86 lines
3.0 KiB
C++
86 lines
3.0 KiB
C++
/*--------------------------------*- C++ -*----------------------------------*\
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| ========= | |
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| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
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| \\ / O peration | Version: v2412 |
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| \\ / A nd | Website: www.openfoam.com |
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| \\/ M anipulation | |
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\*---------------------------------------------------------------------------*/
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FoamFile
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{
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version 2.0;
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format ascii;
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class dictionary;
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object collapseDict;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// If on, after collapsing check the quality of the mesh. If bad faces are
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// generated then redo the collapsing with stricter filtering.
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controlMeshQuality on;
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collapseEdgesCoeffs
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{
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// Edges shorter than this absolute value will be merged
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minimumEdgeLength 1e-6;
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// The maximum angle between two edges that share a point attached to
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// no other edges
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maximumMergeAngle 180;
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}
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collapseFacesCoeffs
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{
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// The initial face length factor
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initialFaceLengthFactor 0.35;
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// If the face can't be collapsed to an edge, and it has a span less than
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// the target face length multiplied by this coefficient, collapse it
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// to a point.
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maxCollapseFaceToPointSideLengthCoeff 0.3;
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// Allow early collapse of edges to a point
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allowEarlyCollapseToPoint on;
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// Fraction to premultiply maxCollapseFaceToPointSideLengthCoeff by if
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// allowEarlyCollapseToPoint is enabled
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allowEarlyCollapseCoeff 0.2;
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// Defining how close to the midpoint (M) of the projected
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// vertices line a projected vertex (X) can be before making this
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// an invalid edge collapse
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//
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// X---X-g----------------M----X-----------g----X--X
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//
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// Only allow a collapse if all projected vertices are outwith
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// guardFraction (g) of the distance form the face centre to the
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// furthest vertex in the considered direction
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guardFraction 0.1;
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}
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controlMeshQualityCoeffs
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{
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// Name of the dictionary that has the mesh quality coefficients used
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// by motionSmoother::checkMesh
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#include "meshQualityDict";
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// The amount that minimumEdgeLength will be reduced by for each
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// edge if that edge's collapse generates a poor quality face
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edgeReductionFactor 0.5;
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// The amount that initialFaceLengthFactor will be reduced by for each
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// face if its collapse generates a poor quality face
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faceReductionFactor 0.5;
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// Maximum number of outer iterations is mesh quality checking is enabled
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maximumIterations 10;
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maximumSmoothingIterations 1;
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maxPointErrorCount 3;
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}
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// ************************************************************************* //
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