the geometry by loading files and changing settings as required.

2. Define the topology by choosing a topology type and optionally changing other topology settings.

3. Optionally modify the Mesh Data settings that govern the number and the distribution of nodes in

various parts of the mesh.

If you plan to make a fine (high-resolution) mesh, you can optionally set the mesh density at a

later time in order to minimize processing time while establishing the topology. Keep in mind

that changing the mesh density can affect the mesh quality.

4. Improve the topology on the hub and shroud layers as required.

5. Optionally add intermediate 2D layers that guide the 3D topology and mesh. If you do not add layer

at this point, they will be added as required when you generate the mesh. Adding them early gives

you a chance to check and adjust the 2D mesh quality on the intermediate layers before generating

the full 3D mesh.

6. Issue the command to generate a mesh.

7. Check the mesh quality. As required, adjust the topology type and distribution, and Mesh Data set-tings. If you make changes, go back to the previous step.

8. Save the mesh to a file.

2.2. Before You Begin

Before you begin this tutorial, review the topics in Introduction to the ANSYS TurboGrid Tutorials (p. 1).


1. Prepare the working directory using the files in the examples/rotor37directory.

For details, see Preparing a Working Directory (p. 1).

2. Set the working directory and start ANSYS TurboGrid.

For details, see Setting the Working Directory and Starting ANSYS TurboGrid (p. 1).


The provided geometry files, which consist of a BladeGen.inffile plus three curve files, were created

using BladeGen. To load the information contained in those files, you will load the BladeGen.inf

file. ANSYS TurboGrid uses this file to set the axis of rotation, the number of blades, and a length unit

that characterizes the scale of the machine. It also uses this file to identify the curve files which it then

loads to define the curvature of the hub, shroud, and a single blade. The geometric data from the input

files is processed to generate a geometric representation, an outline of which appears in the viewer.

After the geometry has been generated, you are invited to browse through the objects created under

the Geometryobject in the object selector.

Initially, the blades extend from the hub to the shroud. After inspecting the geometry, you will create

the required gap between the blade and the shroud.

Load the BladeGen.inf file:


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1. Click File> Load BladeGen.

2. Open BladeGen.inf from the working directory.

The progress bar at the bottom right of the screen shows the geometry generation progress. After

the geometry has been generated, you can see the hub, shroud, and blade for one passage. Along

the blade, you can see the leading and trailing edge curves (green and red lines, respectively).

An outline drawing (the Outlineobject) traces the 3D space that is available for meshing; the

latter consists of an inlet domain, passage, and outlet domain. In this tutorial, you will generatea mesh for the passage only.

Note

It is possible to adjust the upstream and downstream extents of the hub and shroud

surfaces (by changing the Inletand Outletgeometry objects). It is also possible

to create an extended mesh that includes the inlet and outlet domains (by editing the

Mesh Data settings).

Examine the geometry:

1. To understand the correlation between the geometry objects listed in the object selector and the

locations in the geometry, toggle the visibility check box next to each object in the object selector

and observe the change in the viewer. In order to avoid cluttering the view, ensure that only the Hub,

Shroud, Blade 1, and Outlineobjects have visibility turned on before continuing to the next

step.

2. Open Geometry> Machine Data from the object selector by double-clicking Machine Data in

the object selector, or by right-clicking Machine Dataand selecting Edit from the shortcut menu

that appears.

Here you can see basic information about the geometry. Note that the units specified for Base

Units represent the scale of the geometry being meshed; these units are not used for importinggeometric data nor do they govern the units written to a mesh file; they are used for the internal

representation of the geometry to minimize computer round-off errors.

3. Open Geometry> Hub.

Here you can see information about which file was used for hub data and how the file was inter-

preted. Similar information can be seen by opening the Shroudand Blade 1objects. Note

that, for the Huband Shroudobjects, the Curve Typeparameter is set to Piece-wise linear;

this is a result of loading a BladeGen.inf file.

4. Click Display all blade instances to obtain a view of the entire geometry.

5. Click Display single blade instance to show a single blade instance once again.

To complete the geometry, create a small gap between the blade and the shroud. The blade should

be shortened to 97.5% of its original span because the gap width, as specified in the problem description,

is 2.5% of the total span.

