ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. Chapter 6 ANSYS CFX 9.0

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features Overview CFX Strategy and Roadmap Summary CFX-in-Workbench CFX-Mesh

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features CFX Product Strategy Continued development of advanced, best-in- class 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 # New Features CFX Roadmap Summary CFX-5 –CFX-5.7 current major release – Q –CFX – first integration into Workbench –CFX-5.8 – next major release – Q 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-TurboGrid –CFX-BladeGen

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features 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 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 # New Features CFX-in-Workbench, DesignModeler

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features CFX-in-Workbench, DesignModeler

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features CFX-in-Workbench, DesignModeler

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features CFX-in-Workbench, DesignModeler

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features CFX-in-Workbench, DesignModeler

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

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features Positioning of CFX-Mesh Incorporated natively into ANSYS Workbench Tuned to produce as optimal as possible meshes for CFX-5 Tightly coupled with DesignModeler 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 3D blocked Hexahedral elements)

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features Basics Hybrid mesh approach –Triangular surface mesh Hybrid mesh approach –Triangular surface mesh –Prismatic/Inflated mesh Hybrid mesh approach –Triangular surface mesh –Prismatic/Inflated mesh –Pyramidal intermediate elements 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 # New Features Hybrid mesh approach

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

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

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features Basic inflation – 5 layers

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

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features New features in CFX-Mesh 9.0 Persistence of mesh setting following geometry changes 2D/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 # New Features Persistence – “Updated” geometry

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

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features 2D meshing capability

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

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

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features Improved prism meshing Improved normal smoothing Extended inflation layers at unit aspect ratio

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features Normal smoothing in 8.1

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features Improved normal smoothing in 9.0

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features Extended Inflation Layer Thickness

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features 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 # New Features 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 # New Features Virtual edge example Short edges cluster mesh and have no relevance to the calculation

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features Virtual edge example, with VT Unnecessary clustering is eliminated

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

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

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

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

ANSYS, Inc. Proprietary © 2004 ANSYS, Inc. October 1, 2004 Inventory # New Features Summary Workbench CFX-Mesh CFX in Workbench rocks!