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Added densityWeightedStochastic initial points method which places random points

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with a density corresponding to that of the desired mesh.  Added and
restructured queries to make this possible.

Also, for all initialPointsMethods, made the minimumSurfaceDistance into
minimumSurfaceDistanceCoeff so that the guard distance for the surface is a
function of the local cell size.
This commit is contained in:
graham
2009-07-29 14:05:57 +01:00
parent 2d2c8cf8bc
commit 29ec60b51d
12 changed files with 372 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/conformalVoronoiMesh/Make/files
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@ -20,6 +20,7 @@ $(cellSiseFunctions)/linearSpatial/linearSpatial.C
initialPointsMethod/initialPointsMethod/initialPointsMethod.C
initialPointsMethod/uniformGrid/uniformGrid.C
initialPointsMethod/pointFile/pointFile.C
initialPointsMethod/densityWeightedStochastic/densityWeightedStochastic.C
relaxationModel/relaxationModel/relaxationModel.C
relaxationModel/adaptiveLinear/adaptiveLinear.C

34
src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeControlSurfaces.C
View File

@ -213,6 +213,40 @@ Foam::scalar Foam::cellSizeControlSurfaces::cellSize
}
Foam::scalarField Foam::cellSizeControlSurfaces::cellSize
(
const pointField& pts,
const List<bool>& isSurfacePoint
) const
{
if (pts.size() != isSurfacePoint.size())
{
FatalErrorIn
(
"Foam::cellSizeControlSurfaces::cellSizeControlSurfaces \
( \
const pointField& pts, \
const List<bool>& isSurfacePoint \
) \
const"
) << "Size of pointField (" << pts.size()
<< ") and List<bool> (" << isSurfacePoint.size()
<< ") do not match." << nl
<< exit(FatalError);
}
scalarField cellSizes(pts.size());
forAll(pts, i)
{
cellSizes[i] = cellSize(pts[i], isSurfacePoint[i]);
}
return cellSizes;
}
// ************************************************************************* //

7
src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeControlSurfaces.H
View File

@ -131,6 +131,13 @@ public:
const point& pt,
bool isSurfacePoint = false
) const;
//- Return the cell size at the given locations
scalarField cellSize
(
const pointField& pts,
const List<bool>& isSurfacePoint
) const;
};

2
src/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMesh.C
View File

@ -2135,6 +2135,8 @@ void Foam::conformalVoronoiMesh::move()
}
}
timeCheck();
Info<< nl << " Looping over all dual faces" << endl;
vectorField cartesianDirections(3);

111
src/conformalVoronoiMesh/conformationSurfaces/conformationSurfaces.C
View File

