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782 lines
21 KiB
Plaintext
782 lines
21 KiB
Plaintext
/*!
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\page tui_defining_hypotheses_page Defining Hypotheses and Algorithms
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This page provides example codes of \ref tui_defining_meshing_algos
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"defining algorithms" and hypotheses.
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<ul>
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<li>Wire discretisation 1D algorithm
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<ul>
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<li>\ref tui_1d_arithmetic "Arithmetic 1D" hypothesis</li>
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<li>\ref tui_deflection_1d "Deflection 1D and Number of Segments" hypotheses</li>
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<li>\ref tui_start_and_end_length "Start and End Length" hypotheses</li>
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<li>\ref tui_average_length "Local Length"</li>
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<li>\ref tui_propagation "Propagation" additional hypothesis </li>
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<li>\ref tui_fixed_points "Fixed Points 1D" hypothesis</li>
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</ul>
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</li>
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<li>Triangle (Mefisto) 2D algorithm
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<ul>
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<li>\ref tui_max_element_area "Max Element Area" hypothesis </li>
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<li>\ref tui_length_from_edges "Length from Edges"
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hypothesis </li>
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</ul>
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</li>
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<li>Tetrahedron (Netgen) 3D algorithm
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<ul>
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<li> \ref tui_max_element_volume "Max. Element Volume"hypothesis </li>
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<li> \ref tui_viscous_layers "Viscous layers"</li>
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</ul>
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</li>
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<li>\ref tui_projection "Projection Algorithms"</li>
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<li>\ref tui_radial_quadrangle "Radial Quadrangle 1D2D" algorithm</li>
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<li>Quadrangle (Mapping) 2D algorithm
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<ul>
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<li> \ref tui_quadrangle_parameters "Quadrangle Parameters" hypothesis </li>
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</ul>
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</li>
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<li>\ref tui_import "Use Existing Elements" algorithm</li>
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</ul>
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<br>
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<h2>Defining 1D Hypotheses</h2>
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<br>
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\anchor tui_1d_arithmetic
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<h3>Arithmetic 1D</h3>
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\code
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import geompy
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import smesh
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# create a box
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box = geompy.MakeBoxDXDYDZ(10., 10., 10.)
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geompy.addToStudy(box, "Box")
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# create a hexahedral mesh on the box
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hexa = smesh.Mesh(box, "Box : hexahedrical mesh")
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# create a Regular 1D algorithm for edges
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algo1D = hexa.Segment()
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# optionally reverse node distribution on certain edges
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allEdges = geompy.SubShapeAllSortedIDs( box, geompy.ShapeType["EDGE"])
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reversedEdges = [ allEdges[0], allEdges[4] ]
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# define "Arithmetic1D" hypothesis to cut all edges in several segments with increasing arithmetic length
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algo1D.Arithmetic1D(1, 4, reversedEdges)
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# create a quadrangle 2D algorithm for faces
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hexa.Quadrangle()
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# create a hexahedron 3D algorithm for solids
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hexa.Hexahedron()
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# compute the mesh
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hexa.Compute()
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\endcode
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<br>
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\anchor tui_deflection_1d
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<h3>Deflection 1D and Number of Segments</h3>
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\code
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import geompy
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import smesh
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# create a face from arc and straight segment
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px = geompy.MakeVertex(100., 0. , 0. )
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py = geompy.MakeVertex(0. , 100., 0. )
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pz = geompy.MakeVertex(0. , 0. , 100.)
