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ENH: snappyHexMesh: directional refinement tutorial

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This commit is contained in:
mattijs 2017-12-28 16:28:29 +00:00
parent 2a97365428
commit 7b4bf88891
20 changed files with 1193 additions and 0 deletions
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43
tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/0/T Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object T;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 0 0 1 0 0 0];
internalField uniform 265;
boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"
wall
{
type fixedValue;
value uniform 265;
}
twoFridgeFreezers_seal_0
{
type fixedValue;
value uniform 303;
}
twoFridgeFreezers_herring_1
{
$twoFridgeFreezers_seal_0;
}
}
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/0/U Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volVectorField;
object U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 1 -1 0 0 0 0];
internalField uniform (0 0 0);
boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"
wall
{
type noSlip;
}
}
// ************************************************************************* //

35
tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/0/alphat Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
location "0";
object alphat;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 2 -1 0 0 0 0];
internalField uniform 0;
boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"
wall
{
type alphatJayatillekeWallFunction;
Prt 0.85;
value uniform 0;
}
}
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/0/epsilon Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
location "0";
object epsilon;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 2 -3 0 0 0 0];
internalField uniform 0.01;
boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"
wall
{
type epsilonWallFunction;
value uniform 0.01;
}
}
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/0/k Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
location "0";
object k;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 2 -2 0 0 0 0];
internalField uniform 0.1;
boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"
wall
{
type kqRWallFunction;
value uniform 0.1;
}
}
// ************************************************************************* //

34
tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/0/nut Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
location "0";
object nut;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 2 -1 0 0 0 0];
internalField uniform 0;
boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"
wall
{
type nutkWallFunction;
value uniform 0;
}
}
// ************************************************************************* //

32
tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/0/p Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object p;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 2 -2 0 0 0 0];
internalField uniform 0;
boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"
wall
{
type calculated;
value $internalField;
}
}
// ************************************************************************* //

33
tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/0/p_rgh Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object p_rgh;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 2 -2 0 0 0 0];
internalField uniform 0;
boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"
wall
{
type fixedFluxPressure;
rho rhok;
value uniform 0;
}
}
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/Allrun Executable file
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#!/bin/sh
cd ${0%/*} || exit 1 # Run from this directory
. $WM_PROJECT_DIR/bin/tools/RunFunctions # Tutorial run functions
runApplication blockMesh
# Serial
runApplication snappyHexMesh -overwrite
runApplication $(getApplication)
## Parallel
#runApplication decomposePar -fileHandler collated
#runParallel snappyHexMesh -overwrite -fileHandler collated
## Remove any include files from the field dictionaries
#( mkdir -p processors/0 && \
# cd 0 && \
# for f in *; do [ -f "$f" ] && \
# foamDictionary "$f" > "../processors/0/$f"; done \
#)
#
#runParallel $(getApplication) -fileHandler collated
#runApplication reconstructParMesh -constant -mergeTol 1e-6
#runApplication reconstructPar
#------------------------------------------------------------------------------

21
tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/constant/g Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class uniformDimensionedVectorField;
location "constant";
object g;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 1 -2 0 0 0 0];
value (0 0 -9.81);
// ************************************************************************* //

