tests/layers_imprinting.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 geom_groups = [Inlet_x, Inlet_z, Outlet, Wall]
  69 d_geom_groups = {}
  70
  71 ###
  72 ### SMESH component
  73 ###
  74
  75 import  SMESH, SALOMEDS
  76 from salome.smesh import smeshBuilder
  77
  78 from salome.StdMeshers import StdMeshersBuilder
  79 from salome.HYBRIDPlugin import HYBRIDPluginBuilder
  80
  81 smesh = smeshBuilder.New()
  82
  83
  84 # Viscous layers without imprinting
  85 # =================================
  86
  87 Mesh_1 = smesh.Mesh(piquage, "Mesh_without_imprinting")
  88 NETGEN_2D = Mesh_1.Triangle(algo=smeshBuilder.NETGEN_1D2D)
  89 NETGEN_2D_Parameters = NETGEN_2D.Parameters()
  90
  91 NETGEN_2D_Parameters.SetMinSize( 0.01 )
  92 NETGEN_2D_Parameters.SetLocalSizeOnShape(corner, 0.01)
  93 NETGEN_2D_Parameters.SetFineness( 5 )
  94 NETGEN_2D_Parameters.SetGrowthRate( 0.1 )
  95 NETGEN_2D_Parameters.SetNbSegPerEdge( 2 )
  96 NETGEN_2D_Parameters.SetNbSegPerRadius( 3 )
  97
  98 wall_faces = geompy.SubShapeAll(Wall, geompy.ShapeType["FACE"])
  99 wall_ids = geompy.GetSubShapesIDs(piquage, wall_faces)
 100
 101 MG_Hybrid = Mesh_1.Tetrahedron(algo=smeshBuilder.HYBRID)
 102 MG_Hybrid_Parameters_1 = MG_Hybrid.Parameters()
 103 MG_Hybrid_Parameters_1.SetLayersOnAllWrap( 0 )
 104 MG_Hybrid_Parameters_1.SetElementGeneration( HYBRIDPluginBuilder.Generation_Tetra_Dominant )
 105 MG_Hybrid_Parameters_1.SetHeightFirstLayer( 0.01 )
 106 MG_Hybrid_Parameters_1.SetBoundaryLayersProgression( 1.1 )
 107 MG_Hybrid_Parameters_1.SetNbOfBoundaryLayers( 3 )
 108 MG_Hybrid_Parameters_1.SetFacesWithLayers( wall_ids )
 109
 110
 111 isDone = Mesh_1.Compute()
 112
 113 if not isDone:
 114   raise Exception("Error when computing Mesh_without_imprinting")
 115
 116 d_groups_1 = {}
 117
 118 for geom_group in geom_groups:
 119   name = geom_group.GetName()
 120   gr = Mesh_1.Group(geom_group)
 121   d_groups_1[name] = gr
 122   d_geom_groups[name] = geom_group
 123
 124 assert Mesh_1.NbQuadrangles() == 0
 125
 126 shape_volume = geompy.BasicProperties(piquage)[2]
 127
 128 # Compare whole mesh volume
 129 volume_error_1 = abs(shape_volume-Mesh_1.GetVolume())/shape_volume
 130
 131 assert volume_error_1 < 0.02
 132
 133 # Viscous layers with imprinting
 134 # ==============================
 135
 136 Mesh_2 = smesh.Mesh(piquage, "Mesh_with_imprinting")
 137
 138 NETGEN_2D_1_1 = Mesh_2.Triangle(algo=smeshBuilder.NETGEN_1D2D)
 139 status = Mesh_2.AddHypothesis(NETGEN_2D_Parameters)
 140
 141 Inlet_x_id, Inlet_z_id, Outlet_id = geompy.GetSubShapesIDs(piquage, [Inlet_x, Inlet_z, Outlet])
 142
 143 MG_Hybrid_2 = Mesh_2.Tetrahedron(algo=smeshBuilder.HYBRID)
 144 MG_Hybrid_Parameters_2 = MG_Hybrid_2.Parameters()
 145 MG_Hybrid_Parameters_2.SetLayersOnAllWrap( 0 )
 146 MG_Hybrid_Parameters_2.SetElementGeneration( HYBRIDPluginBuilder.Generation_Tetra_Dominant )
 147 MG_Hybrid_Parameters_2.SetHeightFirstLayer( 0.01 )
 148 MG_Hybrid_Parameters_2.SetBoundaryLayersProgression( 1.1 )
 149 MG_Hybrid_Parameters_2.SetNbOfBoundaryLayers( 3 )
 150 MG_Hybrid_Parameters_2.SetFacesWithLayers( wall_ids )
 151 MG_Hybrid_Parameters_2.SetFacesWithImprinting( [ Inlet_x_id, Inlet_z_id, Outlet_id ] )
 152
