doc/salome/examples/defining_hypotheses_ex17.py

   1 # Viscous layers construction
   2
   3 import salome
   4 salome.salome_init()
   5 import GEOM
   6 from salome.geom import geomBuilder
   7 geompy = geomBuilder.New(salome.myStudy)
   8
   9 import SMESH, SALOMEDS
  10 from salome.smesh import smeshBuilder
  11 smesh =  smeshBuilder.New(salome.myStudy)
  12
  13 X = geompy.MakeVectorDXDYDZ( 1,0,0 )
  14 O = geompy.MakeVertex( 100,50,50 )
  15 plane = geompy.MakePlane( O, X, 200 ) # plane YZ
  16
  17 box = geompy.MakeBoxDXDYDZ(200,100,100)
  18
  19 shape = geompy.MakeHalfPartition( box, plane )
  20
  21 faces = geompy.SubShapeAllSorted(shape, geompy.ShapeType["FACE"])
  22 face1 = faces[1]
  23 ignoreFaces = [ faces[0], faces[-1]]
  24
  25 geompy.addToStudy( shape, "shape" )
  26 geompy.addToStudyInFather( shape, face1, "face1")
  27
  28 # 3D Viscous layers
  29
  30 mesh = smesh.Mesh(shape, "CFD")
  31
  32 mesh.Segment().NumberOfSegments( 4 )
  33
  34 mesh.Triangle()
  35 mesh.Quadrangle(face1)
  36 mesh.Compute()
  37 algo3D = mesh.Tetrahedron()
  38
  39 thickness = 20
  40 numberOfLayers = 10
  41 stretchFactor = 1.5
  42 layersHyp = algo3D.ViscousLayers(thickness,numberOfLayers,stretchFactor,ignoreFaces)
  43
  44 mesh.Compute()
  45
  46 mesh.MakeGroup("Tetras",SMESH.VOLUME,SMESH.FT_ElemGeomType,"=",SMESH.Geom_TETRA)
  47 mesh.MakeGroup("Pyras",SMESH.VOLUME,SMESH.FT_ElemGeomType,"=",SMESH.Geom_PYRAMID)
  48 mesh.MakeGroup("Prims",SMESH.VOLUME,SMESH.FT_ElemGeomType,"=",SMESH.Geom_PENTA)
  49
  50 # 2D Viscous layers
  51
  52 # 3 edges of the 4 edges of face1
  53 edgeIds = geompy.SubShapeAllIDs( face1, geompy.ShapeType["EDGE"])[:-1]
  54
  55 mesh = smesh.Mesh(face1,"VicsousLayers2D")
  56 mesh.Segment().NumberOfSegments( 5 )
  57
  58 # viscous layers should be created on 1 edge, as we set 3 edges to ignore
  59 vlHyp = mesh.Triangle().ViscousLayers2D( 2, 3, 1.5, edgeIds, isEdgesToIgnore=True )
  60
  61 mesh.Compute()
  62
  63 # viscous layers should be created on 3 edges, as we pass isEdgesToIgnore=False
  64 vlHyp.SetEdges( edgeIds, False )
  65
  66 mesh.Compute()