meshOptimizer Class Reference

Collaboration diagram for meshOptimizer:

Data Structures
class	laplaceSmoother

Public Member Functions
	meshOptimizer (polyMeshGen &mesh)
	Construct from mesh. More...
	~meshOptimizer ()
void	enforceConstraints (const word subsetName="badPoints")
template<class labelListType >
void	lockCells (const labelListType &)
	lock the cells which shall not be modified More...
void	lockCellsInSubset (const word &subsetName)
template<class labelListType >
void	lockFaces (const labelListType &)
	lock the faces whih shall not be modified More...
void	lockFacesInSubset (const word &subsetName)
template<class labelListType >
void	lockPoints (const labelListType &)
	lock points which shall not be moved More...
void	lockPointsInSubset (const word &subsetName)
void	removeUserConstraints ()
	reset to default constraints More...
void	optimizeSurface (const meshOctree &)
	smooth surface vertices More...
void	untangleMeshFV (const label maxNumGlobalIterations=10, const label maxNumIterations=50, const label maxNumSurfaceIterations=2, const bool relaxedCheck=false)
void	optimizeBoundaryLayer (const bool addBufferLayer=true)
void	untangleBoundaryLayer ()
void	optimizeLowQualityFaces (const label maxNumIterations=10)
void	optimizeMeshNearBoundaries (const label maxNumIterations=10, const label numLayersOfCells=2)
void	optimizeMeshFV (const label numLaplaceIterations=5, const label maxNumGlobalIterations=10, const label maxNumIterations=50, const label maxNumSurfaceIterations=2)
	final optimisation More...
void	optimizeMeshFVBestQuality (const label maxNumIterations=50, const scalar threshold=0.1)
	greedy optimisation until the mesh can be improved More...

Private Types
enum	vertexType_ {   INSIDE = 1, BOUNDARY = 2, EDGE = 4, CORNER = 8,   PARALLELBOUNDARY = 16, LOCKED = 32 }

Private Member Functions
const meshSurfaceEngine &	meshSurface () const
	return mesh surface More...
void	clearSurface ()
label	findBadFaces (labelHashSet &, const boolList &) const
	find problematic faces More...
label	findLowQualityFaces (labelHashSet &, const boolList &) const
void	calculatePointLocations ()
	mark point locations More...
	meshOptimizer (const meshOptimizer &)
	Disallow default bitwise copy construct. More...
void	operator= (const meshOptimizer &)
	Disallow default bitwise assignment. More...

Private Attributes
polyMeshGen &	mesh_
	reference to the mesh More...
List< direction >	vertexLocation_
	location of vertex (internal, boundary, edge, corner) More...
labelLongList	lockedFaces_
	locked faces which shall not be changed More...
meshSurfaceEngine *	msePtr_
	mesh surface More...
bool	enforceConstraints_
	enforce constraints More...
word	badPointsSubsetName_
	name of the subset contaning tangled points More...

Detailed Description

Definition at line 60 of file meshOptimizer.H.

Member Enumeration Documentation

vertexType_

enum vertexType_

private

Enumerator
INSIDE
BOUNDARY
EDGE
CORNER
PARALLELBOUNDARY
LOCKED

Definition at line 191 of file meshOptimizer.H.

Constructor & Destructor Documentation

meshOptimizer() [1/2]

meshOptimizer ( const meshOptimizer &  )

private

Disallow default bitwise copy construct.

meshOptimizer() [2/2]

meshOptimizer

(

polyMeshGen &

mesh

)

Construct from mesh.

Definition at line 171 of file meshOptimizer.C.

References meshOptimizer::calculatePointLocations().

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~meshOptimizer()

~meshOptimizer

(

)

Definition at line 185 of file meshOptimizer.C.

References meshOptimizer::clearSurface().

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Member Function Documentation

meshSurface()

const meshSurfaceEngine & meshSurface ( ) const

private

return mesh surface

Definition at line 45 of file meshOptimizer.C.

References meshOptimizer::mesh_, and meshOptimizer::msePtr_.