1. Open Geometry> Blade Set> Shroud Tip.

2. Set Tip Option to Constant Span.

3. Set Span to 0.975.


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4. Click Apply.

The names of the objects in the Geometrybranch of the object selector are shown in black non-italic

text, indicating that the Geometry objects are all defined. This completes the geometry definition.


Now that the geometry is defined, the next step is to create the topology that guides the mesh.

1. Open Topology Set.

2. Set Topology Definition> Placement to Traditional with Control Points.

This provides access to the legacy topology methods. The other option, ATM Optimized, provides

access to the newest topology method.

3. Set Topology Definition> Method to J-Grid.

Normally, you would choose the H/J/C/L-Gridmethod for the first attempt at a mesh, then

change the method if required. In this case, it was found that the J-Gridmethod produces a

higher-quality mesh than the H/J/C/L-Grid method. The H/J/C/L-Gridmethod causes

ANSYS TurboGrid to choose an H-Grid, J-Grid, C-Grid, L-Grid, or a combination of these, based onheuristics. In this case, the H/J/C/L-Gridmethod causes ANSYS TurboGrid to choose a J-Grid

topology for the upstream end of the passage, and an H-Grid topology for the downstream end.

Due to the high blade metal angle on the trailing edge near the shroud, the J-Grid topology is

more appropriate for the downstream end. For details on the H/J/C/L-Grid method, see H/J/C/L

Topology Definition in the TurboGrid User's Guide.

4. Ensure that Include O-Grid is selected.

This adds an O-Grid around the blade to increase mesh orthogonality in that region.

5. Leave Include O-Grid> Width Factorset to 0.5.

This makes the O-Grid thickness equal to half the average blade thickness. In general, a suitablevalue of the O-Grid thickness depends on the blade geometry, topology type, and mesh density.

Trial-and-error adjustments are sometimes required to establish a good value when creating the

first mesh for a particular blade.

6. Leave Periodicity> Projectionset to Float on Surface.

This allows the periodic surface of the mesh to deviate from the geometric periodic surface, in

order to improve mesh skewness properties along the periodic boundary. The topology on a

given layer floats on the layer, but is not constrained to stop exactly on the intersection of the

layer with the geometric periodic surface.

7. Click Apply.


Defining the Topology
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8. Right-click Topology Setand turn off Suspend Object Updates.

The Topology Setobject name in the object selector changes to black non-italic text, indicating

that this object is now fully specified and has been generated.

After a short time, the topology appears on the hub and shroud as a structure of thick lines.Thinner lines show a preview of the mesh elements.

Object updates are suspended by default. To save computational time, you should generally keep

object updates suspended until you have finished defining the geometry. You must re-enable

object updates and allow the topology to be generated before freezing the topology settings,

which is the next step.

9. Click Freeze.

It is recommended that you freeze the topology after you specify and generate it. This prevents

the settings on the Advanced Parameters tab of Topology Set> Blade 1 from inadvertently

changing. Without freezing the topology, unwanted changes to the topology block counts might

occur as a result of making small adjustments to the topology (for example, moving a control

point).

Estimates of the total number of nodes and elements are displayed at the bottom left of the screen.

These estimates are based on the default Mesh Data settings.

Change the view to clearly show the topology on the hub:

1. Click Hide all geometry objects .


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2. Turn off the visibility of Layers> Shroud Tip to hide the topology on the shroud tip.

3. Right-click a blank area in the viewer, and click Predefined Camera> View From +X from the shortc

menu.

The heavy lines in Figure 2.1 (p. 9) indicate the (master) topology lines; the thinner lines show the 2D

mesh for the hub. Note that the 3D mesh does not yet exist.

The mesh wraps around the blade at the leading and trailing edges. This is the main characteristic of

the J-Grid topology.

Figure 2.1 J-Grid Topology and 2D Mesh on the Hub

This completes the topology definition.


