Chapter 6 ANSYS CFX 9 0 2004 ANSYS

Overview • CFX Strategy and Roadmap Summary • CFX-in-Workbench • CFX-Mesh ANSYS, Inc. Proprietary

CFX Product Strategy • Continued development of advanced, best-inclass core technologies – CFX is

CFX Roadmap Summary • CFX-5 – CFX-5. 7 current major release – Q 2

CFX-in-Workbench • CFX-Mesh is already in Workbench – Provides integrated CAD/geometry/meshing environment • The

CFX-in-Workbench, Design. Modeler ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory

CFX-in-Workbench Example ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156

Positioning of CFX-Mesh • • Incorporated natively into ANSYS Workbench Tuned to produce as

Basics • Hybrid mesh approach – Triangular surface mesh – Prismatic/Inflated mesh – Pyramidal

Hybrid mesh approach ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory

Inflation marked surfaces ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory

Initial surface triangulation ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory

Basic inflation – 5 layers ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1,

Complete hybrid mesh ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory

New features in CFX-Mesh 9. 0 • Persistence of mesh setting following geometry changes

Persistence – “Updated” geometry ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004

Mesh settings persist ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory

2 D meshing capability ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004

2 D mesh (1 element thick) ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October

Axisymmetric mesh ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156

Improved prism meshing • Improved normal smoothing • Extended inflation layers at unit aspect

Normal smoothing in 8. 1 ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1,

Improved normal smoothing in 9. 0 ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October

Extended Inflation Layer Thickness ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004

Direct CAD import CAD Packages include: • Autodesk Inventor • Solid Edge • Solid

Virtual topology – Beta capability • Virtual topology modifies the model seen by the

Virtual edge example Short edges cluster mesh and have no relevance to the calculation

Virtual edge example, with VT Unnecessary clustering is eliminated ANSYS, Inc. Proprietary © 2004

Virtual face example ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory

Original mesh ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156

New “Virtual Face” created ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004

New mesh on virtual face ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1,

Summary • Workbench 9. 0 + CFX-Mesh 9. 0 + CFX-5. 7. 1 in

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CFX Product Strategy • Continued development of advanced, best-inclass core technologies – CFX is absolutely major league CFD • Part of ANSYS Integrated CAE Strategy – CFX products and technologies integrating into ANSYS Workbench • Customer benefits from: – Leading robustness/speed/accuracy for CFD solution – CAE interoperability with other Workbench tools and physics – major differentiator ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156 6 -3

CFX Roadmap Summary • CFX-5 – CFX-5. 7 current major release – Q 2 2004 – CFX-5. 7. 1 – first integration into Workbench – CFX-5. 8 – next major release – Q 2 2005 • CFX-Mesh – CFX-Mesh 8. 1 – first integration into Workbench – CFX-Mesh 9. 0 – major improvements – CFX-Mesh will continue to be closer integrated into Workbench with each successive release • Turbo Products not covered: – CFX-Turbo. Grid – CFX-Blade. Gen ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156 6 -4

CFX-in-Workbench • CFX-Mesh is already in Workbench – Provides integrated CAD/geometry/meshing environment • The 3 major modules of CFX-5 – CFX-Pre, Solver, CFX-Post – are now also integrated as Tabs – – CFX-5. 7. 1 is bug-fixed and “GUI harmonized” 5. 7 Full project page support for files and launching Single install Shows up as the “Advanced CFD Application” • First time for complete, general-purpose CFD solution in one environment – CAD/geometry/meshing/physics/solution/post all together ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156 6 -5

Positioning of CFX-Mesh • • Incorporated natively into ANSYS Workbench Tuned to produce as optimal as possible meshes for CFX-5 Tightly coupled with Design. Modeler For easy-to-use, high-quality CFD mesh generation – Heavily defaulted inputs; very automated sensitivity to geometric detail – few user inputs required – Produces orthogonal and smooth near-wall prism region for boundary layer resolution • (Should use ICEM CFD when: – Have very large number of geometric surfaces, or have significantly faulty CAD – Need to do manual mesh editing – Need 3 D blocked Hexahedral elements) ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156 6 -12

Basics • Hybrid mesh approach – Triangular surface mesh – Prismatic/Inflated mesh – Pyramidal intermediate elements – Tetrahedral mesh generator ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156 6 -13

New features in CFX-Mesh 9. 0 • Persistence of mesh setting following geometry changes • 2 D/Axisymmetric meshing capability • Improved prism meshing • Beta Virtual Topology capability for faulty CAD; currently uses existing Workbench VT technology • Direct CAD import • Local parallel meshing capability • Body specific meshing • Improved mesh control setting ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156 6 -19

Direct CAD import CAD Packages include: • Autodesk Inventor • Solid Edge • Solid Works • Unigraphics • Mechanical Desktop Supports geometry updates i. e. persistent IDs ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156 6 -29

Virtual topology – Beta capability • Virtual topology modifies the model seen by the UI and mesh algorithms, it does not modify the underlying geometry • Virtual face – A virtual face is a combination of faces that will be treated as in individual surface • Virtual edge – A virtual edge is a combination of edges that will be treated as in individual surface ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory #002156 6 -30