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exy = geompy.MakeEdge(px, py)
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arc = geompy.MakeArc(py, pz, px)
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wire = geompy.MakeWire([exy, arc])
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isPlanarFace = 1
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face1 = geompy.MakeFace(wire, isPlanarFace)
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geompy.addToStudy(face1,"Face1")
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# get edges from the face
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e_straight,e_arc = geompy.SubShapeAll(face1, geompy.ShapeType["EDGE"])
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geompy.addToStudyInFather(face1, e_arc, "Arc Edge")
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# create hexahedral mesh
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hexa = smesh.Mesh(face1, "Face : triangle mesh")
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# define "NumberOfSegments" hypothesis to cut a straight edge in a fixed number of segments
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algo1D = hexa.Segment()
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algo1D.NumberOfSegments(6)
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# define "MaxElementArea" hypothesis
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algo2D = hexa.Triangle()
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algo2D.MaxElementArea(70.0)
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# define a local "Deflection1D" hypothesis on the arc
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algo_local = hexa.Segment(e_arc)
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algo_local.Deflection1D(1.0)
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# compute the mesh
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hexa.Compute()
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\endcode
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<br>
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\anchor tui_start_and_end_length
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<h3>Start and End Length</h3>
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\code
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from geompy import *
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import smesh
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# create a box
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box = MakeBoxDXDYDZ(10., 10., 10.)
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addToStudy(box, "Box")
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# get one edge of the box to put local hypothesis on
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p5 = MakeVertex(5., 0., 0.)
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EdgeX = GetEdgeNearPoint(box, p5)
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addToStudyInFather(box, EdgeX, "Edge [0,0,0 - 10,0,0]")
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# create a hexahedral mesh on the box
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hexa = smesh.Mesh(box, "Box : hexahedrical mesh")
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# set algorithms
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algo1D = hexa.Segment()
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hexa.Quadrangle()
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hexa.Hexahedron()
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# define "NumberOfSegments" hypothesis to cut an edge in a fixed number of segments
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algo1D.NumberOfSegments(4)
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# create a local hypothesis
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algo_local = hexa.Segment(EdgeX)
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# define "StartEndLength" hypothesis to cut an edge in several segments with increasing geometric length
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algo_local.StartEndLength(1, 6)
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# define "Propagation" hypothesis that propagates all other hypothesis
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# on all edges on the opposite side in case of quadrangular faces
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algo_local.Propagation()
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# compute the mesh
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hexa.Compute()
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\endcode
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<br>
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\anchor tui_average_length
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<h3>Local Length</h3>
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\code
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from geompy import *
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import smesh
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# create a box
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box = MakeBoxDXDYDZ(10., 10., 10.)
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addToStudy(box, "Box")
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# get one edge of the box to put local hypothesis on
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p5 = MakeVertex(5., 0., 0.)
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EdgeX = GetEdgeNearPoint(box, p5)
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addToStudyInFather(box, EdgeX, "Edge [0,0,0 - 10,0,0]")
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# create a hexahedral mesh on the box
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hexa = smesh.Mesh(box, "Box : hexahedrical mesh")
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# set algorithms
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algo1D = hexa.Segment()
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hexa.Quadrangle()
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hexa.Hexahedron()
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# define "NumberOfSegments" hypothesis to cut all edges in a fixed number of segments
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algo1D.NumberOfSegments(4)
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# create a sub-mesh
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algo_local = hexa.Segment(EdgeX)
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# define "LocalLength" hypothesis to cut an edge in several segments with the same length
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algo_local.LocalLength(2.)
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# define "Propagation" hypothesis that propagates all other hypothesis
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# on all edges on the opposite side in case of quadrangular faces
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algo_local.Propagation()
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# compute the mesh
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hexa.Compute()
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\endcode
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<br><h2>Defining 2D and 3D hypotheses</h2>
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<br>
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\anchor tui_max_element_area
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<h3>Maximum Element Area</h3>
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\code
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import geompy
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import smesh
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import salome
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# create a face
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px = geompy.MakeVertex(100., 0. , 0. )
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py = geompy.MakeVertex(0. , 100., 0. )
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pz = geompy.MakeVertex(0. , 0. , 100.)