The Mesh Datasettings control the number and distribution of mesh elements. Open the Mesh

Dataobject and review the settings, but leave them at their default values. Note that the target number

of nodes is set to produce a coarse mesh. In the status bar in the bottom-left corner of ANSYS TurboGrid,

you can see that the number of mesh nodes is on the order of 40000.

As stated in the problem description for this tutorial, you will produce an initial coarse mesh and then,

after verifying the mesh quality, you will increase the mesh density to produce a fine mesh. Leaving

the mesh density coarse in the meantime will reduce processing time while you adjust the topology.

2.7. Reviewing the Mesh Quality on the Hub and Shroud Tip Layers

Layers are constant-span surfaces that are used for displaying and editing the topology, and for displaying

a preview of the refined mesh. You have already seen the hub layer in Figure 2.1 (p. 9). At this point,

there are two layers: Layers> Hub, and Layers> Shroud Tip.

Before generating the 3D mesh, it is recommended that you check the mesh quality on the layers, es-

pecially the hub and shroud tip layers. By correcting any mesh problems early, you can save time by

minimizing the number of times you generate the full 3D mesh.


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If the topology were grossly skewed or distorted on the hub or shroud tip layer, the Layers object

would be shown with red text in the object selector. Since the Layersobject is shown in black text,

the mesh contains no regions with high skew on the hub and shroud tip layers.

For a more detailed analysis of the mesh quality on a layer, open the layer object and read the list of

mesh measures. If the mesh measures are not shown, select Refined Mesh Visibilityand click Apply.

The mesh measures show the extreme values for the mesh elements. If any of the mesh measures are

considered bad, they are listed in red text. The criteria for bad mesh elements are set in the Mesh

Analysis> Mesh Limitsobject. You can double-click a red mesh measure to color the bad meshelements red in the viewer.

In this case, elements with a very high aspect ratio exist close to the blade. This is to be expected, es-

pecially for a coarse mesh.

Note

The quality criterion for the Maximum Aspect Ratiomesh measure is controlled by the Edge

Length Ratio setting in the Mesh Analysis> Mesh Limitsobject.

2.8. Adding Intermediate Layers

ANSYS TurboGrid can add layers as required in order to capture spanwise variations in the geometry.

This process happens when you generate a mesh, but can also be initiated manually, as demonstrated

next:

1. Turn on the visibility of Layers> Shroud Tipto show the shroud layer, then right-click in the

viewer and click Predefined Camera> Isometric View (Y up).

By viewing the hub and shroud layers from this angle, you can see where the new layers are added.

2. Open Layers.

Note that the message indicates that 1 layer will be added.


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3. Click Auto Add Layers .

ANSYS TurboGrid adds additional layers as required; in this case, 1 layer is added.

4. Turn on the visibility of Layers> Layer 1to see the new layer in the viewer.

5. To check the mesh quality on the new layer, open Layers> Layer 1, select Refined Mesh Visibil

and click Apply.

Note that the face angles are acceptable on the new layer.


Now that the topology has been defined and the mesh quality is acceptable on all layers, generate the

mesh:

Click Insert> Mesh.

After the mesh has been generated, 3D mesh measures are available. You will check these in the next

section. Mesh visualization objects, listed under 3D Mesh, are also available. By default, one of these

objects, called Show Mesh, is shown in the viewer. You can alter this object or view other 3D Meshobjects to inspect different parts of the mesh. Later in this tutorial, you will view some of the objects

listed under 3D Mesh.

Before proceeding to the next section, turn off the visibility of 3D Mesh> Show Meshso that you

can see the mesh without obstruction.

The mesh is relatively coarse. Such a mesh is suitable when you need to regenerate the mesh repeatedly

in the course of improving the mesh quality. After attaining the required level of mesh quality, you

should make a finer mesh. Later in this tutorial, you will generate a finer mesh.

Note

In some cases, the mesh quality can be adversely affected by increasing the mesh density,

making further adjustments necessary.