35
tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/constant/transportProperties Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object transportProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
transportModel Newtonian;
// Laminar viscosity
nu 1e-05;
// Thermal expansion coefficient
beta 3e-03;
// Reference temperature
TRef 300;
// Laminar Prandtl number
Pr 0.7;
// Turbulent Prandtl number
Prt 0.85;
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/constant/triSurface/fridgeA.eMesh Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class featureEdgeMesh;
object points;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Points
(
(1.99 1.99 0.01) //0
(3.01 1.99 0.01) //1
(3.01 3.01 0.01) //2
(1.99 3.01 0.01) //3
(1.99 1.99 2.01) //4
(3.01 1.99 2.01) //5
(3.01 3.01 2.01) //6
(1.99 3.01 2.01) //7
)
// Edges
(
(0 1)
(1 2)
(2 3)
(3 0)
(4 5)
(5 6)
(6 7)
(7 4)
(0 4)
(1 5)
(2 6)
(3 7)
)
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/constant/turbulenceProperties Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "constant";
object turbulenceProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
simulationType RAS;
RAS
{
RASModel kEpsilon;
turbulence on;
printCoeffs on;
}
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/system/blockMeshDict Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
scale 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 10) simpleGrading (1 1 1)
);
edges
(
);
boundary
(
maxY
{
type symmetryPlane;
faces
(
(3 7 6 2)
);
}
minX
{
type symmetryPlane;
faces
(
(0 4 7 3)
);
}
maxX
{
type symmetryPlane;
faces
(
(2 6 5 1)
);
}
minY
{
type symmetryPlane;
faces
(
(1 5 4 0)
);
}
ground
{
type wall;
faces
(
(0 3 2 1)
);
}
maxZ
{
type symmetryPlane;
faces
(
(4 5 6 7)
);
}
);
mergePatchPairs
(
);
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/system/controlDict Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
application buoyantBoussinesqSimpleFoam;
startFrom startTime;
startTime 0;
stopAt endTime;
endTime 2000;
deltaT 1;
writeControl timeStep;
writeInterval 100;
purgeWrite 0;
writeFormat ascii;
writePrecision 6;
writeCompression off;
timeFormat general;
timePrecision 6;
runTimeModifiable true;
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/system/decomposeParDict Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object decomposeParDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
numberOfSubdomains 2;
method scotch;
//coeffs
//{
// n (3 2 1);
// delta 0.001;
// order xyz;
// dataFile "cellDecomposition";
//}
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/system/fvSchemes Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object fvSchemes;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
ddtSchemes
{
default steadyState;
}
gradSchemes
{
default Gauss linear;
}
divSchemes
{
default none;
div(phi,U) bounded Gauss upwind;
div(phi,T) bounded Gauss upwind;
div(phi,k) bounded Gauss upwind;
div(phi,epsilon) bounded Gauss upwind;
div(phi,R) bounded Gauss upwind;
div(R) Gauss linear;
div((nuEff*dev2(T(grad(U))))) Gauss linear;
}
laplacianSchemes
{
default Gauss linear limited corrected 0.33;
laplacian(diffusivity,cellDisplacement) Gauss linear corrected;
}
interpolationSchemes
{
default linear;
}
snGradSchemes
{
default limited corrected 0.33;
}
// ************************************************************************* //

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tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/system/fvSolution Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
solvers
{
p_rgh
{
solver PCG;
preconditioner DIC;
tolerance 1e-08;
relTol 0.01;
}
"(U|T|k|epsilon)"
{
solver PBiCGStab;
preconditioner DILU;
tolerance 1e-07;
relTol 0.1;
}
cellDisplacement
{
$p_rgh;
relTol 0;
}
}
SIMPLE
{
nNonOrthogonalCorrectors 2;
pRefCell 0;
pRefValue 0;
residualControl
{
p_rgh 1e-2;
U 1e-4;
T 1e-3;
// possibly check turbulence fields
"(k|epsilon|omega)" 1e-3;
}
}
relaxationFactors
{
fields
{
p_rgh 0.7;
}
equations
{
U 0.2;
T 0.5;
"(k|epsilon)" 0.7;
}
}
// ************************************************************************* //

21
tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/system/meshQualityDict Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object meshQualityDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Include defaults parameters from master dictionary
#includeEtc "caseDicts/meshQualityDict"
// ************************************************************************* //

