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Today’s sophisticated analysis environment requires geometry integrated mesh generation and post-processing tools. ICEM CFD is the only tool available that maintains a close relationship with geometry during mesh generation, smoothing, mesh editing, and post-processing. ICEM CFD provides sophisticated geometry acquisition, mesh generation, mesh editing, a wide variety of solver outputs and post-processing.
ICEM CFD is used for engineering applications such as computational fluid dynamics and structural analysis. The grid generation tools offer the capability to parametrically create grids from geometry in multi-block structured, unstructured hexahedral, tetrahedral, hybrid grids consisting of hexahedral, tetrahedral, pyramidal and prismatic cells; and Cartesian grid formats combined with boundary conditions. Over 100 flow solver and structural analysis translators are provided to produce an input file containing mesh and boundary conditions. ICEM CFD also offers tools for post-processing and mesh optimization.
Blue boxes represent tools provided by ICEM CFD
In ICEM CFD environment, geometry is acquired using the geometry tools. During geometry acquisition the surfaces, curves and points are tagged and mesh size information can be attached. The user selects the appropriate grid generation module to create the computational grid. The boundary conditions can also be attached to the tagging information. The mesh, boundary conditions and topology information then can be translated into over 100 flow solvers and structural analysis codes. ICEM CFD offers a wide range of mesh smoothing, boundary condition editing and mesh visualization tools for both structured and unstructured meshes. Using the mesh optimization tool computational grids can be adapted to solutions. The output from flow solvers can be post-processed and be tied into the mesh optimization tool.
ICEM CFD takes a new approach to pre-processing by allowing engineers to use the original 3D CAD geometry instead of building separate analysis models. ICEM CFD’s grid generation modules utilize multiple ways of integrating CAD geometry to analysis.
ICEM CFD’s geometry database can combine geometries acquired with any of the tools provided. For instance users can combine STL data with geometry acquired from direct CAD interfaces with IGES geometry definitions.
After the geometry is acquired and grouped under families, boundary conditions and mesh size definitions can be defined. Once this information is set-up and established, modifications to the master model can be reflected through immediate regeneration of the analysis model or post-processing can take advantage of the geometry relationship. ICEM CFD user’s can take a more active role earlier on and throughout the design cycle by providing timely solutions.
Geometries can be brought into ICEM CFD by:
Standard Interfaces
Unstructured Input
Standard Interfaces:
We can read 3rd party CAD such as STEP, IGES, ACIS, Parasolid, DWG/DXF, IDI, and GEMS. We can also read many forms of Faceted data and Formatted point clouds. Workbench integration provides the user with the Design Medeler tool which enables rapid preparation of CAE geometry and Bi-Directional CAD associativity.
Direct CAD Interfaces:
The ICEM CFD Direct CAD Interfaces allow users to setup all the meshing parameters in their own CAD systems. Users can pick surfaces, curves and points, group these entities into families, and assign mesh sizes for grid generation. The selected geometry can be transferred directly into ICEM CFD's geometry database where the user can launch meshing modules of ICEM CFD. These interfaces are available for the CATIA, Pro/Engineer, SDRC I-DEAS, SolidWorks, and Unigraphics CAD systems. The environment provided by the direct CAD interfaces bridge the parametric geometry creation tools available in CAD systems and the computational mesh generation, post-processing and mesh optimization tools available in ICEM CFD.
Unstructured Surface Data Input:
These modules make use of the surfaces geometry definitions in STL (Stereolithography), Patran triangular surface grid format, ANSYS surface grid format, Plot3d (popular Aerospace format for multi-block structured surface meshes) and I-DEAS unstructured surface grid format. Driving curves and points for mesh generation can be extracted from these surface definitions using ICEM CFD Unput.