Referenced by meshOptimizer::calculatePointLocations(), meshOptimizer::optimizeBoundaryLayer(), and meshOptimizer::optimizeSurface().

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clearSurface()

void clearSurface ( )

private

Definition at line 53 of file meshOptimizer.C.

References Foam::deleteDemandDrivenData(), and meshOptimizer::msePtr_.

Referenced by meshOptimizer::optimizeBoundaryLayer(), meshOptimizer::optimizeSurface(), and meshOptimizer::~meshOptimizer().

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findBadFaces()

label findBadFaces ( labelHashSet &  badFaces, const boolList &  changedFace  ) const

private

find problematic faces

Definition at line 59 of file meshOptimizer.C.

References Foam::polyMeshGenChecks::checkCellPartTetrahedra(), Foam::polyMeshGenChecks::checkFaceAreas(), Foam::polyMeshGenChecks::checkFaceFlatness(), Foam::polyMeshGenChecks::checkFacePyramids(), HashTable::clear(), Foam::returnReduce(), and HashTable::size().

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findLowQualityFaces()

label findLowQualityFaces ( labelHashSet &  badFaces, const boolList &    ) const

private

Definition at line 108 of file meshOptimizer.C.

References Foam::polyMeshGenChecks::checkFaceDotProduct(), Foam::polyMeshGenChecks::checkFaceSkewness(), HashTable::clear(), Foam::returnReduce(), and HashTable::size().

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calculatePointLocations()

void calculatePointLocations ( )

private

mark point locations

mark boundary vertices

mark edge vertices

mark corner vertices

Definition at line 136 of file meshOptimizer.C.

References polyMeshGenCells::addressingData(), meshOptimizer::BOUNDARY, meshSurfaceEngine::boundaryPoints(), meshOptimizer::CORNER, meshSurfacePartitioner::corners(), meshOptimizer::EDGE, meshSurfacePartitioner::edgePoints(), forAll, forAllConstIter(), meshOptimizer::INSIDE, meshOptimizer::mesh_, meshOptimizer::meshSurface(), meshOptimizer::PARALLELBOUNDARY, UPstream::parRun(), polyMeshGenAddressing::pointAtProcs(), polyMeshGenPoints::points(), List::setSize(), pointFieldPMG::size(), VRWGraph::sizeOfRow(), and meshOptimizer::vertexLocation_.

Referenced by meshOptimizer::meshOptimizer(), and meshOptimizer::optimizeBoundaryLayer().

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operator=()

void operator= ( const meshOptimizer &  )

private

Disallow default bitwise assignment.

enforceConstraints()

void enforceConstraints

(

const word

subsetName = "badPoints"

)

Flag stopping the meshing process if it is not possible to untangle the surface without sacrificing geometry constraints Points which must be moved away from the required position are stored into a point subset

Definition at line 192 of file meshOptimizer.C.

References meshOptimizer::badPointsSubsetName_, and meshOptimizer::enforceConstraints_.

Referenced by tetMeshGenerator::optimiseFinalMesh(), voronoiMeshGenerator::optimiseFinalMesh(), and cartesianMeshGenerator::optimiseFinalMesh().

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lockCells()

void lockCells ( const labelListType &  l )

inline

lock the cells which shall not be modified

Finally, mark locked points and faces

Definition at line 39 of file meshOptimizerI.H.

References polyMeshGenFaces::addFaceSubset(), polyMeshGenFaces::addFaceToSubset(), polyMeshGenPoints::addPointSubset(), polyMeshGenPoints::addPointToSubset(), LongList< T, Offset >::append(), UPstream::blocking, LongList< T, Offset >::byteSize(), Foam::constant::universal::c, cells, polyMeshGenCells::cells(), f(), polyMeshGenFaces::faces(), forAll, meshOptimizer::LOCKED, meshOptimizer::lockedFaces_, meshOptimizer::mesh_, UPstream::parRun(), polyMeshGenFaces::procBoundaries(), faceListPMG::size(), and meshOptimizer::vertexLocation_.

