[Ferdinand]

Dear Foamers,

I have a lot problems with my mesh. The domains is a batrymetry of river meander, i use for development the mesh snappyHexMesh (SHM) and have problems with The refinement of the mesh.


Best regards,
Luis


__________________________________________________ ______________________
castellatedMesh true;
snap true;
addLayers false;

geometry
{
batimetria.stl
{
type triSurfaceMesh;
name batimetria;
}

refinementBox
{
type searchableBox;
min (0 -2.0 -1.8);
max (40.00 42.00 -0.93);
}
};

castellatedMeshControls
{
maxLocalCells 200000;
maxGlobalCells 1200000;
minRefinementCells 100;
nCellsBetweenLevels 3;
refinementSurfaces
{
batimetria
{
level (5 6); //(4 4); //it was 2 2 C.Frias
}
}
resolveFeatureAngle 1;
refinementRegions
{
refinementBox
{
mode inside;
levels ((1E15 6));
}
}

locationInMesh (3.8758781 4.377407 -0.935255);

}

snapControls
{
nSmoothPatch 3;

tolerance 4.0;
nSolveIter 30;
nRelaxIter 5;
}
addLayersControls
{
relativeSizes true;
layers
{
batimetria
{
nSurfaceLayers 6;
}
}
expansionRatio 1.0;
finalLayerThickness 0.3;
minThickness 0.1;
nGrow 0;
featureAngle 30;
nRelaxIter 3;
nSmoothSurfaceNormals 1;
nSmoothNormals 3;
nSmoothThickness 10;
maxFaceThicknessRatio 0.5;
maxThicknessToMedialRatio 0.3;
minMedianAxisAngle 130;
nBufferCellsNoExtrude 0;
nLayerIter 50;
}
meshQualityControls
{

maxNonOrtho 80;

maxBoundarySkewness 40;
maxInternalSkewness 8;

maxConcave 90; //it was 80 C.Frias


minFlatness 0.5;

minVol 1e-13;
minTetQuality 1e-30;

minArea 1e-13;

minTwist 0.02;
minDeterminant 0.001;
minFaceWeight 0.02;
minVolRatio 0.01;
minTriangleTwist -1;

nSmoothScale 4;

errorReduction 0.75;
}

debug 0;
mergeTolerance 1e-6;

[me3840]

You are going to need to give more information if you want help. Post pictures of your geometry and the meshes you have already. What are the refinement problems you're having?

[Ferdinand]

Originally Posted by me3840

You are going to need to give more information if you want help. Post pictures of your geometry and the meshes you have already. What are the refinement problems you're having?

Hello,

I was trying to send my file but I can not upload it. There is some other source of how to send my file.
Thank you very much for your help.

Best regards,

[KaLium]

How complex is your geometry?

maxLocalCells 200000;
maxGlobalCells 1200000;
Seem to have very low values.