tests/enforced_mesh.py

   1 # -*- coding: utf-8 -*-
   2
   3 import sys
   4 import salome
   5
   6 salome.salome_init()
   7
   8 ###
   9 ### GEOM component
  10 ###
  11
  12 import GEOM
  13 from salome.geom import geomBuilder
  14 import math
  15 import SALOMEDS
  16
  17
  18 geompy = geomBuilder.New()
  19
  20 # first cylinder
  21 r1 = 0.5
  22 h1 = 5
  23
  24 # second cylinder
  25 r2 = 0.3
  26 h2 = 3
  27
  28 length_piquage = 1.5
  29
  30 O = geompy.MakeVertex(0, 0, 0)
  31 OX = geompy.MakeVectorDXDYDZ(1, 0, 0)
  32 OY = geompy.MakeVectorDXDYDZ(0, 1, 0)
  33 OZ = geompy.MakeVectorDXDYDZ(0, 0, 1)
  34 geompy.addToStudy( O, 'O' )
  35 geompy.addToStudy( OX, 'OX' )
  36 geompy.addToStudy( OY, 'OY' )
  37 geompy.addToStudy( OZ, 'OZ' )
  38
  39 Cylinder_1 = geompy.MakeCylinderRH(r1, h1)
  40 Cylinder_2 = geompy.MakeCylinderRH(r2, h2)
  41 Rotation_1 = geompy.MakeRotation(Cylinder_2, OY, -90*math.pi/180.0)
  42 Translation_1 = geompy.MakeTranslation(Rotation_1, 0, 0, length_piquage)
  43
  44 piquage = geompy.MakeFuseList([Cylinder_1, Translation_1], True, True)
  45 geompy.addToStudy( piquage, 'piquage' )
  46
  47 Inlet_z = geompy.GetFaceNearPoint(piquage, O)
  48 geompy.addToStudyInFather( piquage, Inlet_z, 'Inlet_z' )
  49
  50 p_inlet_x = geompy.MakeVertex(-h2, 0, length_piquage)
  51 Inlet_x = geompy.GetFaceNearPoint(piquage, p_inlet_x)
  52 geompy.addToStudyInFather( piquage, Inlet_x, 'Inlet_x' )
  53
  54 p_outlet = geompy.MakeVertex(0, 0, h1)
  55 Outlet = geompy.GetFaceNearPoint(piquage, p_outlet)
  56 geompy.addToStudyInFather( piquage, Outlet, 'Outlet' )
  57
  58 Wall = geompy.CreateGroup(piquage, geompy.ShapeType["FACE"])
  59 faces = geompy.SubShapeAll(piquage, geompy.ShapeType["FACE"])
  60 geompy.UnionList(Wall, faces)
  61 geompy.DifferenceList(Wall, [Inlet_x, Inlet_z, Outlet])
  62 geompy.addToStudyInFather( piquage, Wall, 'Wall' )
  63
  64 p_corner = geompy.MakeVertex(-r2, 0, length_piquage+r2)
  65 corner = geompy.GetVertexNearPoint(piquage, p_corner)
  66 geompy.addToStudyInFather( piquage, corner, 'corner' )
  67
  68 p1 = geompy.MakeVertex(0, -0.25, 1)
  69 p2 = geompy.MakeVertex(0, 0.25, 1)
  70 p3 = geompy.MakeVertex(0, 0.25, 3)
  71 p4 = geompy.MakeVertex(0, -0.25, 3)
  72
  73 wire = geompy.MakePolyline([p1, p2, p3, p4, p1])
  74 face = geompy.MakeFace(wire, 1, theName="face")
  75
  76 ###
  77 ### SMESH component
  78 ###
  79
  80 import  SMESH, SALOMEDS
  81 from salome.smesh import smeshBuilder
  82
  83 from salome.StdMeshers import StdMeshersBuilder
  84
  85 smesh = smeshBuilder.New()
  86
  87 Mesh_faces = smesh.Mesh(face)
  88 Mesh_faces.Triangle(algo=smeshBuilder.MG_CADSurf)
  89 Mesh_faces.Compute()
  90
  91
  92 # Viscous layers with Netgen additional hypothesis
  93 # ================================================
  94
  95 Mesh_1 = smesh.Mesh(piquage)
  96 NETGEN_2D = Mesh_1.Triangle(algo=smeshBuilder.NETGEN_1D2D)
  97 NETGEN_2D_Parameters = NETGEN_2D.Parameters()
  98
  99 NETGEN_2D_Parameters.SetMinSize( 0.01 )
 100 NETGEN_2D_Parameters.SetLocalSizeOnShape(corner, 0.01)
 101 NETGEN_2D_Parameters.SetFineness( 5 )
 102 NETGEN_2D_Parameters.SetGrowthRate( 0.1 )
 103 NETGEN_2D_Parameters.SetNbSegPerEdge( 2 )
 104 NETGEN_2D_Parameters.SetNbSegPerRadius( 3 )
