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meshing tutorials

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mattijs
2008-07-09 15:18:39 +01:00
parent 475aa6779d
commit 17beb3c21a
17 changed files with 2323430 additions and 0 deletions
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52
tutorials/snappyHexMesh/iglooWithFridges/constant/dynamicMeshDict Normal file
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// The FOAM Project // File: motionProperties
/*
-------------------------------------------------------------------------------
========= | dictionary
\\ / |
\\ / | Name: motionProperties
\\ / | Family: FoamX configuration file
\\/ |
F ield | FOAM version: 2.1
O peration | Product of Nabla Ltd.
A and |
M anipulation | Email: Enquiries@Nabla.co.uk
-------------------------------------------------------------------------------
*/
// FoamX Case Dictionary.
version 1.0;
format ascii;
root "/home/warhol/chris/foam/chris2.1/run/Test";
case "movingCone";
instance "constant";
local "";
class dictionary;
form dictionary;
object motionProperties;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
//motionSolverLibs ("libfvMotionSolvers.so");
solver laplacian;
//solver componentLaplacian x;
twoDMotion no;
diffusivity uniform;
//motionPlaneNormal (0 0 1);
//
//movingSurface yes;
//
//twoFluids no;
//
//normalMotionDir no;
//
//motionURF 1.0;
//
//boundaryCorrection yes;
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "";
case "";
instance "";
local "";
class dictionary;
object blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
convertToMeters 1;
vertices
(
(-2.03 -2.0 0)
( 8.03 -2.0 0)
( 8.03 8.0 0)
(-2.03 8.0 0)
(-2.03 -2.0 5)
( 8.03 -2.0 5)
( 8.03 8.0 5)
(-2.03 8.0 5)
);
blocks
(
hex (0 1 2 3 4 5 6 7) (20 20 20) simpleGrading (1 1 1)
);
edges
(
);
patches
(
patch maxY
(
(3 7 6 2)
)
patch minX
(
(0 4 7 3)
)
patch maxX
(
(2 6 5 1)
)
patch minY
(
(1 5 4 0)
)
patch minZ
(
(0 3 2 1)
)
patch maxZ
(
(4 5 6 7)
)
);
mergePatchPairs
(
);
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "";
case "";
instance "";
local "";
class dictionary;
object transportProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
nu nu [0 2 -1 0 0 0 0] 0.01;
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "";
case "";
instance "";
local "";
class dictionary;
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
application icoFoam;
startFrom latestTime;
startTime 0;
stopAt endTime;
endTime 100;
deltaT 1;
writeControl timeStep;
writeInterval 1;
purgeWrite 0;
//writeFormat binary;
writeFormat ascii;
writePrecision 7;
writeCompression uncompressed;
timeFormat general;
timePrecision 6;
runTimeModifiable yes;
// ************************************************************************* //

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// The FOAM Project // File: decomposeParDict
/*
-------------------------------------------------------------------------------
========= | dictionary
\\ / |
\\ / | Name: decomposeParDict
\\ / | Family: FoamX configuration file
\\/ |
F ield | FOAM version: 2.1
O peration | Product of Nabla Ltd.
A and |
M anipulation | Email: Enquiries@Nabla.co.uk
-------------------------------------------------------------------------------
*/
// FoamX Case Dictionary.
