import salome
from salome.geom import geomBuilder
-import SMESH
+import SMESH, StdMeshers
## The base class to define meshing algorithms
#
# the value of \a isFacesToIgnore parameter.
# @param isFacesToIgnore if \c True, the Viscous layers are not generated on the
# faces specified by the previous parameter (\a faces).
+ # @param extrMethod extrusion method defines how position of nodes are found during
+ # prism construction and how creation of distorted and intersecting prisms is
+ # prevented. Possible values are:
+ # - StdMeshers.SURF_OFFSET_SMOOTH (default) method extrudes nodes along normal
+ # to underlying geometrical surface. Smoothing of internal surface of
+ # element layers can be used to avoid creation of invalid prisms.
+ # - StdMeshers.FACE_OFFSET method extrudes nodes along average normal of
+ # surrounding mesh faces till intersection with a neighbor mesh face
+ # translated along its own normal by the layers thickness. Thickness
+ # of layers can be limited to avoid creation of invalid prisms.
+ # - StdMeshers.NODE_OFFSET method extrudes nodes along average normal of
+ # surrounding mesh faces by the layers thickness. Thickness of
+ # layers can be limited to avoid creation of invalid prisms.
# @ingroup l3_hypos_additi
def ViscousLayers(self, thickness, numberOfLayers, stretchFactor,
- faces=[], isFacesToIgnore=True ):
+ faces=[], isFacesToIgnore=True, extrMethod=StdMeshers.SURF_OFFSET_SMOOTH ):
if not isinstance(self.algo, SMESH._objref_SMESH_3D_Algo):
raise TypeError, "ViscousLayers are supported by 3D algorithms only"
if not "ViscousLayers" in self.GetCompatibleHypothesis():
hyp = self.Hypothesis("ViscousLayers",
[thickness, numberOfLayers, stretchFactor, faces, isFacesToIgnore],
toAdd=False)
- hyp.SetTotalThickness(thickness)
- hyp.SetNumberLayers(numberOfLayers)
- hyp.SetStretchFactor(stretchFactor)
- hyp.SetFaces(faces, isFacesToIgnore)
+ hyp.SetTotalThickness( thickness )
+ hyp.SetNumberLayers( numberOfLayers )
+ hyp.SetStretchFactor( stretchFactor )
+ hyp.SetFaces( faces, isFacesToIgnore )
+ hyp.SetMethod( extrMethod )
self.mesh.AddHypothesis( hyp, self.geom )
return hyp