Referenced by meshOptimizer::lockCellsInSubset(), meshOptimizer::lockPointsInSubset(), and meshOptimizer::optimizeBoundaryLayer().

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lockCellsInSubset()

void lockCellsInSubset

(

const word &

subsetName

)

lock cells which shall not be modified contained inside the specified subset

lock the points in the cell subset with the given name

Definition at line 199 of file meshOptimizer.C.

References polyMeshGenCells::cellsInSubset(), polyMeshGenCells::cellSubsetIndex(), Foam::endl(), meshOptimizer::lockCells(), meshOptimizer::mesh_, and Foam::Warning.

Referenced by main().

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lockFaces()

void lockFaces ( const labelListType &  lf )

inline

lock the faces whih shall not be modified

Finally, mark locked points and faces

Definition at line 123 of file meshOptimizerI.H.

References polyMeshGenFaces::addFaceSubset(), polyMeshGenFaces::addFaceToSubset(), polyMeshGenPoints::addPointSubset(), polyMeshGenPoints::addPointToSubset(), LongList< T, Offset >::append(), UPstream::blocking, LongList< T, Offset >::byteSize(), f(), polyMeshGenFaces::faces(), forAll, meshOptimizer::LOCKED, meshOptimizer::lockedFaces_, meshOptimizer::mesh_, UPstream::parRun(), polyMeshGenFaces::procBoundaries(), faceListPMG::size(), and meshOptimizer::vertexLocation_.

Referenced by meshOptimizer::lockFacesInSubset().

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lockFacesInSubset()

void lockFacesInSubset

(

const word &

subsetName

)

lock faces which shall not be modified stored in a face subset

lock the points in the face subset with the given name

Definition at line 217 of file meshOptimizer.C.

References Foam::endl(), polyMeshGenFaces::facesInSubset(), polyMeshGenFaces::faceSubsetIndex(), meshOptimizer::lockFaces(), meshOptimizer::mesh_, and Foam::Warning.

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lockPoints()

void lockPoints ( const labelListType &  lp )

inline

lock points which shall not be moved

Definition at line 203 of file meshOptimizerI.H.

References polyMeshGenPoints::addPointSubset(), polyMeshGenPoints::addPointToSubset(), LongList< T, Offset >::append(), UPstream::blocking, LongList< T, Offset >::byteSize(), f(), polyMeshGenFaces::faces(), forAll, meshOptimizer::LOCKED, meshOptimizer::mesh_, UPstream::parRun(), polyMeshGenFaces::procBoundaries(), and meshOptimizer::vertexLocation_.

Referenced by cartesianMeshGenerator::refBoundaryLayers(), tetMeshGenerator::refBoundaryLayers(), and voronoiMeshGenerator::refBoundaryLayers().

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lockPointsInSubset()

void lockPointsInSubset

(

const word &

subsetName

)

lock points which shall not be modified given as a point subset

lock the points in the point subset with the given name

Definition at line 235 of file meshOptimizer.C.

References Foam::endl(), meshOptimizer::lockCells(), meshOptimizer::mesh_, polyMeshGenPoints::pointsInSubset(), polyMeshGenPoints::pointSubsetIndex(), and Foam::Warning.

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removeUserConstraints()

void removeUserConstraints

(

)

reset to default constraints

unlock points

Definition at line 253 of file meshOptimizer.C.

References forAll, meshOptimizer::LOCKED, meshOptimizer::lockedFaces_, LongList< T, Offset >::setSize(), and meshOptimizer::vertexLocation_.

Referenced by meshOptimizer::optimizeBoundaryLayer(), and meshOptimizer::untangleBoundaryLayer().

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optimizeSurface()

void optimizeSurface

(

const meshOctree &

octree

)

smooth surface vertices

Definition at line 44 of file meshOptimizerOptimizeSurface.C.

References meshOptimizer::badPointsSubsetName_, meshOptimizer::clearSurface(), Foam::endl(), meshOptimizer::enforceConstraints_, Foam::Info, meshSurfaceMapper::mapVerticesOntoSurfacePatches(), and meshOptimizer::meshSurface().