FoamFile
{
version 2.0;
format ascii;
root "/home/penfold/mattijs/foam/mattijs2.1/run/icoFoam";
case "cavity";
instance "system";
local "";
class dictionary;
object decomposeParDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
arguments "/home/penfold/mattijs/foam/mattijs2.1/run/icoFoam" "cavity";
numberOfSubdomains 6;
method hierarchical;
//method metis;
//method parMetis;
simpleCoeffs
{
n (4 1 1);
delta 0.001;
}
hierarchicalCoeffs
{
n (3 2 1);
delta 0.001;
order xyz;
}
manualCoeffs
{
dataFile "cellDecomposition";
}
metisCoeffs
{
//n (5 1 1);
//cellWeightsFile "constant/cellWeightsFile";
}
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "";
case "";
instance "";
local "";
class dictionary;
object fvSchemes;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
ddtSchemes
{
default Euler;
}
gradSchemes
{
default Gauss linear;
grad(p) Gauss linear;
//snGradCorr(cellMotionU) Gauss linear;
}
divSchemes
{
default none;
div(phi,U) Gauss linear;
}
laplacianSchemes
{
default none;
laplacian(nu,U) Gauss linear corrected;
laplacian(1|A(U),p) Gauss linear corrected;
laplacian(diffusivity,cellMotionU) Gauss linear uncorrected;
}
interpolationSchemes
{
default linear;
interpolate(HbyA) linear;
}
snGradSchemes
{
default corrected;
}
fluxRequired
{
default no;
p;
}
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "";
case "";
instance "";
local "";
class dictionary;
object fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
solvers
{
//p ICCG 1e-06 0;
p AMG 1e-06 0 10;
U BICCG 1e-05 0;
// Meshmotion
cellMotionU ICCG 1e-6 0.0;
cellMotionUx ICCG 1e-6 0.0;
}
PISO
{
nCorrectors 2;
nNonOrthogonalCorrectors 0;
pRefCell 0;
pRefValue 0;
}
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "/home/penfold/mattijs/foam/mattijs2.1/run/icoFoam";
case "cavity";
instance "system";
local "";
class dictionary;
object autoHexMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Which of the steps to run
castellatedMesh true;
snap true;
addLayers true;
// Geometry. Definition of all surfaces. All surfaces are of class
// searchableSurface.
// Surfaces are used
// - to specify refinement for any mesh cell intersecting it
// - to specify refinement for any mesh cell inside/outside/near
// - to 'snap' the mesh boundary to the surface
geometry
{
fridgeA
{
type searchableBox;
min (2 2 0);
max (3 3 2);
}
fridgeB
{
type searchableBox;
min (3.5 3 0);
max (4.3 3.8 1.8);
}
igloo
{
type searchableSphere;
centre (3 3 0);
radius 4;
}
};
// Settings for the castellatedMesh generation.
castellatedMeshControls
{
// Refinement parameters
// ~~~~~~~~~~~~~~~~~~~~~
// While refining maximum number of cells per processor. This is basically
// the number of cells that fit on a processor. If you choose this too small
// it will do just more refinement iterations to obtain a similar mesh.
maxLocalCells 1000000;
// Overall cell limit (approximately). Refinement will stop immediately
// upon reaching this number so a refinement level might not complete.
// Note that this is the number of cells before removing the part which
// is not 'visible' from the keepPoint. The final number of cells might
// actually be a lot less.
maxGlobalCells 2000000;
// The surface refinement loop might spend lots of iterations refining just a
// few cells. This setting will cause refinement to stop if <= minimumRefine
// are selected for refinement. Note: it will at least do one iteration
// (unless the number of cells to refine is 0)
minRefinementCells 0;
// Number of buffer layers between different levels.
// 1 means normal 2:1 refinement restriction, larger means slower
// refinement.
nCellsBetweenLevels 1;
// Explicit feature edge refinement
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Specifies a level for any cell intersected by its edges.
// This is a featureEdgeMesh, read from constant/triSurface for now.
features
(
//{
// file "someLine.eMesh";
// level 2;
//}
);
// Surface based refinement
// ~~~~~~~~~~~~~~~~~~~~~~~~
// Specifies two levels for every surface. The first is the minimum level,
// every cell intersecting a surface gets refined up to the minimum level.
// The second level is the maximum level. Cells that 'see' multiple
// intersections where the intersections make an
// angle > resolveFeatureAngle get refined up to the maximum level.
refinementSurfaces
{
fridgeA
{
// Surface-wise min and max refinement level
level (2 2);
}
fridgeB
{
// Surface-wise min and max refinement level
level (2 2);
}
igloo
{
// Surface-wise min and max refinement level
level (1 1);
}
}
// Resolve sharp angles on fridges
resolveFeatureAngle 60;
// Region-wise refinement
// ~~~~~~~~~~~~~~~~~~~~~~
// Specifies refinement level for cells in relation to a surface. One of
// three modes
// - distance. 'levels' specifies per distance to the surface the
// wanted refinement level. The distances need to be specified in
// descending order.