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vxy = geompy.MakeVector(px, py)
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arc = geompy.MakeArc(py, pz, px)
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wire = geompy.MakeWire([vxy, arc])
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isPlanarFace = 1
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face = geompy.MakeFace(wire, isPlanarFace)
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# add the face in the study
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id_face = geompy.addToStudy(face, "Face to be meshed")
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# create a mesh
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tria_mesh = smesh.Mesh(face, "Face : triangulation")
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# define 1D meshing:
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algo = tria_mesh.Segment()
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algo.NumberOfSegments(20)
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# define 2D meshing:
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# assign triangulation algorithm
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algo = tria_mesh.Triangle()
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# apply "Max Element Area" hypothesis to each triangle
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algo.MaxElementArea(100)
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# compute the mesh
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tria_mesh.Compute()
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\endcode
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<br>
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\anchor tui_max_element_volume
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<h3>Maximum Element Volume</h3>
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\code
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import geompy
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import smesh
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# create a cylinder
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cyl = geompy.MakeCylinderRH(30., 50.)
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geompy.addToStudy(cyl, "cyl")
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# create a mesh on the cylinder
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tetra = smesh.Mesh(cyl, "Cylinder : tetrahedrical mesh")
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# assign algorithms
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algo1D = tetra.Segment()
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algo2D = tetra.Triangle()
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algo3D = tetra.Tetrahedron()
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# assign 1D and 2D hypotheses
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algo1D.NumberOfSegments(7)
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algo2D.MaxElementArea(150.)
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# assign Max Element Volume hypothesis
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algo3D.MaxElementVolume(200.)
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# compute the mesh
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ret = tetra.Compute()
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if ret == 0:
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print "probleme when computing the mesh"
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else:
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print "Computation succeded"
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\endcode
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<br>
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\anchor tui_length_from_edges
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<h3>Length from Edges</h3>
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\code
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import geompy
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import smesh
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# create sketchers
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sketcher1 = geompy.MakeSketcher("Sketcher:F 0 0:TT 70 0:TT 70 70:TT 0 70:WW")
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sketcher2 = geompy.MakeSketcher("Sketcher:F 20 20:TT 50 20:TT 50 50:TT 20 50:WW")
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# create a face from two wires
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isPlanarFace = 1
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face1 = geompy.MakeFaces([sketcher1, sketcher2], isPlanarFace)
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geompy.addToStudy(face1, "Face1")
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# create a mesh
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tria = smesh.Mesh(face1, "Face : triangle 2D mesh")
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# Define 1D meshing
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algo1D = tria.Segment()
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algo1D.NumberOfSegments(2)
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# create and assign the algorithm for 2D meshing with triangles
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algo2D = tria.Triangle()
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# create and assign "LengthFromEdges" hypothesis to build triangles based on the length of the edges taken from the wire
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algo2D.LengthFromEdges()
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# compute the mesh
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tria.Compute()
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\endcode
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<br><h2>Defining Additional Hypotheses</h2>
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<br>
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\anchor tui_propagation
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<h3>Propagation</h3>
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\code
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from geompy import *
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import smesh
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# create a box
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box = MakeBoxDXDYDZ(10., 10., 10.)
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addToStudy(box, "Box")
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# get one edge of the box to put local hypothesis on
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p5 = MakeVertex(5., 0., 0.)
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EdgeX = GetEdgeNearPoint(box, p5)
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addToStudyInFather(box, EdgeX, "Edge [0,0,0 - 10,0,0]")
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# create a hexahedral mesh on the box
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hexa = smesh.Mesh(box, "Box : hexahedrical mesh")
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# set global algorithms and hypotheses
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algo1D = hexa.Segment()
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hexa.Quadrangle()
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hexa.Hexahedron()
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algo1D.NumberOfSegments(4)
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# create a sub-mesh with local 1D hypothesis and propagation
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algo_local = hexa.Segment(EdgeX)
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# define "Arithmetic1D" hypothesis to cut an edge in several segments with increasing length
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algo_local.Arithmetic1D(1, 4)
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# define "Propagation" hypothesis that propagates all other 1D hypotheses
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# from all edges on the opposite side of a face in case of quadrangular faces
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algo_local.Propagation()
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# compute the mesh
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hexa.Compute()
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\endcode
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<br>
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\anchor tui_defining_meshing_algos
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<h2>Defining Meshing Algorithms</h2>
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\code
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import geompy
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import smesh
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# create a box
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box = geompy.MakeBoxDXDYDZ(10., 10., 10.)