Referenced by tetMeshGenerator::optimiseFinalMesh().

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untangleMeshFV()

void untangleMeshFV	(	const label	maxNumGlobalIterations = 10,
		const label	maxNumIterations = 50,
		const label	maxNumSurfaceIterations = 2,
		const bool	relaxedCheck = false
	)

performs mesh untangling based on detected negative normals a global iteration consists of maxNumIterations iterations when only internal points are moved and maxNumSurfaceIterations when surface points are moved

check if any points in the tet mesh shall not move

perform optimisation

create a tet mesh from the mesh and the labels of bad faces

construct tetMeshOptimisation and improve positions of points in the tet mesh

update points in the mesh from the coordinates in the tet mesh

perform optimisation

create tethrahedral mesh from the cells which shall be smoothed

contruct tetMeshOptimisation

the point stays in the plane determined by the point normal

move points without any constraints on the movement

move boundary points without any constraints

Definition at line 57 of file optimizeMeshFV.C.

References Foam::abort(), LongList< T, Offset >::append(), partTetMesh::createPolyMesh(), Foam::endl(), f(), polyMeshGenFaces::faces(), Foam::FatalError, FatalErrorIn, Foam::polyMeshGenChecks::findBadFaces(), Foam::polyMeshGenChecks::findBadFacesRelaxed(), forAll, forAllConstIter(), forAllRow, Foam::Info, polyMeshGenFaces::neighbour(), tetMeshOptimisation::optimiseBoundarySurfaceLaplace(), tetMeshOptimisation::optimiseBoundaryVolumeOptimizer(), tetMeshOptimisation::optimiseUsingKnuppMetric(), tetMeshOptimisation::optimiseUsingMeshUntangler(), tetMeshOptimisation::optimiseUsingVolumeOptimizer(), polyMeshGenPoints::points(), partTetMesh::points(), partTetMesh::pointTets(), polyMeshGenModifier::removeUnusedVertices(), Foam::returnReduce(), faceListPMG::size(), pointFieldPMG::size(), partTetMesh::smoothVertex(), partTetMesh::tets(), partTetMesh::updateOrigMesh(), and WarningIn.

Referenced by main(), meshOptimisation(), tetMeshGenerator::optimiseFinalMesh(), voronoiMeshGenerator::optimiseFinalMesh(), cartesianMeshGenerator::optimiseFinalMesh(), meshOptimizer::optimizeBoundaryLayer(), and meshOptimizer::untangleBoundaryLayer().

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optimizeBoundaryLayer()

void optimizeBoundaryLayer

(

const bool

addBufferLayer = true

)

performs optimisation of boundary layer cells it is applied to the first boundary layer, only

create a buffer layer which will not be modified by the smoother

check if the bnd layer is tangled somewhere

lock boundary layer points, faces and cells

optimize mesh quality

untangle remaining faces and lock the boundary layer cells

unlock bnd layer points

Definition at line 302 of file optimizeMeshFV.C.

References Foam::abort(), refineBoundaryLayers::activateSpecialMode(), polyMeshGenCells::addCellSubset(), polyMeshGenCells::addCellToSubset(), LongList< T, Offset >::append(), meshOptimizer::calculatePointLocations(), polyMeshGenCells::clearAddressingData(), meshOptimizer::clearSurface(), Foam::endl(), meshSurfaceEngine::faceOwners(), Foam::FatalError, forAll, dictionary::found(), objectRegistry::foundObject(), Foam::Info, boundaryLayerOptimisation::isBaseFace(), meshOptimizer::lockCells(), meshOptimizer::LOCKED, dictionary::lookup(), objectRegistry::lookupObject(), Foam::mag(), meshOptimizer::mesh_, meshOptimizer::meshSurface(), boundaryLayerOptimisation::optimiseLayer(), meshOptimizer::optimizeMeshFV(), polyMeshGenPoints::points(), Foam::readBool(), boundaryLayerOptimisation::readSettings(), refineBoundaryLayers::readSettings(), refineBoundaryLayers::refineLayers(), meshOptimizer::removeUserConstraints(), polyMeshGenPoints::returnTime(), pointFieldPMG::size(), dictionary::subDict(), meshOptimizer::untangleMeshFV(), and meshOptimizer::vertexLocation_.