2.10. Analyzing the Coarse Mesh

This section includes:

2.10.1. Analyzing the Coarse Mesh Quality

2.10.2. Looking at Mesh Data Values

2.10.3.Visualizing the Hub-to-Shroud Element Distribution

2.10.1. Analyzing the Coarse Mesh Quality

Now that the mesh has been generated, 3D mesh measures are available. These are analogous to the

2D mesh measures that are calculated on layers. As for the 2D mesh measures, the 3D mesh measures

have quality criteria set in the Mesh Analysis> Mesh Limits object.

When any mesh measure fails to meet the criteria, Mesh Analysis> Mesh Statistics (Error)

will appear in red text in the object selector. With default criteria, there will almost always be some

mesh elements that fall outside the criteria; a visual inspection of the mesh measures is usually required

to determine whether the mesh is satisfactory.


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Check the 3D mesh statistics:

1. For a visual frame of reference, ensure that Layers> Huband Layers> Shroud Tipare visible.

2. Open Mesh Analysisor Mesh Analysis> Mesh Statistics.

The mesh statistics shown here may differ slightly from what you see:

In this case, Maximum Element Volume Ratioand Maximum Edge Length Ratiodo

not meet the criteria. Not all of the mesh statistics carry the same importance. For example, it is

necessary to have a mesh with no negative volumes. Generally, poor angles should also be fixed,

but Maximum Edge Length Ratioand Maximum Element Volume Ratiovalues should

be judged based on your requirements.

3. Double-click Maximum Element Volume Ratio to display the elements that have an element

volume ratio greater than 2 (the default criterion). Alternatively, you can select Maximum Element

Volume Ratioand then click Display.

A built-in volume object, Mesh Analysis> Show Limits, automatically changes its definition

and appears in the viewer. This volume object includes the mesh elements that fail to meet the

criteria for the selected mesh measure.

The volume object appears mainly on the blade, hub, and shroud surfaces. This is normal. Note

that part of the mesh upstream and downstream of the blade is also included in the volume object.

To improve the element volume ratio in these regions, you will increase the mesh density later

in this tutorial.

4. Double-click Maximum Edge Length Ratio to display the elements that have an edge length

ratio greater than 100 (the default criterion).

The Mesh Analysis> Show Limitsobject appears mainly on the blade, hub and shroud

surfaces. This is normal.

5. Click Close.

6. Turn off the visibility of Mesh Analysis> Show Limits.


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2.10.2. Looking at Mesh Data Values

The Mesh Dataeditor tabs can be used to set and display information about the mesh. In the following

steps, you will examine the number and distribution of elements from hub to shroud tip and from

shroud tip to shroud.

1. Open Mesh Data.

2. Click the Passagetab.

Look in the Spanwise Blade Distribution Parameters section. Method is set to End Ratio

with a value of 200. The other boxes in the section are grayed out, but show the current value

for each option that ANSYS TurboGrid has calculated.

You can see that # of Elements is 20. This will change when you refine the mesh later in this tu-

torial.

3. Click the Shroud Tiptab.

Look in the Shroud Tip Distribution Parameters section. Method is set to Match Expansion

at Blade Tip. You can see that the number of elements from shroud tip to shroud is 11.

2.10.3.Visualizing the Hub-to-Shroud Element Distribution

To demonstrate the use of the 3D Meshvisualization objects, and for comparison with the finer mesh

that you will make later in this tutorial, look at the mesh distribution from hub to shroud as follows:

1. Click Unhide geometry objects .

2. Turn off the visibility of the following objects:

Geometry> Blade Set> Blade 1

Layers> Hub

Layers> Layer 1

Layers> Shroud Tip

3D Mesh> Show Mesh

3. Turn on the visibility of the following objects:

3D Mesh> LOWBLADE

3D Mesh> HIGHPERIODIC.

4. Observe the element distribution from hub to shroud tip and from shroud tip to shroud.

See Figure 2.2 (p. 14).


Analyzing the Coarse Mesh


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Figure 2.2 Hub-to-Shroud Element Distribution

2.11. Increasing the Mesh Density

As mentioned at the beginning of this tutorial, you will increase the mesh density. Such an increase in

mesh density can result in a more accurate CFD solution.

