Urgent
 

Hello all,
I am new to OpenFOAM, I am trying to generate mesh using snappyHexMesh.
I realised that castellated mesh is not working properly.
If I keep it ON or OFF; meshing are still same. Can you help me what is wrong in it?? Also, if i increase level of refinement, there is error, and the meshing aborted.

refinementSurfaces
{
hull
{
level (2 2);
}



This is my SHM code-

#includeEtc "caseDicts/mesh/generation/snappyHexMeshDict.cfg"

castellatedMesh on;
snap on;
addLayers on;

geometry
{
hull
{
type triSurfaceMesh;
file "hull.stl";

patchInfo {
type wall;
}
}
};

castellatedMeshControls
{
features
(
{ file "hull.eMesh"; level 6; }
);

refinementSurfaces
{
hull
{
level (2 2);
}
resolveFeatureAngle 60;
}

refinementRegions
{
//inside , outside , distance
CAD
{
mode inside;
levels ((1E15 5));
}
}

locationInMesh (1.5 1 0); // Offset from (0 0 0) to avoid
// coinciding with face or edge
//nCellsBetweenLevels 3;
}

snapControls
{
// explicitFeatureSnap true;
// implicitFeatureSnap false; // by default
}

addLayersControls
{
layers
{
"hull.*"
{
nSurfaceLayers 6;
}
// top
// {
// nSurfaceLayers 5;
// {
}

relativeSizes true; // false, usually with firstLayerThickness
expansionRatio 1.2;
finalLayerThickness 0.002;
minThickness 1e-4;
// firstLayerThickness 0.01;

// maxThicknessToMedialRatio 0.6;
}

meshQualityControls
{
minTetQuality -1e+30;
}

writeFlags
(
// scalarLevels
layerSets
layerFields
);

mergeTolerance 1e-6;

// ************************************************** *********************** //

Are you running snappyHexMesh -overwrite?


snappyHexMesh creates different mesh in idfferent timestep (folder), 0 (castelled), 1 (snap), 2 (boundary layer).

You have to open in paraview e move with the timestep.
Otherwise, you can run snappyHexMesh -overwrite and snappy will create the mesh in the normal folder

Carlo_P,
Thanks for your prompt reply. I did not use snappyHexMesh -overwrite, I would use it and see .

Thank you so much.

Carlo_P,

Using snappyHexMesh -overwrite worked.

Thank you :)

Great!
If you want to add a reputation point, I will appreciate :):):)