// - inside. 'levels' is only one entry and only the level is used. All
// cells inside the surface get refined up to the level. The surface
// needs to be closed for this to be possible.
// - outside. Same but cells outside.
refinementRegions
{
}
// Mesh selection
// ~~~~~~~~~~~~~~
// After refinement patches get added for all refinementSurfaces and
// all cells intersecting the surfaces get put into these patches. The
// section reachable from the locationInMesh is kept.
// NOTE: This point should never be on a face, always inside a cell, even
// after refinement.
locationInMesh (3 0.28 0.43);
}
// Settings for the snapping.
snapControls
{
//- Number of patch smoothing iterations before finding correspondence
// to surface
nSmoothPatch 3;
//- Relative distance for points to be attracted by surface feature point
// or edge. True distance is this factor times local
// maximum edge length.
tolerance 4.0;
//- Number of mesh displacement relaxation iterations.
nSolveIter 30;
//- Maximum number of snapping relaxation iterations. Should stop
// before upon reaching a correct mesh.
nRelaxIter 5;
}
// Settings for the layer addition.
addLayersControls
{
// Per final patch (so not geometry!) the layer information
layers
{
fridgeA_region0
{
nSurfaceLayers 1;
}
fridgeB_region0
{
nSurfaceLayers 1;
}
igloo_region0
{
nSurfaceLayers 1;
}
}
// Expansion factor for layer mesh
expansionRatio 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.
finalLayerRatio 0.5;
//- 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.
minThickness 0.25;
//- 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.
nGrow 0;
// Advanced settings
//- When not to extrude surface. 0 is flat surface, 90 is when two faces
// make straight angle.
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
minMedianAxisAngle 130;
// Create buffer region for new layer terminations
nBufferCellsNoExtrude 0;
}
// Generic mesh quality settings. At any undoable phase these determine
// where to undo.
meshQualityControls
{
//- Maximum non-orthogonality allowed. Set to 180 to disable.
maxNonOrtho 65;
//- Max skewness allowed. Set to <0 to disable.
maxBoundarySkewness 20;
maxInternalSkewness 4;
//- Max concaveness allowed. Is angle (in degrees) below which concavity
// is allowed. 0 is straight face, <0 would be convex face.
// Set to 180 to disable.
maxConcave 80;
//- Minimum projected area v.s. actual area. Set to -1 to disable.
minFlatness 0.5;
//- Minimum pyramid volume. Is absolute volume of cell pyramid.
// Set to very negative number (e.g. -1E30) to disable.
minVol 1e-13;
//- Minimum face area. Set to <0 to disable.
minArea -1;
//- Minimum face twist. Set to <-1 to disable. dot product of face normal
//- and face centre triangles normal
minTwist 0.05;
//- minimum normalised cell determinant
//- 1 = hex, <= 0 = folded or flattened illegal cell
minDeterminant 0.001;
//- minFaceWeight (0 -> 0.5)
minFaceWeight 0.05;
//- minVolRatio (0 -> 1)
minVolRatio 0.01;
//must be >0 for Fluent compatibility
minTriangleTwist -1;
// Advanced
//- Number of error distribution iterations
nSmoothScale 4;
//- amount to scale back displacement at error points
errorReduction 0.75;
}
// Advanced
// Flags for optional output
// 0 : only write final meshes
// 1 : write intermediate meshes
// 2 : write volScalarField with cellLevel for postprocessing
// 4 : write current intersections as .obj files
debug 0;
// Merge tolerance. Is fraction of overall bounding box of initial mesh.
// Note: the write tolerance needs to be higher than this.
mergeTolerance 1E-6;
// ************************************************************************* //

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// The FOAM Project // File: motionProperties
/*
-------------------------------------------------------------------------------
========= | dictionary
\\ / |
\\ / | Name: motionProperties
\\ / | Family: FoamX configuration file
\\/ |
F ield | FOAM version: 2.1
O peration | Product of Nabla Ltd.
