conformalVoronoiMeshTemplates.C

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
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    Copyright (C) 2011-2016 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
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    under the terms of the GNU General Public License as published by
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    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
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#include "conformalVoronoiMesh.H"
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class Triangulation>
bool Foam::conformalVoronoiMesh::distributeBackground(const Triangulation& mesh)
{
    if (!Pstream::parRun())
    {
        return false;
    }
 
    Info<< nl << "Redistributing points" << endl;
 
    timeCheck("Before distribute");
 
    label iteration = 0;
 
    scalar previousLoadUnbalance = 0;
 
    while (true)
    {
        scalar maxLoadUnbalance = mesh.calculateLoadUnbalance();
 
        if
        (
            maxLoadUnbalance <= foamyHexMeshControls().maxLoadUnbalance()
         || maxLoadUnbalance <= previousLoadUnbalance
        )
        {
            // If this is the first iteration, return false, if it was a
            // subsequent one, return true;
            return iteration != 0;
        }
 
        previousLoadUnbalance = maxLoadUnbalance;
 
        Info<< "    Total number of vertices before redistribution "
            << returnReduce(label(mesh.number_of_vertices()), sumOp<label>())
            << endl;
 
        const fvMesh& bMesh = decomposition_().mesh();
 
        volScalarField cellWeights
        (
            IOobject
            (
                "cellWeights",
                bMesh.time().timeName(),
                bMesh,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            bMesh,
            dimensionedScalar(word::null, dimless, 1e-2),
            fvPatchFieldBase::zeroGradientType()
        );
 
        meshSearch cellSearch(bMesh, polyMesh::FACE_PLANES);
 
        labelList cellVertices(bMesh.nCells(), Zero);
 
        for
        (
            typename Triangulation::Finite_vertices_iterator vit
                = mesh.finite_vertices_begin();
            vit != mesh.finite_vertices_end();
            ++vit
        )
        {
            // Only store real vertices that are not feature vertices
            if (vit->real() && !vit->featurePoint())
            {
                pointFromPoint v = topoint(vit->point());
 
                label celli = cellSearch.findCell(v);
 
                if (celli == -1)
                {
//                     Pout<< "findCell conformalVoronoiMesh::distribute "
//                         << "findCell "
//                         << vit->type() << " "
//                         << vit->index() << " "
//                         << v << " "
//                         << celli
//                         << " find nearest celli ";
 
                    celli = cellSearch.findNearestCell(v);
                }
 
                cellVertices[celli]++;
            }
        }
 
        scalarField& cwi = cellWeights.primitiveFieldRef();
 
        forAll(cellVertices, cI)
        {
            // Give a small but finite weight for empty cells.  Some
            // decomposition methods have difficulty with integer overflows in
            // the sum of the normalised weight field.
            cwi[cI] = max(cellVertices[cI], 1e-2);
        }
 
        autoPtr<mapDistributePolyMesh> mapDist = decomposition_().distribute
        (
            cellWeights
        );
 
        cellShapeControl_.shapeControlMesh().distribute(decomposition_());
 
        distribute();
 
        timeCheck("After distribute");
 
        iteration++;
    }
 
    return true;
}
 
 
// ************************************************************************* //