420
tutorials/mesh/snappyHexMesh/iglooWithFridgesDirectionalRefinement/system/snappyHexMeshDict Normal file
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/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: plus |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object snappyHexMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// 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
{
igloo
{
type searchableSphere;
centre (3 3 0);
radius 4;
}
box1
{
type searchableBox;
min (0 0 0);
max (1 1 1);
}
twoFridgeFreezers
{
type searchableSurfaceCollection;
mergeSubRegions true;
seal
{
surface box1;
scale (1.0 1.0 2.1);
transform
{
coordinateSystem
{
type cartesian;
origin (2 2 0);
coordinateRotation
{
type axesRotation;
e1 (1 0 0);
e3 (0 0 1);
}
}
}
}
herring
{
surface box1;
scale (1.0 1.0 2.1);
transform
{
coordinateSystem
{
type cartesian;
origin (3.5 3 0);
coordinateRotation
{
type axesRotation;
e1 (1 0 0);
e3 (0 0 1);
}
}
}
}
}
// For directional refinement
dirRefineBox1
{
type searchableBox;
min (-10 -10 -10);
max ( 10 10 0.5);
}
dirRefineBox2
{
type searchableBox;
min (-10 -10 -10);
max ( 10 10 0.25);
}
};
// Settings for the castellatedMesh generation.
castellatedMeshControls
{
// Refinement parameters
// ~~~~~~~~~~~~~~~~~~~~~
// If local number of cells is >= maxLocalCells on any processor
// switches from from refinement followed by balancing
// (current method) to (weighted) balancing before refinement.
maxLocalCells 100000;
// 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 100;
// 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 "fridgeA.eMesh";
levels ((0.01 3));
}
);
// 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
{
twoFridgeFreezers
{
// Surface-wise min and max refinement level
level (2 2);
regions
{
// Region-wise override
"cook.*"
{
level (3 3);
}
}
// Optional specification of patch type (default is wall). No
// constraint types (cyclic, symmetry) etc. are allowed.
patchInfo
{
type wall;
}
}
"iglo.*"
{
// Surface-wise min and max refinement level
level (1 1);
// Optional specification of patch type (default is wall). No
// constraint types (cyclic, symmetry) etc. are allowed.
patchInfo
{
type wall;
}
}
}
// 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
{
dirRefineBox1
{
mode inside;
// Disable uniform refinement
levels ((10000 0));
// Optional: directional refinement
// (after all other refinement). Directional refinement
// for all cells according to 'mode' ('inside' or 'outside';
// 'distance' not supported) and within certain range. E.g.
// - for all cells with level 0-100
// - do two splits in z direction. The resulting mesh is
// no longer compatible with e.g. dynamic refinement/unrefinement.
levelIncrement (0 0 (0 0 1));
}
dirRefineBox2
{
mode inside;
// Disable uniform refinement
levels ((10000 0));
// Optional: directional refinement
// (after all other refinement). Directional refinement
// for all cells according to 'mode' ('inside' or 'outside';
// 'distance' not supported) and within certain range. E.g.
// - for all cells with level 0-100
// - do two splits in z direction. The resulting mesh is
// no longer compatible with e.g. dynamic refinement/unrefinement.
levelIncrement (0 1 (0 0 2));
}
}
// 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);
// Whether any faceZones (as specified in the refinementSurfaces)
// are only on the boundary of corresponding cellZones or also allow
// free-standing zone faces. Not used if there are no faceZones.
allowFreeStandingZoneFaces true;
}
// 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 2.0;
//- Number of mesh displacement relaxation iterations.
nSolveIter 30;
//- Maximum number of snapping relaxation iterations. Should stop
// before upon reaching a correct mesh.
nRelaxIter 5;
// Feature snapping
//- Number of feature edge snapping iterations.
// Leave out altogether to disable.
nFeatureSnapIter 10;
//- Detect (geometric) features by sampling the surface (default=false)
implicitFeatureSnap true;
//- Use castellatedMeshControls::features (default = true)
explicitFeatureSnap false;
}
// 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
{
"two.*"
{
nSurfaceLayers 3;
}
ground
{
nSurfaceLayers 3;
}
igloo
{
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.
// See relativeSizes parameter.
finalLayerThickness 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.
// See relativeSizes parameter.
minThickness 0.05;
// 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 0;
// 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;
// Stop layer growth on highly warped cells
maxFaceThicknessRatio 0.5;
// Smooth layer thickness over surface patches
nSmoothThickness 10;
//- Use displacementMotionSolver to shrink mesh
meshShrinker displacementMotionSolver;
//- Use laplacian for shrinking
solver displacementLaplacian;
displacementLaplacianCoeffs
{
diffusivity quadratic inverseDistance ("two.*" igloo);
}
// 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;
}
// Generic mesh quality settings. At any undoable phase these determine
// where to undo.
meshQualityControls
{
#include "meshQualityDict"
// Advanced
//- Number of error distribution iterations
nSmoothScale 4;
//- Amount to scale back displacement at error points
errorReduction 0.75;
}
// Advanced
// Merge tolerance. Is fraction of overall bounding box of initial mesh.
// Note: the write tolerance needs to be higher than this.
mergeTolerance 1e-6;
writeFlags (scalarLevels);
// ************************************************************************* //