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geompy.addToStudy(box, "Box")
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# 1. Create a hexahedral mesh on the box
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hexa = smesh.Mesh(box, "Box : hexahedrical mesh")
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# create a Regular 1D algorithm for edges
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algo1D = hexa.Segment()
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# create a quadrangle 2D algorithm for faces
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algo2D = hexa.Quadrangle()
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# create a hexahedron 3D algorithm for solids
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algo3D = hexa.Hexahedron()
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# define hypotheses
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algo1D.Arithmetic1D(1, 4)
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# compute the mesh
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hexa.Compute()
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# 2. Create a tetrahedral mesh on the box
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tetra = smesh.Mesh(box, "Box : tetrahedrical mesh")
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# create a Regular 1D algorithm for edges
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algo1D = tetra.Segment()
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# create a Mefisto 2D algorithm for faces
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algo2D = tetra.Triangle()
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# create a 3D algorithm for solids
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algo3D = tetra.Tetrahedron()
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# define hypotheses
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algo1D.Arithmetic1D(1, 4)
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algo2D.LengthFromEdges()
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# compute the mesh
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tetra.Compute()
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\endcode
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<br>
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\anchor tui_projection
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<h3>Projection Algorithms</h3>
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\code
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# Project prisms from one meshed box to another mesh on the same box
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from smesh import *
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# Prepare geometry
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# Create a parallelepiped
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box = geompy.MakeBoxDXDYDZ(200, 100, 70)
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geompy.addToStudy( box, "box" )
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# Get geom faces to mesh with triangles in the 1ts and 2nd meshes
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faces = geompy.SubShapeAll(box, geompy.ShapeType["FACE"])
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# 2 adjacent faces of the box
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f1 = faces[2]
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f2 = faces[0]
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# face opposite to f2
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f2opp = faces[1]
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# Get vertices used to specify how to associate sides of faces at projection
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[v1F1, v2F1] = geompy.SubShapeAll(f1, geompy.ShapeType["VERTEX"])[:2]
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[v1F2, v2F2] = geompy.SubShapeAll(f2, geompy.ShapeType["VERTEX"])[:2]
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geompy.addToStudyInFather( box, v1F1, "v1F1" )
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geompy.addToStudyInFather( box, v2F1, "v2F1" )
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geompy.addToStudyInFather( box, v1F2, "v1F2" )
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geompy.addToStudyInFather( box, v2F2, "v2F2" )
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# Make group of 3 edges of f1 and f2
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edgesF1 = geompy.CreateGroup(f1, geompy.ShapeType["EDGE"])
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geompy.UnionList( edgesF1, geompy.SubShapeAll(f1, geompy.ShapeType["EDGE"])[:3])
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edgesF2 = geompy.CreateGroup(f2, geompy.ShapeType["EDGE"])
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geompy.UnionList( edgesF2, geompy.SubShapeAll(f2, geompy.ShapeType["EDGE"])[:3])
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geompy.addToStudyInFather( box, edgesF1, "edgesF1" )
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geompy.addToStudyInFather( box, edgesF2, "edgesF2" )
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# Make the source mesh with prisms
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src_mesh = Mesh(box, "Source mesh")
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src_mesh.Segment().NumberOfSegments(9,10)
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src_mesh.Quadrangle()
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src_mesh.Hexahedron()
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src_mesh.Triangle(f1) # triangular sumbesh
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src_mesh.Compute()
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# Mesh the box using projection algoritms
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# Define the same global 1D and 2D hypotheses
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tgt_mesh = Mesh(box, "Target mesh")
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tgt_mesh.Segment().NumberOfSegments(9,10,UseExisting=True)
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tgt_mesh.Quadrangle()
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# Define Projection 1D algorithm to project 1d mesh elements from group edgesF2 to edgesF1
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# It is actually not needed, just a demonstration
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proj1D = tgt_mesh.Projection1D( edgesF1 )
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# each vertex must be at the end of a connected group of edges (or a sole edge)
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proj1D.SourceEdge( edgesF2, src_mesh, v2F1, v2F2 )
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# Define 2D hypotheses to project triangles from f1 face of the source mesh to
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# f2 face in the target mesh. Vertices specify how to associate sides of faces
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proj2D = tgt_mesh.Projection2D( f2 )
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proj2D.SourceFace( f1, src_mesh, v1F1, v1F2, v2F1, v2F2 )
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# 2D hypotheses to project triangles from f2 of target mesh to the face opposite to f2.
