| aminem |
October 6, 2014 04:10 |
Need help to improve my snappyHexMesh mesh
5 Attachment(s)
Hi
I created mesh with snappyHexMesh but I have some
problem to have good mesh (see picture). Can anyone help me to ameliorate my mesh.
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.3.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location system;
object snappyHexMeshDict;
}
castellatedMesh true;
snap true;
addLayers true;
geometry
{
cuve1.stl
{
type triSurfaceMesh;
name cuve1;
}
cuve2.stl
{
type triSurfaceMesh;
name cuve2;
}
cuve3.stl
{
type triSurfaceMesh;
name cuve3;
}
P3.stl
{
type triSurfaceMesh;
name P3;
}
P4.stl
{
type triSurfaceMesh;
name P4;
}
shaft.stl
{
type triSurfaceMesh;
name shaft;
}
P4MRF
{
type searchableCylinder;
point1 ( 0.0 -0.0035 0.0 );
point2 ( 0.0 0.0465 0.0 );
radius 0.05;
}
P3MRF
{
type searchableCylinder;
point1 ( 0.0 0.135 0.0 );
point2 ( 0.0 0.185 0.0 );
radius 0.05;
}
}
castellatedMeshControls
{
features
(
);
refinementSurfaces
{
cuve1
{
level ( 0 0 );
}
cuve2
{
level ( 0 0);
}
cuve3
{
level ( 0 0 );
}
P3
{
level ( 0 2 );
}
P4
{
level ( 0 2 );
}
shaft
{
level ( 0 2 );
}
P4MRF
{
faceType internal;
faceZone MRFP4;
cellZoneInside inside;
cellZone MRFP4;
level ( 0 0 );
}
P3MRF
{
faceType internal;
faceZone MRFP3;
cellZoneInside inside;
cellZone MRFP3;
level ( 0 0 );
}
}
refinementRegions
{
P4MRF
{
mode inside;
levels (( 1E5 2 ));
}
P3MRF
{
mode inside;
levels (( 1E5 2 ));
}
}
locationInMesh ( 0.0 0.0 0.05 );
maxLocalCells 100000;
maxGlobalCells 2000000;
minRefinementCells 0;
nCellsBetweenLevels 1;
resolveFeatureAngle 30;
allowFreeStandingZoneFaces true;
planarAngle 30;
maxLoadUnbalance 0.10;
}
snapControls
{
nSolveIter 30;
nSmoothPatch 3;
tolerance 2.0;
nRelaxIter 5;
nFeatureSnapIter 10;
implicitFeatureSnap true;
explicitFeatureSnap true;
multiRegionFeatureSnap true;
}
addLayersControls
{
layers
{
cuve2
{
nSurfaceLayers 3;
}
cuve3
{
nSurfaceLayers 3;
}
P3
{
nSurfaceLayers 3;
}
P4
{
nSurfaceLayers 3;
}
shaft
{
nSurfaceLayers 3;
}
}
relativeSizes true;
expansionRatio 1.2;
finalLayerThickness 0.3;
minThickness 0.25;
nGrow 0;
featureAngle 130;
slipFeatureAngle 30;
nRelaxIter 5;
nSmoothSurfaceNormals 1;
nSmoothNormals 3;
nSmoothThickness 10;
maxFaceThicknessRatio 0.5;
maxThicknessToMedialRatio 0.3;
minMedianAxisAngle 90;
nBufferCellsNoExtrude 0;
nLayerIter 50;
nRelaxedIter 20;
writeVTK false;
noErrors false;
layerRecovery 1;
growZoneLayers false;
projectGrownUp 0.0;
}
meshQualityControls
{
maxNonOrtho 65;
maxBoundarySkewness 20;
maxInternalSkewness 4;
maxConcave 80;
minFlatness 0.5;
minVol 1.00E-13;
minTetQuality 1e-15;
minArea -1;
minTwist 0.02;
minDeterminant 0.001;
minFaceWeight 0.05;
minVolRatio 0.01;
minTriangleTwist -1;
nSmoothScale 4;
errorReduction 0.75;
}
debug 0;
mergeTolerance 1E-6;
autoBlockMesh true;
Thanks |