A and |
M anipulation | Email: Enquiries@Nabla.co.uk
-------------------------------------------------------------------------------
*/
// FoamX Case Dictionary.
version 1.0;
format ascii;
root "/home/warhol/chris/foam/chris2.1/run/Test";
case "movingCone";
instance "constant";
local "";
class dictionary;
form dictionary;
object motionProperties;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
//motionSolverLibs ("libfvMotionSolvers.so");
solver laplacian;
//solver componentLaplacian x;
twoDMotion no;
diffusivity uniform;
//motionPlaneNormal (0 0 1);
//
//movingSurface yes;
//
//twoFluids no;
//
//normalMotionDir no;
//
//motionURF 1.0;
//
//boundaryCorrection yes;
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "";
case "";
instance "";
local "";
class dictionary;
object blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
convertToMeters 1;
vertices
(
(-20.29 -10 -4.232e-05)
( 41.71 -10 -4.232e-05)
( 41.71 10 -4.232e-05)
(-20.29 10 -4.232e-05)
(-20.29 -10 20)
( 41.71 -10 20)
( 41.71 10 20)
(-20.29 10 20)
);
blocks
(
hex (0 1 2 3 4 5 6 7) (60 20 20) simpleGrading (1 1 1)
);
edges
(
);
patches
(
patch maxY
(
(3 7 6 2)
)
patch minX
(
(0 4 7 3)
)
patch maxX
(
(2 6 5 1)
)
patch minY
(
(1 5 4 0)
)
patch minZ
(
(0 3 2 1)
)
patch maxZ
(
(4 5 6 7)
)
);
mergePatchPairs
(
);
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "";
case "";
instance "";
local "";
class dictionary;
object transportProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
nu nu [0 2 -1 0 0 0 0] 0.01;
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "";
case "";
instance "";
local "";
class dictionary;
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
application icoFoam;
startFrom latestTime;
startTime 0;
stopAt endTime;
endTime 100;
deltaT 1;
writeControl timeStep;
writeInterval 1;
purgeWrite 0;
//writeFormat binary;
writeFormat ascii;
writePrecision 7;
writeCompression uncompressed;
timeFormat general;
timePrecision 6;
runTimeModifiable yes;
// ************************************************************************* //

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// The FOAM Project // File: decomposeParDict
/*
-------------------------------------------------------------------------------
========= | dictionary
\\ / |
\\ / | Name: decomposeParDict
\\ / | Family: FoamX configuration file
\\/ |
F ield | FOAM version: 2.1
O peration | Product of Nabla Ltd.
A and |
M anipulation | Email: Enquiries@Nabla.co.uk
-------------------------------------------------------------------------------
*/
// FoamX Case Dictionary.
FoamFile
{
version 2.0;
format ascii;
root "/home/penfold/mattijs/foam/mattijs2.1/run/icoFoam";
case "cavity";
instance "system";
local "";
class dictionary;
object decomposeParDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
arguments "/home/penfold/mattijs/foam/mattijs2.1/run/icoFoam" "cavity";
numberOfSubdomains 6;
method hierarchical;
//method metis;
//method parMetis;
simpleCoeffs
{
n (4 1 1);
delta 0.001;
}
hierarchicalCoeffs
{
n (3 2 1);
delta 0.001;
order xyz;
}
manualCoeffs
{
dataFile "cellDecomposition";
}
metisCoeffs
{
//n (5 1 1);
//cellWeightsFile "constant/cellWeightsFile";
}
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "";
case "";
instance "";
local "";
class dictionary;
object fvSchemes;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
ddtSchemes
{
default Euler;
}
gradSchemes
{
default Gauss linear;
grad(p) Gauss linear;
//snGradCorr(cellMotionU) Gauss linear;
}
divSchemes
{
default none;
div(phi,U) Gauss linear;
}
laplacianSchemes
{
default none;
laplacian(nu,U) Gauss linear corrected;
laplacian(1|A(U),p) Gauss linear corrected;
laplacian(diffusivity,cellMotionU) Gauss linear uncorrected;
}
interpolationSchemes
{
default linear;
interpolate(HbyA) linear;
}
snGradSchemes
{
default corrected;
}
fluxRequired
{
default no;
p;
}
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "";
case "";
instance "";
local "";
class dictionary;
object fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
solvers
{
//p ICCG 1e-06 0;
p AMG 1e-06 0 10;
U BICCG 1e-05 0;
// Meshmotion
cellMotionU ICCG 1e-6 0.0;
cellMotionUx ICCG 1e-6 0.0;
}
PISO
{
nCorrectors 2;
nNonOrthogonalCorrectors 0;
pRefCell 0;
pRefValue 0;
}
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.0 |
| \\ / A nd | Web: http://www.openfoam.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
root "/home/penfold/mattijs/foam/mattijs2.1/run/icoFoam";
case "cavity";
instance "system";
local "";
class dictionary;
object autoHexMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Which of the steps to run
castellatedMesh true;
snap true;
addLayers true;
// Geometry. Definition of all surfaces. All surfaces are of class
// searchableSurface.
