tests/layers_imprinting_hexa_core.py

   1 # -*- coding: utf-8 -*-
   2
   3 # This test is a known failure for MeshGems <= 2.4-5 (but must not crash Salome)
   4
   5 import sys
   6 import salome
   7
   8 salome.salome_init()
   9
  10 ###
  11 ### GEOM component
  12 ###
  13
  14 import GEOM
  15 from salome.geom import geomBuilder
  16 import math
  17 import SALOMEDS
  18
  19
  20 geompy = geomBuilder.New()
  21
  22 # first cylinder
  23 r1 = 0.5
  24 h1 = 5
  25
  26 # second cylinder
  27 r2 = 0.3
  28 h2 = 3
  29
  30 length_piquage = 1.5
  31
  32 O = geompy.MakeVertex(0, 0, 0)
  33 OX = geompy.MakeVectorDXDYDZ(1, 0, 0)
  34 OY = geompy.MakeVectorDXDYDZ(0, 1, 0)
  35 OZ = geompy.MakeVectorDXDYDZ(0, 0, 1)
  36 geompy.addToStudy( O, 'O' )
  37 geompy.addToStudy( OX, 'OX' )
  38 geompy.addToStudy( OY, 'OY' )
  39 geompy.addToStudy( OZ, 'OZ' )
  40
  41 Cylinder_1 = geompy.MakeCylinderRH(r1, h1)
  42 Cylinder_2 = geompy.MakeCylinderRH(r2, h2)
  43 Rotation_1 = geompy.MakeRotation(Cylinder_2, OY, -90*math.pi/180.0)
  44 Translation_1 = geompy.MakeTranslation(Rotation_1, 0, 0, length_piquage)
  45
  46 piquage = geompy.MakeFuseList([Cylinder_1, Translation_1], True, True)
  47 geompy.addToStudy( piquage, 'piquage' )
  48
  49 Inlet_z = geompy.GetFaceNearPoint(piquage, O)
  50 geompy.addToStudyInFather( piquage, Inlet_z, 'Inlet_z' )
  51
  52 p_inlet_x = geompy.MakeVertex(-h2, 0, length_piquage)
  53 Inlet_x = geompy.GetFaceNearPoint(piquage, p_inlet_x)
  54 geompy.addToStudyInFather( piquage, Inlet_x, 'Inlet_x' )
  55
  56 p_outlet = geompy.MakeVertex(0, 0, h1)
  57 Outlet = geompy.GetFaceNearPoint(piquage, p_outlet)
  58 geompy.addToStudyInFather( piquage, Outlet, 'Outlet' )
  59
  60 Wall = geompy.CreateGroup(piquage, geompy.ShapeType["FACE"])
  61 faces = geompy.SubShapeAll(piquage, geompy.ShapeType["FACE"])
  62 geompy.UnionList(Wall, faces)
  63 geompy.DifferenceList(Wall, [Inlet_x, Inlet_z, Outlet])
  64 geompy.addToStudyInFather( piquage, Wall, 'Wall' )
  65
  66 p_corner = geompy.MakeVertex(-r2, 0, length_piquage+r2)
  67 corner = geompy.GetVertexNearPoint(piquage, p_corner)
  68 geompy.addToStudyInFather( piquage, corner, 'corner' )
  69
  70 geom_groups = [Inlet_x, Inlet_z, Outlet, Wall]
  71 d_geom_groups = {}
  72
  73 ###
  74 ### SMESH component
  75 ###
  76
  77 import  SMESH, SALOMEDS
  78 from salome.smesh import smeshBuilder
  79
  80 from salome.StdMeshers import StdMeshersBuilder
  81 from salome.HYBRIDPlugin import HYBRIDPluginBuilder
  82
  83 smesh = smeshBuilder.New()
  84
  85 # Viscous layers with imprinting (hexa core)
  86 # ==========================================
  87
  88 Mesh_4 = smesh.Mesh(piquage, "Mesh_with_imprinting_hexa_core")
  89
  90 NETGEN_2D_1_1 = Mesh_4.Triangle(algo=smeshBuilder.NETGEN_1D2D)
  91 NETGEN_2D_Parameters = NETGEN_2D_1_1.Parameters()
  92
  93 NETGEN_2D_Parameters.SetMinSize( 0.01 )
  94 NETGEN_2D_Parameters.SetLocalSizeOnShape(corner, 0.01)
  95 NETGEN_2D_Parameters.SetFineness( 5 )
  96 NETGEN_2D_Parameters.SetGrowthRate( 0.1 )
  97 NETGEN_2D_Parameters.SetNbSegPerEdge( 2 )
  98 NETGEN_2D_Parameters.SetNbSegPerRadius( 3 )
  99
 100 wall_faces = geompy.SubShapeAll(Wall, geompy.ShapeType["FACE"])
 101 wall_ids = geompy.GetSubShapesIDs(piquage, wall_faces)
 102 Inlet_x_id, Inlet_z_id, Outlet_id = geompy.GetSubShapesIDs(piquage, [Inlet_x, Inlet_z, Outlet])
 103
 104 MG_Hybrid_4 = Mesh_4.Tetrahedron(algo=smeshBuilder.HYBRID)
 105 MG_Hybrid_Parameters_4 = MG_Hybrid_4.Parameters()
 106 MG_Hybrid_Parameters_4.SetLayersOnAllWrap( 0 )
 107 MG_Hybrid_Parameters_4.SetElementGeneration( HYBRIDPluginBuilder.Generation_Hexa_Dominant )
 108 MG_Hybrid_Parameters_4.SetHeightFirstLayer( 0.01 )
 109 MG_Hybrid_Parameters_4.SetBoundaryLayersProgression( 1.1 )
 110 MG_Hybrid_Parameters_4.SetNbOfBoundaryLayers( 3 )
 111 MG_Hybrid_Parameters_4.SetFacesWithLayers( wall_ids )
 112 MG_Hybrid_Parameters_4.SetFacesWithImprinting( [ Inlet_x_id, Inlet_z_id, Outlet_id ] )
 113
 114 isDone = Mesh_4.Compute()
 115
 116 if not isDone:
 117   raise Exception("Error when computing Mesh_with_imprinting_hexa_core")
 118
 119 assert Mesh_4.NbQuadrangles() > 0
 120
 121 d_groups_4 = {}
 122 d_geom_groups = {}
 123
 124 for geom_group in geom_groups:
 125   name = geom_group.GetName()
 126   gr = Mesh_4.Group(geom_group)
 127   d_groups_4[name] = gr
 128   d_geom_groups[name] = geom_group
 129
 130 # Compare whole mesh volume
 131 mesh_4_volume = Mesh_4.GetVolume()
 132 shape_volume = geompy.BasicProperties(piquage)[2]
 133 volume_error_4 = abs(shape_volume-mesh_4_volume)/shape_volume
 134
 135 assert volume_error_4 < 0.02
 136
 137 # Check viscous layers with imprinting
 138 faces_imprinted = ["Inlet_x", "Inlet_z", "Outlet"]
 139
 140 for name in faces_imprinted:
 141   gr_4 = d_groups_4[name]
 142   #assert gr_1.Size() > 0
 143   assert gr_4.Size() > 0
 144   # Nb of quadrangles is in 7th index of mesh info
 145   assert gr_4.GetMeshInfo()[7] > 0
 146
 147   # Compare mesh group and geom group
 148   geom_area = geompy.BasicProperties(d_geom_groups[name])[1]
 149   area_error_1 = abs(geom_area-smesh.GetArea(gr_4))/geom_area
 150   assert area_error_1 < 0.025
 151