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ANSYS ICEM CFD / AI*Environment v.11ANSYS ICEM CFD / AI*Environment v.11část 1/4část 1/4
SVS FEM s.r.o.Škrochova 42 Brno
info@svsfem.cz
Strana 2
© 2004-2007 SVS FEM s.r.o.Všechna práva vyhrazena.
Školící materiály, včetně všech částí a příloh jsou chráněny autorskými právy. Jakékoliv jejich užití mimo rámec autorských práv, je vázáno na souhlas fy. SVS FEM s.r.o. To platí především o kopírování, překladech, mikrofiších a zpracování elektronickými systémy.
Školící materiály fŠkolící materiály fyy. SVS FEM . SVS FEM ss.r.o..r.o.
ANSYS ICEM CFD / AI*Environment v.11ANSYS ICEM CFD / AI*Environment v.11CAD Import and FunctionsCAD Import and Functions
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• AI*Environment has 2 primary means of obtaining geometry:– CAD model import, including a design modeler in Workbench– Geometry creation
• Imported solids are converted to surfaces– A “Body” within AI*E is simply a closed set of surfaces.
Geometry in AI*EnvironmentGeometry in AI*Environment
• It is possible to create complicated geometries, but most users import from CAD
This Jet engine model with functioning thrust reversers was built with AI*Environments geometry tools
Strana 5Solid EdgeSolid Edge
Wide CAD SupportWide CAD Support
I-DEASI-DEAS
SolidWorksSolidWorks
Pro/EngineerPro/Engineer
CATIACATIA
• 3rd Party Cad– STEP/IGES– ACIS– Parasolid– DWG/DXF– IDI– GEMS
• Faceted Data– STL– VRML– NASTRAN,
PATRAN, ANSYS, LS-DYNA
• Formatted Point Data
• Catia V5 Integration
• Direct CAD interfaces/Geometry import- Parametric meshing
UnigraphicsUnigraphics
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PersistencePersistence
Link to active CAD Geometry
When a model is changed in Pro/E, or by the Design Modeler, the model can be updated in ANSYS ICEM CFD
Parametric changes in Pro/E
Advanced mesher setup, including Part names, mesh parameters, boundary conditions, etc are tied directly to entity names.
These are persistent from one design change to the next
Mesh parameters set up in ANSYS ICEM CFD
Update Geometry in ANSYS ICEM CFD
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– Associative with CATIA-V5 model, mesh responds to parametric change in CATIA
– Created mesh can be used with all Catia-V5 based applications
– Same tool for CFD and Structural analysis
– CFD Gateway
Geometry Model in Catia V5
CATIA V5 Based technologyCATIA V5 Based technology
ANSYS ICEM-CFD/AI*Enviroment v.11ANSYS ICEM-CFD/AI*Enviroment v.11Workbench IntegrationWorkbench Integration
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11.0 Workbench integration11.0 Workbench integration
• Advanced Meshing in Simulation• GTM file for CFX Pre on Project Page • Improved Project Page Handling • Commonized CAD licensing
Represents integration of tool in Workbench
Represents communication directly between products
ANSYS
CFX
ICEM CFD
Workbench
CFX
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11.0 Workbench Meshing11.0 Workbench Meshing
Workbench Meshing • Framework for providing
common meshing tools for any application inside Workbench
• ICEM CFD uniform quad/tri meshing technology is now exposed natively in Simulation
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AN
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orkb
ench
External Solver
Workbench Geometry HandlingWorkbench Geometry Handling
3rd Party CADIGES, ACIS, DWG, STEP…
Faceted DataSTL, Nastran,
Patran, VRML…
ICEM CFDAdvanced
Meshing Tab
Direct CADCATIA, Pro/E, I-DEAS,
UG, SolidWorks…
As always, you can import geometry
directly into ICEM CFD
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External Solver
Workbench Geometry HandlingWorkbench Geometry Handling
Faceted DataSTL, Nastran,
Patran, VRML…
ICEM CFDAdvanced
Meshing Tab
AN
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orkb
ench
Geometry Engine
Direct CADCATIA, Pro/E, I-DEAS,
UG, SolidWorks…
3rd Party CADSTEP, Parasolid
Or use the Workbench CAD
connection Products
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Workbench Geometry HandlingWorkbench Geometry Handling
Faceted DataSTL, Nastran,
Patran, VRML…
ICEM CFDAdvanced Meshing Tab
AN
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S W
orkb
ench
Geometry Engine
Direct CADCATIA, Pro/E, I-DEAS,
UG, SolidWorks…