// Surfaces are used
// - to specify refinement for any mesh cell intersecting it
// - to specify refinement for any mesh cell inside/outside/near
// - to 'snap' the mesh boundary to the surface
geometry
{
motorBike.stl
{
type triSurfaceMesh;
name motorBike;
}
refinementBox
{
type searchableBox;
min (-0.3 -0.4 -0.1);
max ( 3.0 0.4 1.4);
}
};
// Settings for the castellatedMesh generation.
castellatedMeshControls
{
// Refinement parameters
// ~~~~~~~~~~~~~~~~~~~~~
// While refining maximum number of cells per processor. This is basically
// the number of cells that fit on a processor. If you choose this too small
// it will do just more refinement iterations to obtain a similar mesh.
maxLocalCells 1000000;
// Overall cell limit (approximately). Refinement will stop immediately
// upon reaching this number so a refinement level might not complete.
// Note that this is the number of cells before removing the part which
// is not 'visible' from the keepPoint. The final number of cells might
// actually be a lot less.
maxGlobalCells 2000000;
// The surface refinement loop might spend lots of iterations refining just a
// few cells. This setting will cause refinement to stop if <= minimumRefine
// are selected for refinement. Note: it will at least do one iteration
// (unless the number of cells to refine is 0)
minRefinementCells 10;
// Number of buffer layers between different levels.
// 1 means normal 2:1 refinement restriction, larger means slower
// refinement.
nCellsBetweenLevels 2;
// Explicit feature edge refinement
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Specifies a level for any cell intersected by its edges.
// This is a featureEdgeMesh, read from constant/triSurface for now.
features
(
//{
// file "someLine.eMesh";
// level 2;
//}
);
// Surface based refinement
// ~~~~~~~~~~~~~~~~~~~~~~~~
// Specifies two levels for every surface. The first is the minimum level,
// every cell intersecting a surface gets refined up to the minimum level.
// The second level is the maximum level. Cells that 'see' multiple
// intersections where the intersections make an
// angle > resolveFeatureAngle get refined up to the maximum level.
refinementSurfaces
{
motorBike
{
// Surface-wise min and max refinement level
level (5 6);
}
}
// Resolve sharp angles
resolveFeatureAngle 30;
// Region-wise refinement
// ~~~~~~~~~~~~~~~~~~~~~~
// Specifies refinement level for cells in relation to a surface. One of
// three modes
// - distance. 'levels' specifies per distance to the surface the
// wanted refinement level. The distances need to be specified in
// descending order.
// - inside. 'levels' is only one entry and only the level is used. All
// cells inside the surface get refined up to the level. The surface
// needs to be closed for this to be possible.
// - outside. Same but cells outside.
refinementRegions
{
refinementBox
{
mode inside;
levels ((1E15 4));
}
}
// Mesh selection
// ~~~~~~~~~~~~~~
// After refinement patches get added for all refinementSurfaces and
// all cells intersecting the surfaces get put into these patches. The
// section reachable from the locationInMesh is kept.