1. Open Mesh Data.

2. On the Mesh Size tab, leave Methodset to Target Passage Mesh Size.

3. Set Node Count to Fine (250000).


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4. Click Apply.

2.12. Regenerating the MeshAfter changing the mesh density, the coarse mesh was deleted. Generate the fine mesh:

Click Insert> Mesh.

2.13. Analyzing the Fine Mesh

This section includes:

2.13.1. Analyzing the Fine Mesh Quality

2.13.2.Visualizing the Hub-to-Shroud Element Distribution in the Fine Mesh

2.13.3. Observing the Shroud Tip Mesh

2.13.4. Examining the Mesh Qualitatively2.13.5. Creating a Legend

2.13.1. Analyzing the Fine Mesh Quality

Changing the mesh density can affect the mesh statistics. Confirm that the mesh statistics are acceptable:

1. Open Mesh Analysis.

The mesh statistics shown here may differ slightly from what you see:


Analyzing the Fine Mesh


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You can see that, in this case, after increasing the mesh density, the Maximum Element Volume

Ratiomesh statistic has improved.

2. Double-click Maximum Element Volume Ratio.

Note that the volume object does not occupy as much of the mesh upstream and downstream

of the blade as it did for the coarse mesh. The element volume ratio in these regions has improved

as a result of increasing the mesh density.

3. Click Close.

4. Turn off the visibility of Mesh Analysis (Error)> Show Limits.

2.13.2.Visualizing the Hub-to-Shroud Element Distribution in the Fine Mesh

Now that the mesh density has been increased, re-examine the spanwise distribution of mesh elements:

1. On the Passage tab for the Mesh Dataobject, compare the number of elements from hub to shroudtip (66) with the value obtained for the coarse mesh (20). The number of elements has risen.

2. Look at the Shroud Tip tab to verify that more elements now exist between the shroud tip and shroud

(11 before, now 16).

3. See Figure 2.3(p. 17), and compare it with Figure 2.2 (p. 14).


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Figure 2.3 Hub-to-Shroud Element Distribution in the Fine Mesh

4. Turn off the visibility of all of the 3D Mesh objects.

2.13.3. Observing the Shroud Tip Mesh

A mesh interface exists in the shroud tip gap. In order to see this interface:

1. Turn on the visibility of 3D Mesh> SHROUD TIP.

2. Click Hide all geometry objects .

3. Zoom in to view the mesh on the shroud tip.

Figure 2.4 (p. 18)shows this mesh at the leading edge of the blade. Note how the nodes do not

line up along the middle of the blade, due to the default use of a general grid (GGI) interfacealong the shroud tip of the blade.


Analyzing the Fine Mesh


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Figure 2.4 Surface Group: Tip Near Leading Edge

4. Turn off the visibility of 3D Mesh> SHROUD TIP.

5. Click Unhide geometry objects .

2.13.4. Examining the Mesh Qualitatively

You will now examine the mesh qualitatively using a turbo surface. Change the Show Mesh turbo

surface so that it appears on the hub, and color it to show the variation in Edge Length Ratio (a

variable that was computed at the time the mesh was generated):

1. Turn on the visibility of 3D Mesh> Show Mesh.

2. Open 3D Mesh> Show Mesh.

3. Leave Variableset to K.

K is equal to the node number in the spanwise direction, ranging from 1 at the hub to a positive

integer value at the shroud.

4. Set Value to 1.

This will cause the turbo surface to appear on the hub.

5. Click the Colortab.

6. Ensure that Mode is set to Variable.

7. Set Variable to Edge Length Ratio.

8. Set Range to Local.

This will cause the range of colors in the color map to be distributed over the range of values

found on the turbo surface, rather that over the global range or a user-defined range.

9. Click the Rendertab.

10. Ensure that Draw Faces is selected.

11. Click Apply.

12. To avoid visual conflicts between the turbo surface and the hub, which are coincident, turn off thevisibility of Geometry> Hub.

Note that you can edit the rendering properties of the hub to achieve a similar result. The advantage

of using a turbo surface is that you can redefine its location. For example, you could change the value

of K in the current turbo surface to see Edge Length Ratioon a different nodal plane.


