The SC/Tetra Pre-processor is used to prepare the geometry data for computation. It generates the computational mesh and defines boundary conditions. SC/Tetra's pre-processor is equipped with an intuitive graphical user interface (GUI) with Wizard based condition settings and CAD model repair functionality.
SC/Tetra uses an octant to specify the mesh resolution for a geometry and creates grids using the Advancing Front Method. It can create tetrahedron, pentahedron, and hexahedron elements. Prism layers can be inserted at walls to provide fine grid resolution in the boundary layer.
Adaptive Mesh Refinement
The Adaptive Mesh Refinement function can automatically refine the mesh resolution according to the calculation situation. It determines the gradients of velocity, pressure and temperature, and automatically refines the mesh to control the gradient magnitude An adaptive mesh can be automatically requested to provide satisfactory resolution with the least number of cells.
SC/Tetra is general purpose CFD software that can simulate many different physical phenomena. Usually, CFD software having many functional options tends to be complicated and difficult to use. However, SC/Tetra uses a well organized Wizard to guide setting boundary conditions for the selected phenomenon, which simplifies the process.
The SC/Tetra Wizard enables the user to choose which phenomenon will be simulated. It is enhanced to show only those items that are necessary for the chosen phenomenon. This enables the user to set the condition without any confusion.
Each Wizard shows only regions to which certain condition can be applied. This also helps minimize input error.
CAD Data Repair Function
SC/Tetra can import 3D data in STL and DXF formats. If the 3D data has defects in it, a computational mesh cannot be created. The SC/Tetra pre-processor contains powerful geometry diagnostic and repair functionality that rival 3rd party grid generation software. Cradle's CADthru software can also be used to automatically repair 3D models.
SC/Tetra is equipped with a wrapping function that is capable of fixing errors in the CAD geometry with greater precision than can be achieved manually. This function can also be used to simplify the geometry.
List of Pre-processor Function
|Shape Geometry data modification||CAD interface||Parasolid(.x_t) , STEP , STL , DXF(3D-FACE), CATIA V5(.catpart, catproduct), CATIA V4(.model, .session, .exp), Pro/Engineer(.asm, .prt), SolidWorks(.sldasm, sldprt), Autodesk Inventor(.ipt, iam), UG NX(.prt), IGES(.iges, .igs), ACIS SAT(.sat), Solid Edge(.par), VDAFS(.vda), CADthru(.ct3, .ct2)*|
|ABAQUS(.inp) , ANSYS(.cdb) , Design Space(.dat)
I-DEAS(.unv) , NASTRAN(.nas)
Plot3D(.fmt, .p2dfmt, p3dfmt, .dat), CGNS(.cngs)
|Data correction function||Detection and modification of overlapping surfaces|
|Detection and modification of crossed surfaces|
|Detection and modification of free edge|
|Detection and modification of edges and surfaces at minute scales|
|Creation of missing surface|
|Wrapping (inside/outside), Creation of missing surface|
|Geometry modification function||Creation of region (Cuboid, Cylinder, Sphere)|
|Surface creation by sweep (Translate, Rotate, Face Normal, Helix)|
|Extraction of point and outline|
|Mesh Generation||Automated mesh generation||Advancing front method, Serial/parallel procession|
|Element generation by sweep||Translate, Rotate, Face Normal, Helix|
|Prism layer insertion||Before/After volume meshing|
|Analysis condition setting||Interactive setting||Condition Wizard|
|Operation, Controlled environment||Tree style menu|
|Automatic sequential execution||Mesh generation to solver execution|
|Parallel processing*||Local mode, Cluster mode|
|Macro functions||Operational history (.his file)|
|Registration functions||Hot key registration|
|Mouse operation||Compliance with CAD|
|External program control||VB Interface|
Red: New functions of V10
Blue: Upgraded functions
*CADthru is a product of Software Cradle