// NOTE: This point should never be on a face, always inside a cell, even
// after refinement.
locationInMesh (3 3 0.43);
}
// Settings for the snapping.
snapControls
{
//- Number of patch smoothing iterations before finding correspondence
// to surface
nSmoothPatch 3;
//- Relative distance for points to be attracted by surface feature point
// or edge. True distance is this factor times local
// maximum edge length.
tolerance 4.0;
//- Number of mesh displacement relaxation iterations.
nSolveIter 30;
//- Maximum number of snapping relaxation iterations. Should stop
// before upon reaching a correct mesh.
nRelaxIter 5;
}
// Settings for the layer addition.
addLayersControls
{
// Per final patch (so not geometry!) the layer information
layers
{
minZ
{
nSurfaceLayers 1;
}
motorBike_frt-fairing:001%1
{
nSurfaceLayers 1;
}
motorBike_windshield:002%2
{
nSurfaceLayers 1;
}
motorBike_rr-wh-rim:005%5
{
nSurfaceLayers 1;
}
motorBike_rr-wh-rim:010%10
{
nSurfaceLayers 1;
}
motorBike_fr-wh-rim:011%11
{
nSurfaceLayers 1;
}
motorBike_fr-wh-brake-disk:012%12
{
nSurfaceLayers 1;
}
motorBike_frame:016-shadow%13
{
nSurfaceLayers 1;
}
motorBike_rear-susp:014%14
{
nSurfaceLayers 1;
}
motorBike_rear-susp:014-shadow%15
{
nSurfaceLayers 1;
}
motorBike_frame:016%16
{
nSurfaceLayers 1;
}
motorBike_rr-wh-rim:005-shadow%17
{
nSurfaceLayers 1;
}
motorBike_rr-wh-chain-hub:022%22
{
nSurfaceLayers 1;
}
motorBike_rearseat%24
{
nSurfaceLayers 1;
}
motorBike_frt-fairing%25
{
nSurfaceLayers 1;
}
motorBike_windshield%26
{
nSurfaceLayers 1;
}
motorBike_headlights%27
{
nSurfaceLayers 1;
}
motorBike_driversseat%28
{
nSurfaceLayers 1;
}
motorBike_rear-body%29
{
nSurfaceLayers 1;
}
motorBike_fuel-tank%30
{
nSurfaceLayers 1;
}
motorBike_exhaust%31
{
nSurfaceLayers 1;
}
motorBike_rr-wh-rim%32
{
nSurfaceLayers 1;
}
motorBike_fr-mud-guard%33
{
nSurfaceLayers 1;
}
motorBike_fr-wh-rim%34
{
nSurfaceLayers 1;
}
motorBike_fr-wh-brake-disk%35
{
nSurfaceLayers 1;
}
motorBike_fr-brake-caliper%36
{
nSurfaceLayers 1;
}
motorBike_fr-wh-tyre%37
{
nSurfaceLayers 1;
}
motorBike_hbars%38
{
nSurfaceLayers 1;
}
motorBike_fr-forks%39
{
nSurfaceLayers 1;
}
motorBike_chain%40
{
nSurfaceLayers 1;
}
motorBike_rr-wh-tyre%41
{
nSurfaceLayers 1;
}
motorBike_square-dial%42
{
nSurfaceLayers 1;
}
motorBike_round-dial%43
{
nSurfaceLayers 1;
}
motorBike_dial-holder%44
{
nSurfaceLayers 1;
}
motorBike_rear-susp%45
{
nSurfaceLayers 1;
}
motorBike_rear-brake-lights%46
{
nSurfaceLayers 1;
}
motorBike_rear-light-bracket%47
{
nSurfaceLayers 1;
}
motorBike_frame%48
{
nSurfaceLayers 1;
}
motorBike_rear-mud-guard%49
{
nSurfaceLayers 1;
}
motorBike_rear-susp-spring-damp%50
{
nSurfaceLayers 1;
}
motorBike_fairing-inner-plate%51
{
nSurfaceLayers 1;
}
motorBike_clutch-housing%52
{
nSurfaceLayers 1;
}
motorBike_radiator%53
{
nSurfaceLayers 1;
}
motorBike_water-pipe%54
{
nSurfaceLayers 1;
}
motorBike_water-pump%55
{
nSurfaceLayers 1;
}
motorBike_engine%56
{
nSurfaceLayers 1;
}
motorBike_rear-shock-link%57
{
nSurfaceLayers 1;
}
motorBike_rear-brake-fluid-pot-bracket%58
{
nSurfaceLayers 1;
}
motorBike_rear-brake-fluid-pot%59
{
nSurfaceLayers 1;
}
motorBike_footpeg%60
{
nSurfaceLayers 1;
}
motorBike_rr-wh-chain-hub%61
{
nSurfaceLayers 1;
}
motorBike_rear-brake-caliper%62
{
nSurfaceLayers 1;
}