 153 isDone = Mesh_2.Compute()
 154
 155 if not isDone:
 156   raise Exception("Error when computing Mesh_with_imprinting")
 157
 158 assert Mesh_2.NbQuadrangles() > 0
 159
 160 d_groups_2 = {}
 161
 162 for geom_group in geom_groups:
 163   name = geom_group.GetName()
 164   gr = Mesh_2.Group(geom_group)
 165   d_groups_2[name] = gr
 166
 167 faces_imprinted = ["Inlet_x", "Inlet_z", "Outlet"]
 168
 169 # Check viscous layers with imprinting
 170 for name in faces_imprinted:
 171   geom_area = geompy.BasicProperties(d_geom_groups[name])[1]
 172   gr_1 = d_groups_1[name]
 173   gr_2 = d_groups_2[name]
 174   #assert gr_1.Size() > 0
 175   assert gr_2.Size() > 0
 176   # Nb of quadrangles is in 7th index of mesh info
 177   assert gr_2.GetMeshInfo()[7] > 0
 178
 179   # Compare mesh group and geom group
 180   area_error_1 = abs(geom_area-smesh.GetArea(gr_2))/geom_area
 181   assert area_error_1 < 0.025
 182   # Compare mesh group with imprinting and mesh group without imprinting
 183   area_error_2 = abs(smesh.GetArea(gr_1)-smesh.GetArea(gr_2))/smesh.GetArea(gr_1)
 184   assert area_error_2 < 1e-10
 185
 186 # Compare whole mesh volume
 187 mesh_2_volume = Mesh_2.GetVolume()
 188 volume_error_2 = abs(shape_volume-mesh_2_volume)/shape_volume
 189
 190 assert volume_error_2 < 0.02
 191
 192 # Viscous layers with imprinting set by groups
 193 # ============================================
 194
 195 Mesh_3 = smesh.Mesh(piquage, "Mesh_with_imprinting_set_by_groups")
 196
 197 NETGEN_2D_1_1 = Mesh_3.Triangle(algo=smeshBuilder.NETGEN_1D2D)
 198 status = Mesh_3.AddHypothesis(NETGEN_2D_Parameters)
 199
 200 MG_Hybrid_3 = Mesh_3.Tetrahedron(algo=smeshBuilder.HYBRID)
 201 MG_Hybrid_Parameters_3 = MG_Hybrid_3.Parameters()
 202 MG_Hybrid_Parameters_3.SetLayersOnAllWrap( 0 )
 203 MG_Hybrid_Parameters_3.SetElementGeneration( HYBRIDPluginBuilder.Generation_Tetra_Dominant )
 204 MG_Hybrid_Parameters_3.SetHeightFirstLayer( 0.01 )
 205 MG_Hybrid_Parameters_3.SetBoundaryLayersProgression( 1.1 )
 206 MG_Hybrid_Parameters_3.SetNbOfBoundaryLayers( 3 )
 207 MG_Hybrid_3.SetFacesWithLayers( Wall )
 208 MG_Hybrid_3.SetFacesWithImprinting( [ Inlet_x, Inlet_z, Outlet ] )
 209
 210 isDone = Mesh_3.Compute()
 211
 212 if not isDone:
 213   raise Exception("Error when computing Mesh_with_imprinting_set_by_groups")
 214
 215 d_groups_3 = {}
 216
 217 for geom_group in geom_groups:
 218   name = geom_group.GetName()
 219   gr = Mesh_3.Group(geom_group)
 220   d_groups_3[name] = gr
 221
 222 # Compare whole mesh volume
 223 mesh_3_volume = Mesh_3.GetVolume()
 224 volume_error_3 = abs(mesh_2_volume-mesh_3_volume)/mesh_2_volume
 225
 226 assert abs(mesh_3_volume-mesh_2_volume)/mesh_2_volume < 1e-10
 227
 228 # Check viscous layers with imprinting
 229 for name in faces_imprinted:
 230   gr_2 = d_groups_2[name]
 231   gr_3 = d_groups_3[name]
 232   assert gr_3.Size() > 0
 233   # Nb of quadrangles is in 7th index of mesh info
 234   assert gr_2.GetMeshInfo()[7] == gr_3.GetMeshInfo()[7]
 235
 236   # Compare mesh group with imprinting set by ids and mesh group with imprinting set by geom group
 237   area_error_3 = abs(smesh.GetArea(gr_2)-smesh.GetArea(gr_3))/smesh.GetArea(gr_2)
 238   assert area_error_3 < 1e-10
 239