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Note

You can create new turbo surfaces. To begin the process of creating a new turbo surface,

click Insert> User Defined> Turbo Surface.

Note

To show distinct color bands, you could make a contour plot object that applies to an existing

locator (geometric surface, turbo surface, or other graphic objects that involve surfaces). To

begin the process of creating a contour plot, ensure that you have a suitable locator already

defined, then click Insert> User Defined> Contour.

Tip

For objects that are colored by a variable, it is best to view them with lighting turned off, so

that the colors are not altered according to the angle of view. The lighting is controlled by

a setting on the Rendertab.

2.13.5. Creating a Legend

In the previous section, you modified a turbo surface by coloring it according to Edge Length Ratio.

To reveal the color map used to match values of Edge Length Ratiowith particular colors, create

a legend for the turbo surface:

1. Click Insert> User Defined> Legend.

2. Click OK to accept the default name.

3. Set Plotto TURBO SURFACE:Show Mesh.

4. Set Title Mode toVariable and Location

.5. Click Apply.

A legend appears in the viewer, showing the correspondence between values of Edge Length

Ratioand colors for the Show Mesh object.

You may want to modify 3D Mesh> Show Meshto plot it on different locations, or to color it by

different variables. The legend will be updated automatically whenever you make changes to the turbo

surface.


Save the mesh:

1. Click File> Save Mesh As.

2. Ensure that File type is set to ANSYS CFX.

3. Set Export Units to cm.

4. Set File name to rotor37.gtm.

5. Ensure that your working directory is set correctly.

6. Click Save.


Saving the Mesh


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If you want to revisit this mesh at a later date, save the state:

1. Click File> Save State As.

2. Enter an appropriate state file name.

3. Click Save.


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Chapter 3: Steam Stator

This tutorial includes:3.1. Before You Begin





3.6. Reviewing the Mesh Quality on the Hub and Shroud Layers


3.8. Analyzing the Mesh



This tutorial teaches you how to:

Import hub, shroud, and blade geometry from individual curve files.

Change the method of constructing the hub and shroud curve types.

Make fine adjustments to the mesh topology.

Make colored surfaces to show variations in mesh measures (such as Minimum Face Angle).

As you work through this tutorial, you will create a mesh for a blade passage of a steam stator. A typical

blade passage is shown by the black outline in the figure below.



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The stator contains 60 blades distributed about the Z-axis. Within the blade passage, the maximum

diameter of the shroud is approximately 97.5 cm.

3.1. Before You BeginIf this is your first tutorial, review the topics in Introduction to the ANSYS TurboGrid Tutorials (p. 1).


1. Prepare the working directory using the files in the examples/statordirectory.

For details, see Preparing a Working Directory (p. 1).

2. Set the working directory and start ANSYS TurboGrid.

For details, see Setting the Working Directory and Starting ANSYS TurboGrid (p. 1).


In the first tutorial, you loaded a BladeGen.inf file in order to specify the machine data (# of blade

sets, rotation axis, and units) and curve files. In this tutorial, you will enter such data manually using

the Load Curvescommand.

3.3.1. Loading the Curves

Load the curve files for the steam stator as follows:


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1. Click File> Load Curves to open the Load TurboGrid Curvesdialog box.

The Load TurboGrid Curvesdialog box appears. ANSYS TurboGrid fills in the names of the curve

files based on the files that are present in the working directory; The first .crvor .curve file

found that has a name containing hub, shroud, or blade/profile is selected as the hub,

shroud, or blade file, respectively.

2. Set # of Bladesets to 60.

3. Set Rotation> Method to Principal Axisand Axis to Z.

4. Set Coordinates and Units> Coordinates to Cartesianand Length Units to cm.

These units are used to interpret the data in the curve files.

5. Ensure that, under TurboGrid Curve Files, Hub is set to ./hub.curve, Shroud is set to

./shroud.curve, and Blade is set to ./profile.curve.

6. Click OK to save the settings.

The progress bar at the bottom right of the screen shows the geometry generation progress. After the

geometry has been generated, you can see the hub, shroud, and blade for one passage. Along the

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