@ -45,7 +45,8 @@ Foam::conformationSurfaces::conformationSurfaces
baffleSurfaces_(),
patchNames_(0),
patchOffsets_(),
bounds_()
bounds_(),
referenceVolumeTypes_(0)
{
const dictionary& surfacesDict
(
@ -166,50 +167,11 @@ Foam::conformationSurfaces::conformationSurfaces
bounds_ = searchableSurfacesQueries::bounds(allGeometry_, surfaces_);
if(cvMesh_.cvMeshControls().objOutput())
{
writeFeatureObj("cvMesh");
}
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::conformationSurfaces::~conformationSurfaces()
{}
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
Foam::Field<bool> Foam::conformationSurfaces::inside
(
const pointField& samplePts
) const
{
return wellInside(samplePts, 0.0);
}
Foam::Field<bool> Foam::conformationSurfaces::outside
(
const pointField& samplePts
) const
{
return wellOutside(samplePts, 0.0);
}
Foam::Field<bool> Foam::conformationSurfaces::wellInside
(
const pointField& samplePts,
const scalar dist2
) const
{
// Look at all surfaces at determine whether the locationInMesh point is
// inside or outside each, to establish a signature for the domain to be
// meshed.
List<searchableSurface::volumeType> referenceVolumeTypes
referenceVolumeTypes_.setSize
(
surfaces_.size(),
searchableSurface::UNKNOWN
@ -231,10 +193,49 @@ Foam::Field<bool> Foam::conformationSurfaces::wellInside
surface.getVolumeType(pts, vTypes);
referenceVolumeTypes[s] = vTypes[0];
referenceVolumeTypes_[s] = vTypes[0];
}
}
if(cvMesh_.cvMeshControls().objOutput())
{
writeFeatureObj("cvMesh");
}
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::conformationSurfaces::~conformationSurfaces()
{}
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
Foam::Field<bool> Foam::conformationSurfaces::inside
(
const pointField& samplePts
) const
{
return wellInside(samplePts, scalarField(samplePts.size(), 0.0));
}
Foam::Field<bool> Foam::conformationSurfaces::outside
(
const pointField& samplePts
) const
{
return wellOutside(samplePts, scalarField(samplePts.size(), 0.0));
}
Foam::Field<bool> Foam::conformationSurfaces::wellInside
(
const pointField& samplePts,
const scalarField& testDistSqr
) const
{
List<List<searchableSurface::volumeType> > surfaceVolumeTests
(
surfaces_.size(),
@ -264,8 +265,6 @@ Foam::Field<bool> Foam::conformationSurfaces::wellInside
//Check if the points are inside the surface by the given distance squared
scalarField testDistSqr(insidePoints.size(), dist2);
labelList hitSurfaces;
List<pointIndexHit> hitInfo;
@ -293,7 +292,7 @@ Foam::Field<bool> Foam::conformationSurfaces::wellInside
forAll(surfaces_, s)
{
if (surfaceVolumeTests[s][i] != referenceVolumeTypes[s])
if (surfaceVolumeTests[s][i] != referenceVolumeTypes_[s])
{
insidePoints[i] = false;
@ -306,10 +305,20 @@ Foam::Field<bool> Foam::conformationSurfaces::wellInside
}
bool Foam::conformationSurfaces::wellInside
(
const point& samplePt,
scalar testDistSqr
) const
{
return wellInside(pointField(1, samplePt), scalarField(1, testDistSqr))[0];
}
Foam::Field<bool> Foam::conformationSurfaces::wellOutside
(
const pointField& samplePts,
const scalar dist2
const scalarField& testDistSqr
) const
{
notImplemented("Field<bool> Foam::conformationSurfaces::wellOutside");
@ -318,6 +327,16 @@ Foam::Field<bool> Foam::conformationSurfaces::wellOutside
}
bool Foam::conformationSurfaces::wellOutside
(
const point& samplePt,
scalar testDistSqr
) const
{
return wellOutside(pointField(1, samplePt), scalarField(1, testDistSqr))[0];
}
bool Foam::conformationSurfaces::findSurfaceAnyIntersection
(
const point& start,

24
src/conformalVoronoiMesh/conformationSurfaces/conformationSurfaces.H
View File

@ -94,6 +94,10 @@ class conformationSurfaces
//- The overall boundBox of all of the surfaces to be conformed to
boundBox bounds_;
//- The pattern/signature of volumeTypes representing a point in the
// domain to be meshed
List<searchableSurface::volumeType> referenceVolumeTypes_;
// Private Member Functions
@ -151,19 +155,31 @@ public:
Field<bool> outside(const pointField& samplePts) const;
//- Check if point is inside surfaces to conform to by at least
// dist2
// testDistSqr
Field<bool> wellInside
(
const pointField& samplePts,
const scalar dist2
const scalarField& testDistSqr
) const;
bool wellInside
(
const point& samplePt,
scalar testDistSqr
) const;
//- Check if point is outside surfaces to conform to by at least
// dist2
// testDistSqr
Field<bool> wellOutside
(
const pointField& samplePts,
const scalar dist2
const scalarField& testDistSqr
) const;
bool wellOutside
(
const point& samplePt,
scalar testDistSqr
) const;
// Finding if the line joining start and end intersects the surface

121
src/conformalVoronoiMesh/initialPointsMethod/densityWeightedStochastic/densityWeightedStochastic.C Normal file
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@ -0,0 +1,121 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2009-2009 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM; if not, write to the Free Software Foundation,
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
\*---------------------------------------------------------------------------*/
#include "densityWeightedStochastic.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
defineTypeNameAndDebug(densityWeightedStochastic, 0);
addToRunTimeSelectionTable
(
initialPointsMethod,
densityWeightedStochastic,
dictionary
);
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
densityWeightedStochastic::densityWeightedStochastic
(
const dictionary& initialPointsDict,
const conformalVoronoiMesh& cvMesh
)
:
initialPointsMethod(typeName, initialPointsDict, cvMesh),
totalVolume_(readScalar(detailsDict().lookup("totalVolume"))),
maxDensity_
(
1.0/pow3(readScalar(detailsDict().lookup("minCellSize")))
)
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
std::vector<Vb::Point> densityWeightedStochastic::initialPoints() const
{
const boundBox& bb = cvMesh_.geometryToConformTo().bounds();
Random rndGen(5234986);
std::vector<Vb::Point> initialPoints;
scalar volumeAdded = 0.0;
const point& min = bb.min();
vector span = bb.span();
while (volumeAdded < totalVolume_)
{
point p =
min
+ vector
(
span.x()*rndGen.scalar01(),
span.y()*rndGen.scalar01(),
span.z()*rndGen.scalar01()
);
scalar localSize = cvMesh_.cellSizeControl().cellSize(p);
scalar localDensity = 1/pow3(max(localSize, VSMALL));
// Accept possible placements proportional to the relative local density
if (localDensity/maxDensity_ > rndGen.scalar01())
{
// Determine if the point is "wellInside" the domain
if
(
cvMesh_.geometryToConformTo().wellInside
(
p,
minimumSurfaceDistanceCoeffSqr_*sqr(localSize)
)
)
{
initialPoints.push_back(Vb::Point(p.x(), p.y(), p.z()));
volumeAdded += 1/localDensity;
}
}
}
return initialPoints;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// ************************************************************************* //