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# Association of face sides is default
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proj2D = tgt_mesh.Projection2D( f2opp )
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proj2D.SourceFace( f2 )
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# 3D hypotheses to project prisms from the source to the target mesh
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proj3D = tgt_mesh.Projection3D()
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proj3D.SourceShape3D( box, src_mesh, v1F1, v1F2, v2F1, v2F2 )
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tgt_mesh.Compute()
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# Move the source mesh to visualy compare the two meshes
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src_mesh.TranslateObject( src_mesh, MakeDirStruct( 210, 0, 0 ), Copy=False)
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\endcode
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<h3>Projection 1D2D</h3>
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\code
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# Project triangles from one meshed face to another mesh on the same box
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from smesh import *
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# Prepare geometry
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# Create a box
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box = geompy.MakeBoxDXDYDZ(100, 100, 100)
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# Get geom faces to mesh with triangles in the 1ts and 2nd meshes
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faces = geompy.SubShapeAll(box, geompy.ShapeType["FACE"])
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# 2 adjacent faces of the box
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Face_1 = faces[2]
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Face_2 = faces[0]
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|
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geompy.addToStudy( box, 'box' )
|
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geompy.addToStudyInFather( box, Face_1, 'Face_1' )
|
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geompy.addToStudyInFather( box, Face_2, 'Face_2' )
|
|
|
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# Make the source mesh with Netgem2D
|
|
src_mesh = Mesh(Face_1, "Source mesh")
|
|
src_mesh.Segment().NumberOfSegments(15)
|
|
src_mesh.Triangle()
|
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src_mesh.Compute()
|
|
|
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# Mesh the target mesh using the algoritm Projection1D2D
|
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tgt_mesh = smesh.Mesh(Face_2, "Target mesh")
|
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tgt_mesh.Projection1D2D().SourceFace(Face_1,src_mesh)
|
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tgt_mesh.Compute()
|
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\endcode
|
|
|
|
<br>
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\anchor tui_fixed_points
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|
|
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<h2>1D Mesh with Fixed Points example</h2>
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|
|
|
\code
|
|
import salome
|
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import geompy
|
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import smesh
|
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import StdMeshers
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|
|
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# Create face and explode it on edges
|
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face = geompy.MakeFaceHW(100, 100, 1)
|
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edges = geompy.SubShapeAllSorted(face, geompy.ShapeType["EDGE"])
|
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geompy.addToStudy( face, "Face" )
|
|
|
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# get the first edge from exploded result
|
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edge1 = geompy.GetSubShapeID(face, edges[0])
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|
|
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# Define Mesh on previously created face
|
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Mesh_1 = smesh.Mesh(face)
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|
|
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# Create Fixed Point 1D hypothesis and define parameters.