3rd Party CADSTEP, Parasolid
Design Simulation
MesherThe same interfaces for
all ANSYS products
• Common CAD connection licenses– 1 Connection product per CAD system for all ANSYS Products– Direct to ANSYS ICEM CFD or thru Workbench
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Workbench Geometry HandlingWorkbench Geometry Handling
Faceted DataSTL, Nastran,
Patran, VRML…
ICEM CFDAdvanced Meshing Tab
AN
SY
S W
orkb
ench
Geometry Engine
Direct CADCATIA, Pro/E, I-DEAS,
UG, SolidWorks…
3rd Party CADSTEP, Parasolid
Design Simulation
MesherDesign Modeler
• Use design modeler to repair/simplify CAD• Bi-directional parametric link to CAD
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Model Diagnosis and RepairModel Diagnosis and Repair
Build topology function• Curves are extracted from surface model• Enables model diagnosis• Curves form basis for
geometry repair
Imported CADImported CAD
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Geometry MergingGeometry Merging
• Automatic merging of multiple CAD parts into a single model– Hybrid Approach
• Direct CAD• Translated CAD• Faceted Data
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Geometry RepairGeometry Repair
–Automated tools for:• Evaluating CAD integrity• Extracting surface topology (curves,
points, etc.)• Repair of gaps, closing of edges• Simplifying data
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Repair•Build Diagnostic Topology•Close Hole•Remove Hole•Surface retrimming/matching •Surface extension•Un-trim surface•Split by curvature•Modify surface normals•Bolt hole detection•Button detection•Fillet detection
Curve creation•From points•Arc/Circle•Surface param•Intersection•Surface projection•Segmentation•Concatenation•Surface Boundary•Modify curve tools
Geometry HandlingGeometry Handling
Surface editing•Surface from curves•Driven surface•Swept surface•Revolved surface•Offset surface•Midsurface•Adjust thickness•Lofted surface
Body definitions• From connectivity• Material PointPoint creation
•From screen•Explicit•Offset•Center-point•Between points•Endpoints•Intersection•Along curve•Projection tocurve•Projection to surface
•Curtain surface•Surface trimming
•Merged surface
•Shrink wrapped surface
•Standard Shapes
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Geometry HandlingGeometry Handling
• Feature detection– Hole detection/removal– Button detection– Fillet detection
• Geometry repair– Surface reapproximation– Surface untrimming
Example: auto-detect buttons
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Geometry HandlingGeometry Handling
• Match edges– Automatic– User definition– One command
• Close holes• Remove holes• Modify Surface normal• Model diagnostic
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Midsurface/Seam WeldingMidsurface/Seam Welding
• Semi-Automatic Tool to close gaps after midsurfacing• Preview/Edit automatic extensions• New methodology extends surfaces for robust welding
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Transform Geometry•Translate•Rotate•Mirror•Scale•Translate & Rotate
•Three Points•Curve to Curve
Faceted Curves•Convert from B-spline•Create Curve•Move Nodes•Merge Nodes•Create Segment•Delete Segment•Split Segment•Restrict Segments•Move to new/existing Part
Geometry HandlingGeometry Handling
Faceted Surfaces•Convert from B-spline•Coarsen surface•Create surface•Merge Edges•Split Edges•Swap Edges•Move Nodes•Merge Nodes
Faceted Tools
•Create Triangles•Delete Triangles
•Split Triangles
•Restrict Triangles
•Move to new/existing Part
•Merge Surfaces
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Faceted GeometryFaceted Geometry
• Faceted tools– Easier to access– Powerful tools for improving Scan data
• Eg. Unusable model with 1500k poor triangles, holes, overlaps, etc. to 400k meshable model
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The Demo ModelThe Demo Model
The Stats
3.7 million line Nastran File
1000+ parts
Estimated at 800000 CAD surfaces
Internal CAD also
If 1 surface uses 5k of RAM then ‘true CAD model’ = 4 Gigs to load the part!
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The Demo ModelThe Demo Model
Automatically Shrink Wraped• No Shadowing effects• Final Shrink wrap can be used as
simplified geometry• Try with the Hexa Core technology
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