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Old   February 1, 2024, 13:39
Default snappyHexMesh
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Martin Mathew
Join Date: Nov 2023
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Hello,

I have been constantly getting the following error:

Scaling iteration 0
Moving mesh using displacement scaling : min:1 max:1
Correcting 2-D mesh motion--> FOAM Warning :
From void Foam::twoDPointCorrector::calcAddressing() const
in file twoDPointCorrector/twoDPointCorrector.C at line 163
The number of points in the mesh is not equal to twice the number of edges normal to the plane - this may be OK only for wedge geometries.
Please check the geometry or adjust the orthogonality tolerance.

Could you kindly help, resolve it.

<Below is my snappyHexMeshDict>

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2212 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location system;
object snappyHexMeshDict;
}
//************************************************** ******************//

castellatedMesh true;
snap true;
addLayers false;
geometry
{
fish.stl { type triSurfaceMesh; name fish; }
refinementeBox
{
type searchableBox;
min (0.9 0 0);
max (2.4 0.75 0.01);
}

fishRefinementBox
{
type searchableBox;
min (1.38 0.33 0);
max (1.72 0.42 0.01);
}

}

castellatedMeshControls
{
features
(
{ file "fish.eMesh";
level 2 ; //2
//refineFeatureEdgesOnly false;
}
);

refinementSurfaces
{
fish {
level (1 2);
patchInfo
{
type wall;
}
}


}

refinementRegions
{
fish
{

mode distance;
levels ((0.02 5) (0.04 3)); //mode outside;
//levels ((0.1 1));


}

/*refinementeBox
{

mode inside;
levels ((0.1 1));

}

fishRefinementBox
{

mode inside;
levels ((0.1 1));

}*/

}

locationInMesh (1.2 0.54 0.0008); //(1.2 0.54 0.0009)
maxLocalCells 100000;
maxGlobalCells 200000;
minRefinementCells 0;
nCellsBetweenLevels 1;
resolveFeatureAngle 20;
allowFreeStandingZoneFaces true;
planarAngle 30.0;
maxLoadUnbalance 0.1;
}

snapControls
{
nSolveIter 300;
nSmoothPatch 5;
tolerance 2.0;
nRelaxIter 25;
nFeatureSnapIter 20;
implicitFeatureSnap false;
explicitFeatureSnap true;
multiRegionFeatureSnap true;
}

addLayersControls
{
layers
{
//"patch_inlet-fancoil.*"
//{
//nSurfaceLayers 10;
//}
}

relativeSizes true;
expansionRatio 1.05;
finalLayerThickness 0.5;
minThickness 0.05;
nGrow 0;
featureAngle 130;
slipFeatureAngle 60;
nRelaxIter 5;
nSmoothSurfaceNormals 1;
nSmoothNormals 3;
nSmoothThickness 10;
maxFaceThicknessRatio 0.5;
maxThicknessToMedialRatio 0.3;
minMedialAxisAngle 90;
nBufferCellsNoExtrude 0;
nLayerIter 50;
nRelaxedIter 20;
writeVTK false;
noErrors false;
layerRecovery 1;
growZoneLayers false;
projectGrownUp 0.0;
}

meshQualityControls
{
maxNonOrtho 65.0;
maxBoundarySkewness 3;
maxInternalSkewness 3;
maxConcave 65.0;
minFlatness 0.5;
minVol 1.0E-13;
minTetQuality 1.0E-15;
minArea -1.0;
minTwist 0.02;
minDeterminant 0.001;
minFaceWeight 0.05;
minVolRatio 0.01;
minTriangleTwist -1.0;
nSmoothScale 4;
errorReduction 0.75;
relaxed
{
maxNonOrtho 65;
}
}

debug 0;
mergeTolerance 1.0E-2;
autoBlockMesh true;
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