|
|
# Note: values greater than 1.0 and less than 0.0 are not taken into account;
|
|
# duplicated values are removed. Also, if not specified explicitly, values 0.0 and 1.0
|
|
# add added automatically.
|
|
# The number of segments should correspond to the number of points (NbSeg = NbPnt-1);
|
|
# extra values of segments splitting parameter are not taken into account,
|
|
# while missing values are considered to be equal to 1.
|
|
Fixed_points_1D_1 = smesh.CreateHypothesis('FixedPoints1D')
|
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Fixed_points_1D_1.SetPoints( [ 1.1, 0.9, 0.5, 0.0, 0.5, -0.3 ] )
|
|
Fixed_points_1D_1.SetNbSegments( [ 3, 1, 2 ] )
|
|
Fixed_points_1D_1.SetReversedEdges( [edge1] )
|
|
|
|
# Add hypothesis to mesh and define 2D parameters
|
|
Mesh_1.AddHypothesis(Fixed_points_1D_1)
|
|
Regular_1D = Mesh_1.Segment()
|
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Quadrangle_2D = Mesh_1.Quadrangle()
|
|
# Compute mesh
|
|
Mesh_1.Compute()
|
|
\endcode
|
|
|
|
\anchor tui_radial_quadrangle
|
|
<h2> Radial Quadrangle 1D2D example </h2>
|
|
\code
|
|
from smesh import *
|
|
|
|
SetCurrentStudy(salome.myStudy)
|
|
|
|
# Create face from the wire and add to study
|
|
Face = geompy.MakeSketcher("Sketcher:F 0 0:TT 20 0:R 90:C 20 90:WF", [0, 0, 0, 1, 0, 0, 0, 0, 1])
|
|
geompy.addToStudy(Face,"Face")
|
|
edges = geompy.SubShapeAllSorted(Face, geompy.ShapeType["EDGE"])
|
|
circle, radius1, radius2 = edges
|
|
geompy.addToStudyInFather(Face, radius1,"radius1")
|
|
geompy.addToStudyInFather(Face, radius2,"radius2")
|
|
geompy.addToStudyInFather(Face, circle,"circle")
|
|
|
|
|
|
# Define geometry for mesh, and Radial Quadrange algorithm
|
|
mesh = smesh.Mesh(Face)
|
|
radial_Quad_algo = mesh.Quadrangle(algo=RADIAL_QUAD)
|
|
|
|
# The Radial Quadrange algorithm can work without any hypothesis
|
|
# In this case it uses "Default Nb of Segments" preferences parameter to discretize edges
|
|
mesh.Compute()
|
|
|
|
# The Radial Quadrange uses global or local 1d hypotheses if it does
|
|
# not have its own hypotheses.
|
|
# Define global hypotheses to discretize radial edges and a local one for circular edge
|
|
global_Nb_Segments = mesh.Segment().NumberOfSegments(5)
|
|
local_Nb_Segments = mesh.Segment(circle).NumberOfSegments(10)
|
|
mesh.Compute()
|
|
|
|
# Define own parameters of Radial Quadrange algorithm
|
|
radial_Quad_algo.NumberOfLayers( 4 )
|
|
mesh.Compute()
|
|
\endcode
|
|
|
|
\anchor tui_quadrangle_parameters
|
|
<h2>Quadrangle Parameters example 1 (meshing a face with 3 edges) </h2>
|
|
\code
|
|
from smesh import *
|
|
SetCurrentStudy(salome.myStudy)
|
|
|
|
# Get 1/4 part from the disk face.
|
|
Box_1 = geompy.MakeBoxDXDYDZ(100, 100, 100)
|
|
Disk_1 = geompy.MakeDiskR(100, 1)
|
|
Common_1 = geompy.MakeCommon(Disk_1, Box_1)
|
|
geompy.addToStudy( Disk_1, "Disk_1" )
|
|
geompy.addToStudy( Box_1, "Box_1" )
|
|
geompy.addToStudy( Common_1, "Common_1" )
|
|
|
|
# Set the Geometry for meshing
|
|
Mesh_1 = smesh.Mesh(Common_1)
|
|
|
|
|
|
# Define 1D hypothesis and compute the mesh
|
|
Regular_1D = Mesh_1.Segment()
|
|
Nb_Segments_1 = Regular_1D.NumberOfSegments(10)
|
|
Nb_Segments_1.SetDistrType( 0 )
