CFCFaceToCellStencil.C

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    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2021 OpenCFD Ltd.
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    This file is part of OpenFOAM.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "CFCFaceToCellStencil.H"
#include "syncTools.H"
#include "emptyPolyPatch.H"
#include "dummyTransform.H"
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
void Foam::CFCFaceToCellStencil::calcFaceBoundaryData
(
    labelListList& neiGlobal
) const
{
    const polyBoundaryMesh& patches = mesh().boundaryMesh();
    const label nBnd = mesh().nBoundaryFaces();
    const labelList& own = mesh().faceOwner();
 
    neiGlobal.setSize(nBnd);
 
    forAll(patches, patchi)
    {
        const polyPatch& pp = patches[patchi];
        label facei = pp.start();
 
        if (pp.coupled())
        {
            // For coupled faces get the faces of the cell on the other side
            forAll(pp, i)
            {
                const labelList& cFaces = mesh().cells()[own[facei]];
 
                labelList& globFaces = neiGlobal[facei-mesh().nInternalFaces()];
                globFaces.setSize(cFaces.size()-1);
                label globI = 0;
 
                forAll(cFaces, j)
                {
                    if (cFaces[j] != facei)
                    {
                        globFaces[globI++] = globalNumbering().toGlobal
                        (
                            cFaces[j]
                        );
                    }
                }
                facei++;
            }
        }
        else if (isA<emptyPolyPatch>(pp))
        {}
        else
        {
            // Do nothing since face itself already in stencil
        }
    }
 
    syncTools::syncBoundaryFaceList
    (
        mesh(),
        neiGlobal,
        eqOp<labelList>(),
        dummyTransform()
    );
}
 
 
void Foam::CFCFaceToCellStencil::calcCellStencil
(
    labelListList& globalCellFaces
) const
{
    const label nBnd = mesh().nBoundaryFaces();
    const labelList& own = mesh().faceOwner();
    const labelList& nei = mesh().faceNeighbour();
 
 
    // Calculate faces of coupled neighbour (in global numbering)
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
    labelListList neiGlobal(nBnd);
    calcFaceBoundaryData(neiGlobal);
 
 
 
    // Non-empty boundary faces
    boolList validBFace(mesh().nBoundaryFaces(), true);
 
    const polyBoundaryMesh& patches = mesh().boundaryMesh();
    forAll(patches, patchi)
    {
        const polyPatch& pp = patches[patchi];
 
        if (isA<emptyPolyPatch>(pp))
        {
            label bFacei = pp.start()-mesh().nInternalFaces();
            forAll(pp, i)
            {
                validBFace[bFacei++] = false;
            }
        }
    }
 
 
    // Determine faces of cellCells in global numbering
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
    DynamicList<label> allGlobalFaces(100);
 
    globalCellFaces.setSize(mesh().nCells());
    forAll(globalCellFaces, celli)
    {
        const cell& cFaces = mesh().cells()[celli];
 
        allGlobalFaces.clear();
 
        // My faces first
        for (const label facei : cFaces)
        {
            if
            (
                mesh().isInternalFace(facei)
             || validBFace[facei-mesh().nInternalFaces()]
            )
            {
                allGlobalFaces.append(globalNumbering().toGlobal(facei));
            }
        }
 
        // faces of neighbouring cells second
        for (const label facei : cFaces)
        {
            if (mesh().isInternalFace(facei))
            {
                label nbrCelli = own[facei];
                if (nbrCelli == celli)
                {
                    nbrCelli = nei[facei];
                }
                const cell& nbrFaces = mesh().cells()[nbrCelli];
 
                for (const label nbrFacei : nbrFaces)
                {
                    if
                    (
                        mesh().isInternalFace(nbrFacei)
                     || validBFace[nbrFacei-mesh().nInternalFaces()]
                    )
                    {
                        label nbrGlobali = globalNumbering().toGlobal(nbrFacei);
 
                        // Note:should use hashset?
                        allGlobalFaces.appendUniq(nbrGlobali);
                    }
                }
            }
            else
            {
                const labelList& nbrGlobalFaces =
                    neiGlobal[facei-mesh().nInternalFaces()];
 
                for (const label nbrGlobali : nbrGlobalFaces)
                {
                    // Note:should use hashset?
                    allGlobalFaces.appendUniq(nbrGlobali);
                }
            }
        }
 
        globalCellFaces[celli] = allGlobalFaces;
        //Pout<< "** cell:" << celli
        //    << " at:" << mesh().cellCentres()[celli]
        //    << endl;
        //const labelList& globalFaces = globalCellFaces[celli];
        //forAll(globalFaces, i)
        //{
        //    label facei = globalNumbering().toLocal(globalFaces[i]);
        //    Pout<< "    face:" << facei
        //        << " at:" << mesh().faceCentres()[facei]
        //        << endl;
        //}
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::CFCFaceToCellStencil::CFCFaceToCellStencil(const polyMesh& mesh)
:
    faceToCellStencil(mesh)
{
    // Calculate per cell the (face) connected cells (in global numbering)
    calcCellStencil(*this);
}
 
 
// ************************************************************************* //