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March 23, 2019, 09:40 |
snappyHexMesh/Castellated Mesh not working
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#1 |
Member
shima
Join Date: Feb 2018
Posts: 58
Rep Power: 8 |
Hi
I am simulating flow in a flume with the use of olaFlow. I used snappyHexMesh for the solid structures that I have in the flow, it runs without any error but at the end, when I open it with paraview, it doens't show me any whole in the place of my ".stl" files. Here is my snappyHexMeshDict, I modified it according to the breakwater tutorial of olaFlow but the results are not the same. (although in breakwater example it shows a whole, in my simulation it doesn't) FoamFile { version 2.0; format ascii; class dictionary; object snappyHexMeshDict; } castellatedMesh true; snap false; addLayers false; geometry { A3b2.stl { type triSurfaceMesh; name A3b2; } A3b1.stl { type triSurfaceMesh; name A3b1; } A3b3.stl { type triSurfaceMesh; name A3b3; } } castellatedMeshControls { maxLocalCells 10000000; maxGlobalCells 10000000; minRefinementCells 10; maxLoadUnbalance 0.10; nCellsBetweenLevels 2; //resolveFeatureAngle 30; features ( { file "A3b2.eMesh"; level 1; } { file "A3b1.eMesh"; level 1; } { file "A3b3.eMesh"; level 1; } ); refinementSurfaces { A3b2 { level (0 0); } A3b1 { level (0 0); } A3b3 { level (0 0); } } resolveFeatureAngle 30; refinementRegions { } locationInMesh (6.6 0 0.0); allowFreeStandingZoneFaces true; } snapControls { nSmoothPatch 3; tolerance 4.0; nSolveIter 30; nRelaxIter 5; nFeatureSnapIter 5; } addLayersControls { relativeSizes true; layers { terrain_patch0 { nSurfaceLayers 9; } ground { nSurfaceLayers 9; } } expansionRatio 1.2; finalLayerThickness 0.3; minThickness 0.0000001; nGrow 0; featureAngle 180; nRelaxIter 5; nSmoothSurfaceNormals 1; nSmoothNormals 3; nSmoothThickness 10; maxFaceThicknessRatio 0.5; maxThicknessToMedialRatio 0.3; minMedianAxisAngle 90; nBufferCellsNoExtrude 0; nLayerIter 50; nRelaxedIter 20; } meshQualityControls { maxNonOrtho 80; maxBoundarySkewness 20; maxInternalSkewness 4; maxConcave 80; minVol 1e-13; minTetQuality -1E30; minArea -1; minTwist 0.05; minDeterminant 0.001; minFaceWeight 0.05; minVolRatio 0.01; minTriangleTwist -1; nSmoothScale 4; errorReduction 0.75; relaxed { maxNonOrtho 80; } } debug 0; mergeTolerance 1e-6; I will appreciate for any help. Thanks, shima |
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