Referenced by meshOptimisation(), tetMeshGenerator::optimiseFinalMesh(), voronoiMeshGenerator::optimiseFinalMesh(), and cartesianMeshGenerator::optimiseFinalMesh().

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untangleBoundaryLayer()

void untangleBoundaryLayer

(

)

performs untangling of boundary layer cells if the user requests for it

Definition at line 405 of file optimizeMeshFV.C.

References polyMeshGenCells::addCellSubset(), polyMeshGenCells::addCellToSubset(), Foam::polyMeshGenChecks::checkFacePyramids(), forAllConstIter(), dictionary::found(), objectRegistry::foundObject(), dictionary::lookup(), objectRegistry::lookupObject(), meshOptimizer::mesh_, polyMeshGenFaces::neighbour(), meshOptimizer::optimizeLowQualityFaces(), polyMeshGenFaces::owner(), Foam::readBool(), meshOptimizer::removeUserConstraints(), Foam::returnReduce(), polyMeshGenPoints::returnTime(), HashTable::size(), dictionary::subDict(), and meshOptimizer::untangleMeshFV().

Referenced by layerRefinement(), cartesianMeshGenerator::refBoundaryLayers(), tetMeshGenerator::refBoundaryLayers(), and voronoiMeshGenerator::refBoundaryLayers().

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optimizeLowQualityFaces()

void optimizeLowQualityFaces

(

const label

maxNumIterations = 10

)

performs mesh optimisation for faces with high non-orthogonality and skewness

check if any points in the tet mesh shall not move

perform optimisation

construct tetMeshOptimisation and improve positions of points in the tet mesh

update points in the mesh from the new coordinates in the tet mesh

Definition at line 469 of file optimizeMeshFV.C.

References LongList< T, Offset >::append(), Foam::endl(), polyMeshGenFaces::faces(), Foam::polyMeshGenChecks::findLowQualityFaces(), forAll, forAllConstIter(), Foam::Info, meshOptimizer::LOCKED, meshOptimizer::mesh_, tetMeshOptimisation::optimiseUsingVolumeOptimizer(), faceListPMG::size(), partTetMesh::updateOrigMesh(), and meshOptimizer::vertexLocation_.

Referenced by meshOptimisation(), tetMeshGenerator::optimiseFinalMesh(), voronoiMeshGenerator::optimiseFinalMesh(), cartesianMeshGenerator::optimiseFinalMesh(), and meshOptimizer::untangleBoundaryLayer().

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optimizeMeshNearBoundaries()

void optimizeMeshNearBoundaries	(	const label	maxNumIterations = 10,
		const label	numLayersOfCells = 2
	)

perform optimization of cells near the boundary the use shall specify the number of iterations and the number of cell layers which shall be taken into account

check if any points in the tet mesh shall not move

Definition at line 522 of file optimizeMeshFV.C.

References LongList< T, Offset >::append(), Foam::endl(), Foam::flush(), forAll, Foam::Info, tetMeshOptimisation::optimiseUsingVolumeOptimizer(), faceListPMG::size(), and partTetMesh::updateOrigMesh().

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optimizeMeshFV()

void optimizeMeshFV	(	const label	numLaplaceIterations = 5,
		const label	maxNumGlobalIterations = 10,
		const label	maxNumIterations = 50,
		const label	maxNumSurfaceIterations = 2
	)

final optimisation

Definition at line 557 of file optimizeMeshFV.C.

References Foam::endl(), Foam::Info, and meshOptimizer::laplaceSmoother::optimizeLaplacianPC().

Referenced by main(), meshOptimisation(), tetMeshGenerator::optimiseFinalMesh(), voronoiMeshGenerator::optimiseFinalMesh(), cartesianMeshGenerator::optimiseFinalMesh(), and meshOptimizer::optimizeBoundaryLayer().

