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|
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 4.x |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object collapseDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
controlMeshQuality on;
collapseEdgesCoeffs
{
// Edges shorter than this absolute value will be merged
minimumEdgeLength 1e-6;
// The maximum angle between two edges that share a point attached to
// no other edges
maximumMergeAngle 180;
}
collapseFacesCoeffs
{
// The initial face length factor
initialFaceLengthFactor 0.5;
// If the face can't be collapsed to an edge, and it has a span less than
// the target face length multiplied by this coefficient, collapse it
// to a point.
maxCollapseFaceToPointSideLengthCoeff 0.3;
// Allow early collapse of edges to a point
allowEarlyCollapseToPoint on;
// Fraction to premultiply maxCollapseFaceToPointSideLengthCoeff by if
// allowEarlyCollapseToPoint is enabled
allowEarlyCollapseCoeff 0.2;
// Defining how close to the midpoint (M) of the projected
// vertices line a projected vertex (X) can be before making this
// an invalid edge collapse
//
// X---X-g----------------M----X-----------g----X--X
//
// Only allow a collapse if all projected vertices are outwith
// guardFraction (g) of the distance form the face centre to the
// furthest vertex in the considered direction
guardFraction 0.1;
}
controlMeshQualityCoeffs
{
// Name of the dictionary that has the mesh quality coefficients used
// by motionSmoother::checkMesh
#include "meshQualityDict";
// The amount that minimumEdgeLength will be reduced by for each
// edge if that edge's collapse generates a poor quality face
edgeReductionFactor 0.5;
// The amount that initialFaceLengthFactor will be reduced by for each
// face if its collapse generates a poor quality face
faceReductionFactor 0.5;
// Maximum number of smoothing iterations for the reductionFactors
maximumSmoothingIterations 2;
// Maximum number of outer iterations is mesh quality checking is enabled
maximumIterations 10;
// Maximum number of iterations deletion of a point can cause a bad face
// to be constructed before it is forced to not be deleted
maxPointErrorCount 3;
}
// ************************************************************************* //
|
