zhyang-dev/openfoam
1
0
Fork 0
mirror of https://develop.openfoam.com/Development/openfoam.git synced 2025-11-28 03:28:01 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

fixed layer addition iterations

Browse Source
This commit is contained in:
mattijs
2009-04-09 13:04:23 +01:00
parent db3b8bafdb
commit c203c3d6fd
7 changed files with 229 additions and 61 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
applications/utilities/mesh/generation/snappyHexMesh/snappyHexMeshDict
View File

@ -274,6 +274,14 @@ addLayersControls
// Create buffer region for new layer terminations
nBufferCellsNoExtrude 0;
// Overall max number of layer addition iterations
nLayerIter 50;
// Max number of iterations after which relaxed meshQuality controls
// get used.
nRelaxedIter 20;
}
@ -335,6 +343,16 @@ meshQualityControls
nSmoothScale 4;
//- amount to scale back displacement at error points
errorReduction 0.75;
// Optional : some meshing phases allow usage of relaxed rules.
// See e.g. addLayersControls::nRelaxedIter.
relaxed
{
//- Maximum non-orthogonality allowed. Set to 180 to disable.
maxNonOrtho 75;
}
}

15
src/autoMesh/autoHexMesh/autoHexMeshDriver/autoLayerDriver.C
View File

@ -2292,7 +2292,7 @@ bool Foam::autoLayerDriver::cellsUseFace
Foam::label Foam::autoLayerDriver::checkAndUnmark
(
const addPatchCellLayer& addLayer,
const dictionary& motionDict,
const dictionary& meshQualityDict,
const indirectPrimitivePatch& pp,
const fvMesh& newMesh,
@ -2304,7 +2304,7 @@ Foam::label Foam::autoLayerDriver::checkAndUnmark
// Check the resulting mesh for errors
Info<< nl << "Checking mesh with layer ..." << endl;
faceSet wrongFaces(newMesh, "wrongFaces", newMesh.nFaces()/1000);
motionSmoother::checkMesh(false, newMesh, motionDict, wrongFaces);
motionSmoother::checkMesh(false, newMesh, meshQualityDict, wrongFaces);
Info<< "Detected " << returnReduce(wrongFaces.size(), sumOp<label>())
<< " illegal faces"
<< " (concave, zero area or negative cell pyramid volume)"
@ -2709,7 +2709,7 @@ void Foam::autoLayerDriver::addLayers
boolList flaggedCells;
boolList flaggedFaces;
while (true)
for (label iter = 0; iter < layerParams.nLayerIter(); iter++)
{
// Make sure displacement is equal on both sides of coupled patches.
syncPatchDisplacement
@ -2951,10 +2951,17 @@ void Foam::autoLayerDriver::addLayers
}
// Unset the extrusion at the pp.
const dictionary& meshQualityDict =
(
iter < layerParams.nRelaxedIter()
? motionDict
: motionDict.subDict("relaxed")
);
label nTotChanged = checkAndUnmark
(
addLayer,
motionDict,
meshQualityDict,
pp,
newMesh,

38
src/autoMesh/autoHexMesh/autoHexMeshDriver/layerParameters/layerParameters.C
View File

@ -211,8 +211,24 @@ Foam::layerParameters::layerParameters
(
readLabel(dict.lookup("nBufferCellsNoExtrude"))
),
nSnap_(readLabel(dict.lookup("nSnap")))
{}
nSnap_(readLabel(dict.lookup("nSnap"))),
nLayerIter_(readLabel(dict.lookup("nLayerIter"))),
nRelaxedIter_(labelMax)
{
if (dict.found("nRelaxedIter"))
{
dict.lookup("nRelaxedIter") >> nRelaxedIter_;
}
if (nLayerIter_ < 0 || nRelaxedIter_ < 0)
{
FatalErrorIn("layerParameters::layerParameters(..)")
<< "Layer iterations should be >= 0." << endl
<< "nLayerIter:" << nLayerIter_
<< " nRelaxedIter:" << nRelaxedIter_
<< exit(FatalError);
}
}
// Construct from dictionary
@ -276,8 +292,24 @@ Foam::layerParameters::layerParameters
(
readLabel(dict.lookup("nBufferCellsNoExtrude"))
),
nSnap_(readLabel(dict.lookup("nRelaxIter")))
nSnap_(readLabel(dict.lookup("nRelaxIter"))),
nLayerIter_(readLabel(dict.lookup("nLayerIter"))),
nRelaxedIter_(labelMax)
{
if (dict.found("nRelaxedIter"))
{
dict.lookup("nRelaxedIter") >> nRelaxedIter_;
}
if (nLayerIter_ < 0 || nRelaxedIter_ < 0)
{
FatalErrorIn("layerParameters::layerParameters(..)")
<< "Layer iterations should be >= 0." << endl
<< "nLayerIter:" << nLayerIter_
<< " nRelaxedIter:" << nRelaxedIter_
<< exit(FatalError);
}
const dictionary& layersDict = dict.subDict("layers");
forAll(boundaryMesh, patchI)