motorBike_rider-helmet%65
{
nSurfaceLayers 1;
}
motorBike_rider-visor%66
{
nSurfaceLayers 1;
}
motorBike_rider-boots%67
{
nSurfaceLayers 1;
}
motorBike_rider-gloves%68
{
nSurfaceLayers 1;
}
motorBike_rider-body%69
{
nSurfaceLayers 1;
}
motorBike_frame:0%70
{
nSurfaceLayers 1;
}
motorBike_frt-fairing:001-shadow%74
{
nSurfaceLayers 1;
}
motorBike_windshield-shadow%75
{
nSurfaceLayers 1;
}
motorBike_fr-mud-guard-shadow%81
{
nSurfaceLayers 1;
}
motorBike_fr-wh-brake-disk-shadow%83
{
nSurfaceLayers 1;
}
motorBike_rear-mud-guard-shadow%84
{
nSurfaceLayers 1;
}
motorBike_rear-susp-spring-damp-shadow%85
{
nSurfaceLayers 1;
}
motorBike_radiator-shadow%86
{
nSurfaceLayers 1;
}
motorBike_rear-shock-link-shadow%87
{
nSurfaceLayers 1;
}
motorBike_rear-brake-fluid-pot-bracket-shadow%88
{
nSurfaceLayers 1;
}
motorBike_rr-wh-chain-hub-shadow%89
{
nSurfaceLayers 1;
}
}
// Expansion factor for layer mesh
expansionRatio 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.
finalLayerRatio 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.
minThickness 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.
nGrow 1;
// Advanced settings
//- When not to extrude surface. 0 is flat surface, 90 is when two faces
// make straight angle.
featureAngle 30;
//- Maximum number of snapping relaxation iterations. Should stop
// before upon reaching a correct mesh.
nRelaxIter 3;
// 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
minMedianAxisAngle 130;
// Create buffer region for new layer terminations
nBufferCellsNoExtrude 0;
}
// Generic mesh quality settings. At any undoable phase these determine
// where to undo.
meshQualityControls
{
//- Maximum non-orthogonality allowed. Set to 180 to disable.
maxNonOrtho 65;
//- Max skewness allowed. Set to <0 to disable.
maxBoundarySkewness 20;
maxInternalSkewness 4;
//- Max concaveness allowed. Is angle (in degrees) below which concavity
// is allowed. 0 is straight face, <0 would be convex face.
// Set to 180 to disable.
maxConcave 80;
//- Minimum projected area v.s. actual area. Set to -1 to disable.
minFlatness 0.5;
//- Minimum pyramid volume. Is absolute volume of cell pyramid.
// Set to very negative number (e.g. -1E30) to disable.
minVol 1e-13;
//- Minimum face area. Set to <0 to disable.
minArea -1;
//- Minimum face twist. Set to <-1 to disable. dot product of face normal
//- and face centre triangles normal
minTwist 0.02;
//- minimum normalised cell determinant
//- 1 = hex, <= 0 = folded or flattened illegal cell
minDeterminant 0.001;
//- minFaceWeight (0 -> 0.5)
minFaceWeight 0.02;
//- minVolRatio (0 -> 1)
minVolRatio 0.01;
//must be >0 for Fluent compatibility
minTriangleTwist -1;
// Advanced
//- Number of error distribution iterations
nSmoothScale 4;
//- amount to scale back displacement at error points
errorReduction 0.75;
}
// Advanced
// Flags for optional output
// 0 : only write final meshes
// 1 : write intermediate meshes
// 2 : write volScalarField with cellLevel for postprocessing
// 4 : write current intersections as .obj files
debug 0;
// Merge tolerance. Is fraction of overall bounding box of initial mesh.
// Note: the write tolerance needs to be higher than this.
mergeTolerance 1E-6;
// ************************************************************************* //