 105
 106 wall_faces = geompy.SubShapeAll(Wall, geompy.ShapeType["FACE"])
 107 wall_ids = geompy.GetSubShapesIDs(piquage, wall_faces)
 108
 109 NETGEN_3D = Mesh_1.Tetrahedron()
 110 Viscous_Layers_1 = NETGEN_3D.ViscousLayers(0.05,3,1.1,[],1,StdMeshersBuilder.SURF_OFFSET_SMOOTH)
 111 Viscous_Layers_1.SetTotalThickness( 0.05 )
 112 Viscous_Layers_1.SetNumberLayers( 3 )
 113 Viscous_Layers_1.SetStretchFactor( 1.1 )
 114 Viscous_Layers_1.SetMethod( StdMeshersBuilder.SURF_OFFSET_SMOOTH )
 115 Viscous_Layers_1.SetFaces( wall_ids, 0 )
 116
 117
 118 #isDone = Mesh_1.Compute()
 119 #Mesh_1.SplitVolumesIntoTetra( Mesh_1, 1 )
 120
 121 Outlet_1 = Mesh_1.GroupOnGeom(Outlet,'Outlet',SMESH.FACE)
 122 Wall_1 = Mesh_1.GroupOnGeom(Wall,'Wall',SMESH.FACE)
 123 Inlet_z_1 = Mesh_1.GroupOnGeom(Inlet_z,'Inlet_z',SMESH.FACE)
 124 Inlet_x_1 = Mesh_1.GroupOnGeom(Inlet_x,'Inlet_x',SMESH.FACE)
 125
 126 # Enforced mesh without layer
 127 # ===========================
 128
 129 Mesh_2 = smesh.Mesh(piquage, "Mesh_without_layer")
 130
 131 NETGEN_2D_1_1 = Mesh_2.Triangle(algo=smeshBuilder.NETGEN_1D2D)
 132 status = Mesh_2.AddHypothesis(NETGEN_2D_Parameters)
 133
 134 MG_Hybrid_2 = Mesh_2.Tetrahedron(algo=smeshBuilder.HYBRID)
 135 MG_Hybrid_Parameters_2 = MG_Hybrid_2.Parameters()
 136 MG_Hybrid_Parameters_2.SetLayersOnAllWrap( 0 )
 137 MG_Hybrid_Parameters_2.SetElementGeneration( 0 )
 138 #MG_Hybrid_Parameters_2.SetHeightFirstLayer( 0.01 )
 139 #MG_Hybrid_Parameters_2.SetBoundaryLayersProgression( 1.1 )
 140 #MG_Hybrid_Parameters_2.SetNbOfBoundaryLayers( 3 )
 141 MG_Hybrid_Parameters_2.SetEnforcedMeshWithGroup( Mesh_faces.GetMesh(), SMESH.FACE, "LayersGroup" )
 142 MG_Hybrid_Parameters_2.SetKeepFiles(1)
 143
 144 isDone = Mesh_2.Compute()
 145
 146 if not isDone:
 147   raise Exception("Error when computing Mesh_without_layer")
 148
 149 # Check that a group has been created with the enforced mesh
 150 assert len(Mesh_2.GetGroups()) == 1
 151 assert Mesh_2.GetGroups()[0].GetName() == 'LayersGroup'
 152 assert Mesh_2.GetGroups()[0].Size() > 0
 153
 154 # Enforced mesh with layers
 155 # =========================
 156
 157 Mesh_3 = smesh.Mesh(piquage, "Mesh_with_layer")
 158
 159 NETGEN_2D_1_1 = Mesh_3.Triangle(algo=smeshBuilder.NETGEN_1D2D)
 160 status = Mesh_3.AddHypothesis(NETGEN_2D_Parameters)
 161
 162 MG_Hybrid_3 = Mesh_3.Tetrahedron(algo=smeshBuilder.HYBRID)
 163 MG_Hybrid_Parameters_3 = MG_Hybrid_3.Parameters()
 164 MG_Hybrid_Parameters_3.SetLayersOnAllWrap( 0 )
 165 MG_Hybrid_Parameters_3.SetElementGeneration( 0 )
 166 MG_Hybrid_Parameters_3.SetHeightFirstLayer( 0.01 )
 167 MG_Hybrid_Parameters_3.SetBoundaryLayersProgression( 1.1 )
 168 MG_Hybrid_Parameters_3.SetNbOfBoundaryLayers( 3 )
 169 MG_Hybrid_Parameters_3.SetEnforcedMeshWithGroup( Mesh_faces.GetMesh(), SMESH.FACE, "LayersGroup" )
 170 MG_Hybrid_Parameters_3.SetKeepFiles(1)
 171 MG_Hybrid_3.SetFacesWithLayers( Wall )
 172
 173
 174 isDone = Mesh_3.Compute()
 175
 176 if not isDone:
 177   raise Exception("Error when computing Mesh_with_layer")
 178
 179 # Check that a group has been created with the enforced mesh
 180 assert len(Mesh_3.GetGroups()) == 1
 181 assert Mesh_3.GetGroups()[0].GetName() == 'LayersGroup'
 182 assert Mesh_3.GetGroups()[0].Size() > 0
 183