50
src/autoMesh/autoHexMesh/autoHexMeshDriver/layerParameters/layerParameters.H
View File

@ -105,6 +105,10 @@ class layerParameters
label nSnap_;
label nLayerIter_;
label nRelaxedIter_;
// Private Member Functions
@ -196,26 +200,20 @@ public:
return nGrow_;
}
// Number of smoothing iterations of surface normals
//- Number of smoothing iterations of surface normals
label nSmoothSurfaceNormals() const
{
return nSmoothSurfaceNormals_;
}
// Number of smoothing iterations of interior mesh movement
// direction
//- Number of smoothing iterations of interior mesh movement
// direction
label nSmoothNormals() const
{
return nSmoothNormals_;
}
// Smooth layer thickness over surface patches
label nSmoothThickness() const
{
return nSmoothThickness_;
}
// Stop layer growth on highly warped cells
//- Stop layer growth on highly warped cells
scalar maxFaceThicknessRatio() const
{
return maxFaceThicknessRatio_;
@ -226,20 +224,26 @@ public:
return layerTerminationCos_;
}
// Reduce layer growth where ratio thickness to medial
// distance is large
//- Smooth layer thickness over surface patches
label nSmoothThickness() const
{
return nSmoothThickness_;
}
//- Reduce layer growth where ratio thickness to medial
// distance is large
scalar maxThicknessToMedialRatio() const
{
return maxThicknessToMedialRatio_;
}
// Angle used to pick up medial axis points
//- Angle used to pick up medial axis points
scalar minMedianAxisAngleCos() const
{
return minMedianAxisAngleCos_;
}
// Create buffer region for new layer terminations
//- Create buffer region for new layer terminations
label nBufferCellsNoExtrude() const
{
return nBufferCellsNoExtrude_;
@ -249,6 +253,24 @@ public:
{
return nSnap_;
}
// Overall
//- Number of overall layer addition iterations
label nLayerIter() const
{
return nLayerIter_;
}
//- Number of iterations after which relaxed motion rules
// are to be used.
label nRelaxedIter() const
{
return nRelaxedIter_;
}
};

28
src/dynamicMesh/motionSmoother/motionSmoother.C
View File

@ -825,6 +825,28 @@ bool Foam::motionSmoother::scaleMesh
const bool smoothMesh,
const label nAllowableErrors
)
{
return scaleMesh
(
checkFaces,
baffles,
paramDict_,
paramDict_,
smoothMesh,
nAllowableErrors
);
}
bool Foam::motionSmoother::scaleMesh
(
labelList& checkFaces,
const List<labelPair>& baffles,
const dictionary& paramDict,
const dictionary& meshQualityDict,
const bool smoothMesh,
const label nAllowableErrors
)
{
if (!smoothMesh && adaptPatchIDs_.empty())
{
@ -859,9 +881,9 @@ bool Foam::motionSmoother::scaleMesh
}
const scalar errorReduction =
readScalar(paramDict_.lookup("errorReduction"));
readScalar(paramDict.lookup("errorReduction"));
const label nSmoothScale =
readLabel(paramDict_.lookup("nSmoothScale"));
readLabel(paramDict.lookup("nSmoothScale"));
// Note: displacement_ should already be synced already from setDisplacement
@ -921,7 +943,7 @@ bool Foam::motionSmoother::scaleMesh
// Check. Returns parallel number of incorrect faces.
faceSet wrongFaces(mesh_, "wrongFaces", mesh_.nFaces()/100+100);
checkMesh(false, mesh_, paramDict_, checkFaces, baffles, wrongFaces);
checkMesh(false, mesh_, meshQualityDict, checkFaces, baffles, wrongFaces);
if (returnReduce(wrongFaces.size(), sumOp<label>()) <= nAllowableErrors)
{

18
src/dynamicMesh/motionSmoother/motionSmoother.H
View File

@ -52,7 +52,7 @@ Description
@endverbatim
Note
Shared points (parallel): a processor can have points which are part of
- Shared points (parallel): a processor can have points which are part of
pp on another processor but have no pp itself (i.e. it has points
and/or edges but no faces of pp). Hence we have to be careful when e.g.
synchronising displacements that the value from the processor which has
@ -61,10 +61,13 @@ Note
else. The combine operator used will give preference to non-zero
values.
Various routines take baffles. These are sets of boundary faces that
- Various routines take baffles. These are sets of boundary faces that
are treated as a single internal face. This is a hack used to apply
movement to internal faces.
- Mesh constraints are looked up from the supplied dictionary. (uses
recursive lookup)
SourceFiles
motionSmoother.C
motionSmootherTemplates.C
@ -395,6 +398,17 @@ public:
const label nAllow = 0
);
//- Move mesh with externally provided mesh constraints
bool scaleMesh
(
labelList& checkFaces,
const List<labelPair>& baffles,
const dictionary& paramDict,
const dictionary& meshQualityDict,
const bool smoothMesh = true,
const label nAllow = 0
);
//- Update topology
void updateMesh();