|
|
|
|
# Create Quadrangle parameters and define the Base Vertex.
|
|
Quadrangle_2D = Mesh_1.Quadrangle().TriangleVertex( 8 )
|
|
|
|
Mesh_1.Compute()
|
|
\endcode
|
|
|
|
<h2>Quadrangle Parameters example 2 (using different types) </h2>
|
|
\code
|
|
import geompy
|
|
import smesh
|
|
import StdMeshers
|
|
|
|
# Make quadrangle face and explode it on edges.
|
|
Vertex_1 = geompy.MakeVertex(0, 0, 0)
|
|
Vertex_2 = geompy.MakeVertex(40, 0, 0)
|
|
Vertex_3 = geompy.MakeVertex(40, 30, 0)
|
|
Vertex_4 = geompy.MakeVertex(0, 30, 0)
|
|
Quadrangle_Face_1 = geompy.MakeQuad4Vertices(Vertex_1, Vertex_4, Vertex_3, Vertex_2)
|
|
[Edge_1,Edge_2,Edge_3,Edge_4] = geompy.SubShapeAllSorted(Quadrangle_Face_1, geompy.ShapeType["EDGE"])
|
|
geompy.addToStudy( Vertex_1, "Vertex_1" )
|
|
geompy.addToStudy( Vertex_2, "Vertex_2" )
|
|
geompy.addToStudy( Vertex_3, "Vertex_3" )
|
|
geompy.addToStudy( Vertex_4, "Vertex_4" )
|
|
geompy.addToStudy( Quadrangle_Face_1, "Quadrangle Face_1" )
|
|
geompy.addToStudyInFather( Quadrangle_Face_1, Edge_2, "Edge_2" )
|
|
|
|
# Set the Geometry for meshing
|
|
Mesh_1 = smesh.Mesh(Quadrangle_Face_1)
|
|
|
|
# Create Quadrangle parameters and
|
|
# define the Type as Quadrangle Preference
|
|
Quadrangle_Parameters_1 = smesh.CreateHypothesis('QuadrangleParams')
|
|
Quadrangle_Parameters_1.SetQuadType( StdMeshers.QUAD_QUADRANGLE_PREF )
|
|
|
|
# Define other hypotheses and algorithms
|
|
Regular_1D = Mesh_1.Segment()
|
|
Nb_Segments_1 = Regular_1D.NumberOfSegments(4)
|
|
Nb_Segments_1.SetDistrType( 0 )
|
|
status = Mesh_1.AddHypothesis(Quadrangle_Parameters_1)
|
|
Quadrangle_2D = Mesh_1.Quadrangle()
|
|
|
|
# Define submesh on one edge to provide different number of segments
|
|
Regular_1D_1 = Mesh_1.Segment(geom=Edge_2)
|
|
Nb_Segments_2 = Regular_1D_1.NumberOfSegments(10)
|
|
Nb_Segments_2.SetDistrType( 0 )
|
|
SubMesh_1 = Regular_1D_1.GetSubMesh()
|
|
|
|
# Compute mesh (with Quadrangle Preference type)
|
|
isDone = Mesh_1.Compute()
|
|
|
|
# Change type to Reduced and compute again
|
|
Quadrangle_Parameters_1.SetQuadType( StdMeshers.QUAD_REDUCED )
|
|
isDone = Mesh_1.Compute()
|
|
\endcode
|
|
|
|
\anchor tui_import
|
|
<h2>"Use Existing Elements" example </h2>
|
|
\code
|
|
|
|
from smesh import *
|
|
SetCurrentStudy(salome.myStudy)
|
|
|
|
# Make a patritioned box
|
|
|
|
box = geompy.MakeBoxDXDYDZ(100,100,100)
|
|
|
|
N = geompy.MakeVectorDXDYDZ( 1,0,0 )
|
|
O = geompy.MakeVertex( 50,0,0 )
|
|
plane = geompy.MakePlane( O, N, 200 ) # plane YOZ