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optimizeMeshFVBestQuality()

void optimizeMeshFVBestQuality	(	const label	maxNumIterations = 50,
		const scalar	threshold = 0.1
	)

greedy optimisation until the mesh can be improved

check if any points in the tet mesh shall not move

perform optimisation

update the iteration number when the minimum is achieved

construct tetMeshOptimisation and improve positions of points in the tet mesh

update points in the mesh from the new coordinates in the tet mesh

Definition at line 580 of file optimizeMeshFV.C.

References LongList< T, Offset >::append(), Foam::endl(), Foam::polyMeshGenChecks::findWorstQualityFaces(), forAll, forAllConstIter(), Foam::Info, tetMeshOptimisation::optimiseUsingVolumeOptimizer(), faceListPMG::size(), and partTetMesh::updateOrigMesh().

Referenced by main().

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Field Documentation

mesh_

polyMeshGen& mesh_

private

reference to the mesh

Definition at line 64 of file meshOptimizer.H.

Referenced by meshOptimizer::calculatePointLocations(), meshOptimizer::lockCells(), meshOptimizer::lockCellsInSubset(), meshOptimizer::lockFaces(), meshOptimizer::lockFacesInSubset(), meshOptimizer::lockPoints(), meshOptimizer::lockPointsInSubset(), meshOptimizer::meshSurface(), meshOptimizer::optimizeBoundaryLayer(), meshOptimizer::optimizeLowQualityFaces(), and meshOptimizer::untangleBoundaryLayer().

vertexLocation_

List<direction> vertexLocation_

private

location of vertex (internal, boundary, edge, corner)

Definition at line 67 of file meshOptimizer.H.

Referenced by meshOptimizer::calculatePointLocations(), meshOptimizer::lockCells(), meshOptimizer::lockFaces(), meshOptimizer::lockPoints(), meshOptimizer::optimizeBoundaryLayer(), meshOptimizer::laplaceSmoother::optimizeLaplacian(), meshOptimizer::laplaceSmoother::optimizeLaplacianPC(), meshOptimizer::laplaceSmoother::optimizeLaplacianWPC(), meshOptimizer::optimizeLowQualityFaces(), and meshOptimizer::removeUserConstraints().

lockedFaces_

labelLongList lockedFaces_

private

locked faces which shall not be changed

Definition at line 70 of file meshOptimizer.H.

Referenced by meshOptimizer::lockCells(), meshOptimizer::lockFaces(), and meshOptimizer::removeUserConstraints().

msePtr_

meshSurfaceEngine* msePtr_

mutableprivate

mesh surface

Definition at line 73 of file meshOptimizer.H.

Referenced by meshOptimizer::clearSurface(), and meshOptimizer::meshSurface().

enforceConstraints_

bool enforceConstraints_

private

enforce constraints

Definition at line 76 of file meshOptimizer.H.

Referenced by meshOptimizer::enforceConstraints(), and meshOptimizer::optimizeSurface().

badPointsSubsetName_

word badPointsSubsetName_

private

name of the subset contaning tangled points

Definition at line 79 of file meshOptimizer.H.

Referenced by meshOptimizer::enforceConstraints(), and meshOptimizer::optimizeSurface().

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The documentation for this class was generated from the following files:

• applications/extra/cfMesh-v1.1.2/meshLibrary/utilities/smoothers/geometry/meshOptimizer/meshOptimizer.H
• applications/extra/cfMesh-v1.1.2/meshLibrary/utilities/smoothers/geometry/meshOptimizer/meshOptimizer.C
• applications/extra/cfMesh-v1.1.2/meshLibrary/utilities/smoothers/geometry/meshOptimizer/meshOptimizerI.H
• applications/extra/cfMesh-v1.1.2/meshLibrary/utilities/smoothers/geometry/meshOptimizer/meshOptimizerOptimizeSurface.C
• applications/extra/cfMesh-v1.1.2/meshLibrary/utilities/smoothers/geometry/meshOptimizer/optimizeMeshFV.C