103
src/conformalVoronoiMesh/initialPointsMethod/densityWeightedStochastic/densityWeightedStochastic.H Normal file
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@ -0,0 +1,103 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2009-2009 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM; if not, write to the Free Software Foundation,
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Class
Foam::densityWeightedStochastic
Description
SourceFiles
densityWeightedStochastic.C
\*---------------------------------------------------------------------------*/
#ifndef densityWeightedStochastic_H
#define densityWeightedStochastic_H
#include "Switch.H"
#include "Random.H"
#include "initialPointsMethod.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class densityWeightedStochastic Declaration
\*---------------------------------------------------------------------------*/
class densityWeightedStochastic
:
public initialPointsMethod
{
private:
// Private data
//- The total volume to be filled
scalar totalVolume_;
//- 1/(minimum cell size)^3, gives the maximum permissible point
// density
scalar maxDensity_;
public:
//- Runtime type information
TypeName("densityWeightedStochastic");
// Constructors
//- Construct from components
densityWeightedStochastic
(
const dictionary& initialPointsDict,
const conformalVoronoiMesh& cvMesh
);
//- Destructor
virtual ~densityWeightedStochastic()
{}
// Member Functions
//- Return the initial points for the conformalVoronoiMesh
virtual std::vector<Vb::Point> initialPoints() const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

7
src/conformalVoronoiMesh/initialPointsMethod/initialPointsMethod/initialPointsMethod.C
View File

@ -50,11 +50,14 @@ initialPointsMethod::initialPointsMethod
dictionary(initialPointsDict),
cvMesh_(cvMesh),
detailsDict_(subDict(type + "Details")),
minimumSurfaceDistance_
minimumSurfaceDistanceCoeffSqr_
(
sqr
(
readScalar
(
initialPointsDict.lookup("minimumSurfaceDistance")
initialPointsDict.lookup("minimumSurfaceDistanceCoeff")
)
)
)
{}

5
src/conformalVoronoiMesh/initialPointsMethod/initialPointsMethod/initialPointsMethod.H
View File

@ -67,8 +67,9 @@ protected:
dictionary detailsDict_;
//- Only allow the placement of initial points that are within the
// surfaces to be meshed by minimumSurfaceDistance
scalar minimumSurfaceDistance_;
// surfaces to be meshed by minimumSurfaceDistanceCoeff multiplied by
// the local target cell size. Store square of value.
scalar minimumSurfaceDistanceCoeffSqr_;
private:

7
src/conformalVoronoiMesh/initialPointsMethod/pointFile/pointFile.C
View File

@ -73,7 +73,12 @@ std::vector<Vb::Point> pointFile::initialPoints() const
Field<bool> insidePoints = cvMesh_.geometryToConformTo().wellInside
(
points,
sqr(minimumSurfaceDistance_)
minimumSurfaceDistanceCoeffSqr_
*cvMesh_.cellSizeControl().cellSize
(
points,
List<bool>(points.size(), false)
)
);
forAll(insidePoints, i)

5
src/conformalVoronoiMesh/initialPointsMethod/uniformGrid/uniformGrid.C
View File

@ -82,6 +82,8 @@ std::vector<Vb::Point> uniformGrid::initialPoints() const
std::vector<Vb::Point> initialPoints;
List<bool> isSurfacePoint(nk, false);
for (int i = 0; i < ni; i++)
{
for (int j = 0; j < nj; j++)
@ -116,7 +118,8 @@ std::vector<Vb::Point> uniformGrid::initialPoints() const
Field<bool> insidePoints = cvMesh_.geometryToConformTo().wellInside
(
points,
sqr(minimumSurfaceDistance_)
minimumSurfaceDistanceCoeffSqr_
*cvMesh_.cellSizeControl().cellSize(points, isSurfacePoint)
);
forAll(insidePoints, i)