123
src/dynamicMesh/motionSmoother/motionSmootherCheck.C
View File

@ -28,19 +28,6 @@ License
#include "polyMeshGeometry.H"
#include "IOmanip.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
bool Foam::motionSmoother::checkMesh
@ -74,17 +61,50 @@ bool Foam::motionSmoother::checkMesh
labelHashSet& wrongFaces
)
{
const scalar maxNonOrtho(readScalar(dict.lookup("maxNonOrtho")));
const scalar minVol(readScalar(dict.lookup("minVol")));
const scalar maxConcave(readScalar(dict.lookup("maxConcave")));
const scalar minArea(readScalar(dict.lookup("minArea")));
const scalar maxIntSkew(readScalar(dict.lookup("maxInternalSkewness")));
const scalar maxBounSkew(readScalar(dict.lookup("maxBoundarySkewness")));
const scalar minWeight(readScalar(dict.lookup("minFaceWeight")));
const scalar minVolRatio(readScalar(dict.lookup("minVolRatio")));
const scalar minTwist(readScalar(dict.lookup("minTwist")));
const scalar minTriangleTwist(readScalar(dict.lookup("minTriangleTwist")));
const scalar minDet(readScalar(dict.lookup("minDeterminant")));
const scalar maxNonOrtho
(
readScalar(dict.lookup("maxNonOrtho", true))
);
const scalar minVol
(
readScalar(dict.lookup("minVol", true))
);
const scalar maxConcave
(
readScalar(dict.lookup("maxConcave", true))
);
const scalar minArea
(
readScalar(dict.lookup("minArea", true))
);
const scalar maxIntSkew
(
readScalar(dict.lookup("maxInternalSkewness", true))
);
const scalar maxBounSkew
(
readScalar(dict.lookup("maxBoundarySkewness", true))
);
const scalar minWeight
(
readScalar(dict.lookup("minFaceWeight", true))
);
const scalar minVolRatio
(
readScalar(dict.lookup("minVolRatio", true))
);
const scalar minTwist
(
readScalar(dict.lookup("minTwist", true))
);
const scalar minTriangleTwist
(
readScalar(dict.lookup("minTriangleTwist", true))
);
const scalar minDet
(
readScalar(dict.lookup("minDeterminant", true))
);
label nWrongFaces = 0;
@ -389,17 +409,50 @@ bool Foam::motionSmoother::checkMesh
labelHashSet& wrongFaces
)
{
const scalar maxNonOrtho(readScalar(dict.lookup("maxNonOrtho")));
const scalar minVol(readScalar(dict.lookup("minVol")));
const scalar maxConcave(readScalar(dict.lookup("maxConcave")));
const scalar minArea(readScalar(dict.lookup("minArea")));
const scalar maxIntSkew(readScalar(dict.lookup("maxInternalSkewness")));
const scalar maxBounSkew(readScalar(dict.lookup("maxBoundarySkewness")));
const scalar minWeight(readScalar(dict.lookup("minFaceWeight")));
const scalar minVolRatio(readScalar(dict.lookup("minVolRatio")));
const scalar minTwist(readScalar(dict.lookup("minTwist")));
const scalar minTriangleTwist(readScalar(dict.lookup("minTriangleTwist")));
const scalar minDet(readScalar(dict.lookup("minDeterminant")));
const scalar maxNonOrtho
(
readScalar(dict.lookup("maxNonOrtho", true))
);
const scalar minVol
(
readScalar(dict.lookup("minVol", true))
);
const scalar maxConcave
(
readScalar(dict.lookup("maxConcave", true))
);
const scalar minArea
(
readScalar(dict.lookup("minArea", true))
);
const scalar maxIntSkew
(
readScalar(dict.lookup("maxInternalSkewness", true))
);
const scalar maxBounSkew
(
readScalar(dict.lookup("maxBoundarySkewness", true))
);
const scalar minWeight
(
readScalar(dict.lookup("minFaceWeight", true))
);
const scalar minVolRatio
(
readScalar(dict.lookup("minVolRatio", true))
);
const scalar minTwist
(
readScalar(dict.lookup("minTwist", true))
);
const scalar minTriangleTwist
(
readScalar(dict.lookup("minTriangleTwist", true))
);
const scalar minDet
(
readScalar(dict.lookup("minDeterminant", true))
);
label nWrongFaces = 0;