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July 11, 2013, 11:26 |
How to refine the edges?
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#1 |
New Member
Thomas
Join Date: May 2013
Posts: 2
Rep Power: 0 |
Hi!
I have a problem with sharp edges. Which parameters should I change to get a better mesh? As you can see the object is not mesh very well even If I change the snapControls parameters. Code:
/*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 1.6 | | \\ / A nd | Web: http://www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class dictionary; object autoHexMeshDict; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // castellatedMesh true; snap true; addLayers false; geometry { cube.stl { type triSurfaceMesh; name cube; } }; castellatedMeshControls { maxLocalCells 1500000; maxGlobalCells 2000000; minRefinementCells 0; nCellsBetweenLevels 2; features ( {file "cube.eMesh"; level 2;} ); refinementSurfaces { cube { level (1 2); } } resolveFeatureAngle 0; refinementRegions { } locationInMesh (2 2 2); allowFreeStandingZoneFaces true; } snapControls { nSmoothPatch 15; tolerance 0.1; nSolveIter 300; nRelaxIter 15; } addLayersControls { relativeSizes true; layers { } expansionRatio 1.1; finalLayerThickness 0.7; minThickness 0.1; nGrow 1; featureAngle 60; nRelaxIter 5; nSmoothSurfaceNormals 1; nSmoothNormals 3; nSmoothThickness 10; maxFaceThicknessRatio 0.9; maxThicknessToMedialRatio 0.9; minMedianAxisAngle 130; nBufferCellsNoExtrude 0; nLayerIter 50; nRelaxedIter 20; } meshQualityControls { maxNonOrtho 65; maxBoundarySkewness 20; maxInternalSkewness 4; maxConcave 80; minFlatness 0.5; minVol 1e-13; minTetQuality 1e-30; minArea -1; minTwist 0.05; minDeterminant 0.001; minFaceWeight 0.05; minVolRatio 0.01; minTriangleTwist -1; nSmoothScale 4; errorReduction 0.75; relaxed { maxNonOrtho 75; } } debug 0; mergeTolerance 1E-6; // ************************************************************************* // |
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