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Additional Hypotheses
Defining hypotheses

Functions

def ViscousLayers
 Defines "ViscousLayers" hypothesis to give parameters of layers of prisms to build near mesh boundary.
def Propagation
 Defines "Propagation" hypothesis that propagates all other hypotheses on all other edges that are at the opposite side in case of quadrangular faces.
def QuadraticMesh
 Defines "QuadraticMesh" hypothesis, forcing construction of quadratic edges.

Detailed Description

Function Documentation

def ViscousLayers (   self,
  thickness,
  numberOfLayers,
  stretchFactor,
  ignoreFaces = [] 
)

Defines "ViscousLayers" hypothesis to give parameters of layers of prisms to build near mesh boundary.

This hypothesis can be used by several 3D algorithms: NETGEN 3D, GHS3D, Hexahedron(i,j,k)

Parameters
thicknesstotal thickness of layers of prisms
numberOfLayersnumber of layers of prisms
stretchFactorfactor (>1.0) of growth of layer thickness towards inside of mesh
ignoreFaceslist of geometrical faces (or their ids) not to generate layers on

References Mesh_Algorithm.algo, Mesh_Algorithm.GetCompatibleHypothesis(), and Mesh_Algorithm.Hypothesis().

def Propagation (   self)

Defines "Propagation" hypothesis that propagates all other hypotheses on all other edges that are at the opposite side in case of quadrangular faces.

References Mesh_Algorithm.CompareEqualHyp(), and Mesh_Algorithm.Hypothesis().

def QuadraticMesh (   self)

Defines "QuadraticMesh" hypothesis, forcing construction of quadratic edges.

If the 2D mesher sees that all boundary edges are quadratic, it generates quadratic faces, else it generates linear faces using medium nodes as if they are vertices. The 3D mesher generates quadratic volumes only if all boundary faces are quadratic, else it fails.

References Mesh_Algorithm.CompareEqualHyp(), and Mesh_Algorithm.Hypothesis().

Copyright © 2007-2012 CEA/DEN, EDF R&D, OPEN CASCADE
Copyright © 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN, CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS