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ENH: snappyHexMesh: add buffer layers before snapping

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This commit is contained in:
Mattijs Janssens
2024-12-12 16:13:32 +00:00
parent e7cf8a1d59
commit de5d34787c
231 changed files with 46574 additions and 963 deletions
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36
tutorials/mesh/snappyHexMesh/airfoilWithLayers/system/blockMeshDict
View File

@ -18,14 +18,14 @@ scale 1;
vertices
(
(-1 -1 -1)
( 2 -1 -1)
( 2 0 -1)
(-1 0 -1)
(-1 -1 1)
( 2 -1 1)
( 2 0 1)
(-1 0 1)
(-1 -0.8 -1)
( 2 -0.8 -1)
( 2 -0.2 -1)
(-1 -0.2 -1)
(-1 -0.8 1)
( 2 -0.8 1)
( 2 -0.2 1)
(-1 -0.2 1)
);
blocks
@ -44,14 +44,30 @@ boundary
type patch;
faces
(
(3 7 6 2)
(1 5 4 0) //back
(2 6 5 1) //outlet
(0 4 7 3) //inlet
(0 3 2 1) //lowerWall
(4 5 6 7) //upperWall
);
}
front
{
type symmetryPlane;
faces
(
(3 7 6 2)
);
}
back
{
type symmetryPlane;
faces
(
(1 5 4 0) //back
);
}
);

14
tutorials/mesh/snappyHexMesh/airfoilWithLayers/system/fvSchemes
View File

@ -5,14 +5,14 @@
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object fvSchemes;
version 2;
format ascii;
class dictionary;
object fvSchemes;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
ddtSchemes
{
@ -20,6 +20,7 @@ ddtSchemes
gradSchemes
{
default Gauss linear;
}
divSchemes
@ -28,14 +29,17 @@ divSchemes
laplacianSchemes
{
default Gauss linear corrected;
}
interpolationSchemes
{
default linear;
}
snGradSchemes
{
default corrected;
}
wallDist

7
tutorials/mesh/snappyHexMesh/airfoilWithLayers/system/fvSolution
View File

@ -16,6 +16,13 @@ FoamFile
solvers
{
"cellDisplacement.*"
{
solver GAMG;
tolerance 1e-08;
relTol 0;
smoother GaussSeidel;
}
}

64
tutorials/mesh/snappyHexMesh/airfoilWithLayers/system/snappyHexMeshDict
View File

@ -14,6 +14,11 @@ FoamFile
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Type of mesh generation:
// - castellated (default)
// - castellatedBufferLayer
//type castellatedBufferLayer;
// Which of the steps to run
castellatedMesh true;
snap true;
@ -427,6 +432,31 @@ castellatedMeshControls
//nCellZoneErodeIter 2;
}
// Internal macro for mesh-motion solver to use
_meshMotionSolver
{
solver displacementPointSmoothing;
displacementPointSmoothingCoeffs
{
//// Use geometricElementTransform to maintain relative sizes
//pointSmoother geometricElementTransform;
//transformationParameter 0.667;
//nPointSmootherIter 10;
// Use laplacian to untangle problem areas
pointSmoother laplacian;
nPointSmootherIter 10;
//relaxationFactors (1.0 0.8 0.6 0.4 0.2 0.0);
//meshQuality
//{
// #includeEtc "caseDicts/meshQualityDict"
//}
}
}
// Settings for the snapping.
snapControls
{
@ -501,6 +531,10 @@ snapControls
//- Attract points only to the surface they originate from. Default
// false. This can improve snapping of intersecting surfaces.
strictRegionSnap true;
// Motion solver to use (when in castellatedBufferLayer)
${_meshMotionSolver}
}
// Settings for the layer addition.
@ -601,19 +635,27 @@ addLayersControls
// motion solvers. It needs specification of the solver to use and
// its control dictionary.
//meshShrinker displacementMotionSolver;
//solver displacementLaplacian;
//displacementLaplacianCoeffs
//solver multiDisplacement;
//solvers
//{
// diffusivity quadratic inverseDistance
// (
// sphere.stl_firstSolid
// maxY
// );
// displacementLaplacian
// {
// // Note that e.g. displacementLaplacian needs entries in
// // fvSchemes, fvSolution. Also specify a minIter > 1 when
// // solving
// // cellDisplacement since otherwise solution might not be
// // sufficiently accurate on points.
// solver displacementLaplacian;
// diffusivity quadratic inverseDistance
// (
// aerofoil
// );
// }
// displacementPointSmoothing
// {
// ${_meshMotionSolver}
// }
//}
// Note that e.g. displacementLaplacian needs entries in
// fvSchemes, fvSolution. Also specify a minIter > 1 when solving
// cellDisplacement since otherwise solution might not be sufficiently
// accurate on points.
// Medial axis analysis (for use with default displacementMedialAxis)