| rama13 |
April 11, 2013 09:36 |
keyword nGrow undefined in "...snappyHexMeshDict.addLayersControls"
1 Attachment(s)
Hi all OpenFOAMers,
I'm using snappyHexMesh (OF v.2.2).
Unfortunately the process breaks down with the following error:
Code:
--> FOAM FATAL IO ERROR:
keyword nGrow is undefined in dictionary "/home/damiano/openfoamcourse/spillway/system/snappyHexMeshDict.addLayersControls"
file: /home/damiano/openfoamcourse/spillway/system/snappyHexMeshDict.addLayersControls from line 201 to line 271.
From function dictionary::lookupEntry(const word&, bool, bool) const
in file db/dictionary/dictionary.C at line 402.
FOAM exiting
even if I specify keyword nGrow in my snappyHexMeshDict:
Code:
// Settings for the layer addition.
addLayersControls
{
// Are the thickness parameters below relative to the undistorted
// size of the refined cell outside layer (true) or absolute sizes (false).
relativeSizes true;
// Per final patch (so not geometry!) the layer information
layers
{
"(bottomWall|dam).*"
{
nSurfaceLayers 2;
}
}
// Expansion factor for layer mesh
expansionRatio 1.3; //1.0;
// Wanted thickness of final added cell layer. If multiple layers
// is the thickness of the layer furthest away from the wall.
// Relative to undistorted size of cell outside layer.
// is the thickness of the layer furthest away from the wall.
// See relativeSizes parameter.
finalLayerThickness 0.7; //0.3;
// Minimum thickness of cell layer. If for any reason layer
// cannot be above minThickness do not add layer.
// Relative to undistorted size of cell outside layer.
// See relativeSizes parameter.
minThickness 0.25 //0.1;
// If points get not extruded do nGrow layers of connected faces that are
// also not grown. This helps convergence of the layer addition process
// close to features.
// Note: changed(corrected) w.r.t 17x! (didn't do anything in 17x)
nGrow 1;
// Advanced settings
// When not to extrude surface. 0 is flat surface, 90 is when two faces
// are perpendicular
featureAngle 60;
// Maximum number of snapping relaxation iterations. Should stop
// before upon reaching a correct mesh.
nRelaxIter 5;
// Number of smoothing iterations of surface normals
nSmoothSurfaceNormals 1;
// Number of smoothing iterations of interior mesh movement direction
nSmoothNormals 3;
// Smooth layer thickness over surface patches
nSmoothThickness 10;
// Stop layer growth on highly warped cells
maxFaceThicknessRatio 0.5;
// Reduce layer growth where ratio thickness to medial
// distance is large
maxThicknessToMedialRatio 0.3;
// Angle used to pick up medial axis points
// Note: changed(corrected) w.r.t 16x! 90 degrees corresponds to 130 in 16x.
minMedianAxisAngle 90;
// Create buffer region for new layer terminations
nBufferCellsNoExtrude 0;
// Overall max number of layer addition iterations. The mesher will exit
// if it reaches this number of iterations; possibly with an illegal
// mesh.
nLayerIter 50;
}
Please find the whole snappyHexMeshDict in attachment.
Any ideas?!
Thanks for your attention,
Damiano |