|
|
|
|
shape2boxes = geompy.MakeHalfPartition( box, plane )
|
|
boxes = geompy.SubShapeAllSorted(shape2boxes, geompy.ShapeType["SOLID"])
|
|
|
|
geompy.addToStudy( boxes[0], "boxes[0]")
|
|
geompy.addToStudy( boxes[1], "boxes[1]")
|
|
midFace0 = geompy.SubShapeAllSorted(boxes[0], geompy.ShapeType["FACE"])[5]
|
|
geompy.addToStudyInFather( boxes[0], midFace0, "middle Face")
|
|
midFace1 = geompy.SubShapeAllSorted(boxes[1], geompy.ShapeType["FACE"])[0]
|
|
geompy.addToStudyInFather( boxes[1], midFace1, "middle Face")
|
|
|
|
# Mesh one of boxes with quadrangles. It is a source mesh
|
|
|
|
srcMesh = Mesh(boxes[0], "source mesh") # box coloser to CS origin
|
|
nSeg1 = srcMesh.Segment().NumberOfSegments(4)
|
|
srcMesh.Quadrangle()
|
|
srcMesh.Compute()
|
|
srcFaceGroup = srcMesh.GroupOnGeom( midFace0, "src faces", FACE )
|
|
|
|
# Import faces from midFace0 to the target mesh
|
|
|
|
tgtMesh = Mesh(boxes[1], "target mesh")
|
|
importAlgo = tgtMesh.UseExisting2DElements(midFace1)
|
|
import2hyp = importAlgo.SourceFaces( [srcFaceGroup] )
|
|
tgtMesh.Segment().NumberOfSegments(3)
|
|
tgtMesh.Quadrangle()
|
|
tgtMesh.Compute()
|
|
|
|
# Import the whole source mesh with groups
|
|
import2hyp.SetCopySourceMesh(True,True)
|
|
tgtMesh.Compute()
|
|
\endcode
|
|
|
|
\anchor tui_viscous_layers
|
|
<h2>Viscous layers construction</h2>
|
|
|
|
\code
|
|
from smesh import *
|
|
SetCurrentStudy(salome.myStudy)
|
|
|
|
X = geompy.MakeVectorDXDYDZ( 1,0,0 )
|
|
O = geompy.MakeVertex( 100,50,50 )
|
|
plane = geompy.MakePlane( O, X, 200 ) # plane YZ
|
|
|
|
box = geompy.MakeBoxDXDYDZ(200,100,100)
|
|
|
|
shape = geompy.MakeHalfPartition( box, plane )
|
|
|
|
faces = geompy.SubShapeAllSorted(shape, geompy.ShapeType["FACE"])
|
|
face1 = faces[1]
|
|
ignoreFaces = [ faces[0], faces[-1]]
|
|
|
|
geompy.addToStudy( shape, "shape" )
|
|
geompy.addToStudyInFather( shape, face1, "face1")
|
|
|
|
|
|
mesh = Mesh(shape, "CFD")
|
|
|
|
mesh.Segment().NumberOfSegments( 4 )
|
|
|
|
mesh.Triangle()
|
|
mesh.Quadrangle(face1)
|
|
mesh.Compute()
|
|
algo3D = mesh.Tetrahedron()
|
|
|
|
thickness = 20
|
|
numberOfLayers = 10
|
|
stretchFactor = 1.5
|
|
layersHyp = algo3D.ViscousLayers(thickness,numberOfLayers,stretchFactor,ignoreFaces)
|
|
|
|
mesh.Compute()
|
|
|
|
mesh.MakeGroup("Tetras",VOLUME,FT_ElemGeomType,"=",Geom_TETRA)
|
|
mesh.MakeGroup("Pyras",VOLUME,FT_ElemGeomType,"=",Geom_PYRAMID)
|
|
mesh.MakeGroup("Prims",VOLUME,FT_ElemGeomType,"=",Geom_PENTA)
|
|
|
|
\endcode
|
|
|
|
*/
|