[snappyHexMesh] Layers collapsing problem

Manideep Reddy · March 12, 2018, 01:36

Dear All,

Greetings of the day..!

I am having a peculiar problem with SnappyHexMesh layer generation. Mine is a simple 3D geometry. Even for this, layers are collapsing and not continuous throughout the surface. I have attached screenshot of layers generated and below I am mentioning my parametres for controlloing layer generation. Can anyone say what is the parametre that I have to change to get nice continuous layers.

https://drive.google.com/open?id=1Z8...ooUaPExsnlFgmJ

https://drive.google.com/open?id=12U...IuegG2s8Xip8ZQ

addLayersControls
{
relativeSizes true;
layers
{
"(lowerWall|motorBike).*"
{
nSurfaceLayers 10;
}
}

expansionRatio 1;
finalLayerThickness 0.2;
minThickness 0.1;
nGrow 0;
featureAngle 180;
slipFeatureAngle 30;
nRelaxIter 3;
nSmoothSurfaceNormals 1;
nSmoothNormals 3;
nSmoothThickness 10;
maxFaceThicknessRatio 0.5;
maxThicknessToMedialRatio 0.3;
minMedianAxisAngle 90;
nBufferCellsNoExtrude 0;
nLayerIter 50;
}

dickcruz · March 12, 2018, 03:15

Quote:

addLayersControls
{
relativeSizes true;
layers
{
"(lowerWall|motorBike).*"
{
nSurfaceLayers 10;
}
}

}

Do you have just the one patch?

Manideep Reddy · March 12, 2018, 07:09

No, I have few other patches. But I need to add layers only on the motorBike patch.

March 12, 2018, 01:36	Layers collapsing problem	#1
Manideep Reddy New Member Manideep Reddy Join Date: Aug 2017 Posts: 7 Rep Power: 8	Dear All, Greetings of the day..! I am having a peculiar problem with SnappyHexMesh layer generation. Mine is a simple 3D geometry. Even for this, layers are collapsing and not continuous throughout the surface. I have attached screenshot of layers generated and below I am mentioning my parametres for controlloing layer generation. Can anyone say what is the parametre that I have to change to get nice continuous layers. https://drive.google.com/open?id=1Z8...ooUaPExsnlFgmJ https://drive.google.com/open?id=12U...IuegG2s8Xip8ZQ addLayersControls { relativeSizes true; layers { "(lowerWall\|motorBike).*" { nSurfaceLayers 10; } } expansionRatio 1; finalLayerThickness 0.2; minThickness 0.1; nGrow 0; featureAngle 180; slipFeatureAngle 30; nRelaxIter 3; nSmoothSurfaceNormals 1; nSmoothNormals 3; nSmoothThickness 10; maxFaceThicknessRatio 0.5; maxThicknessToMedialRatio 0.3; minMedianAxisAngle 90; nBufferCellsNoExtrude 0; nLayerIter 50; }

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March 12, 2018, 07:09		#3
Manideep Reddy New Member Manideep Reddy Join Date: Aug 2017 Posts: 7 Rep Power: 8	No, I have few other patches. But I need to add layers only on the motorBike patch.