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0020431: EDF 1020 SMESH : Radial Mesh of a cylinder

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* Algorith behavior has changed - default hyps have appeared
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eap 2010-01-22 11:29:12 +00:00
parent 909e9e40a7
commit a1802ee5a4
2 changed files with 31 additions and 17 deletions
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9
doc/salome/gui/SMESH/input/radial_quadrangle_1D2D_algo.doc
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@ -8,9 +8,16 @@ following conditions: the face must be a full circle or a part of circle
The resulting mesh consists of triangles (near the center point) and The resulting mesh consists of triangles (near the center point) and
quadrangles. quadrangles.
This algorithm requires the hypothesis indicating the number This algorithm is optionally parametrized by the hypothesis indicating the number
of mesh layers along the radius. The distribution of layers can be set with any 1D Hypothesis. of mesh layers along the radius. The distribution of layers can be set with any 1D Hypothesis.
If no own hypothesis of the algorithm is assigned, any local or global hypothesis is used
by the algorithm to discretize edges. Note that if the geometrical face has two radial edges,
they must be meshed with equal number of segments.
If no 1D hypothesis is assigned to an edge, "Default Number of Segments" preferences parameter
is used to discretize the edge.
\image html hypo_radquad_dlg.png \image html hypo_radquad_dlg.png
\image html mesh_radquad_01.png "Radial Quadrangle 2D mesh on the top and the bottom faces of a cylinder" \image html mesh_radquad_01.png "Radial Quadrangle 2D mesh on the top and the bottom faces of a cylinder"

39
doc/salome/gui/SMESH/input/tui_defining_hypotheses.doc
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@ -514,29 +514,36 @@ Mesh_1.Compute()
\anchor tui_radial_quadrangle \anchor tui_radial_quadrangle
<h2> Radial Quadrangle 1D2D example </h2> <h2> Radial Quadrangle 1D2D example </h2>
\code \code
import salome from smesh import *
import geompy
import smesh SetCurrentStudy(salome.myStudy)
import StdMeshers
# Create face from the wire and add to study # Create face from the wire and add to study
WirePath = geompy.MakeSketcher("Sketcher:F 0 0:TT 20 0:R 90:C 20 90:WW", [0, 0, 0, 1, 0, 0, 0, 0, 1]) 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])
Face = geompy.MakeFace(WirePath,1)
geompy.addToStudy(Face,"Face") 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 1D parameters
# Define geometry for mesh, and Radial Quadrange algorithm
mesh = smesh.Mesh(Face) mesh = smesh.Mesh(Face)
Wire_discretisation = mesh.Segment() radial_Quad_algo = mesh.Quadrangle(algo=RADIAL_QUAD)
Nb_Segments = Wire_discretisation.NumberOfSegments(5)
Nb_Segments.SetDistrType( 0 )
# Define 2D parameters and Radial Quadrange hypothesis # The Radial Quadrange algorithm can work without any hypothesis
Number_of_Layers = smesh.CreateHypothesis('NumberOfLayers2D') # In this case it uses "Default Nb of Segments" preferences parameter to discretize edges
Number_of_Layers.SetNumberOfLayers( 4 ) mesh.Compute()
mesh.AddHypothesis(Number_of_Layers)
RadialQuadrangle_1D2D = smesh.CreateHypothesis('RadialQuadrangle_1D2D')
mesh.AddHypothesis(RadialQuadrangle_1D2D)
# The Radial Quadrange uses global or local 1d hypotheses if no its own hypotheses assigned.
# 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() mesh.Compute()
\endcode \endcode