patchDataWave.C

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#include "patchDataWave.H"

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

template<class TransferType, class TrackingData>
int Foam::patchDataWave<TransferType, TrackingData>::dummyTrackData_ = 12345;


// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //

// Set initial set of changed faces (= all wall faces)
template<class TransferType, class TrackingData>
void Foam::patchDataWave<TransferType, TrackingData>::setChangedFaces
(
    const labelHashSet& patchIDs,
    DynamicList<label>& changedFaces,
    DynamicList<TransferType>& faceDist
) const
{
    const polyMesh& mesh = cellDistFuncs::mesh();

    forAll(mesh.boundaryMesh(), patchi)
    {
        if (patchIDs.found(patchi))
        {
            const polyPatch& patch = mesh.boundaryMesh()[patchi];

            const auto areaFraction(patch.areaFraction());

            const auto faceCentres(patch.faceCentres());

            const Field<Type>& patchField = initialPatchValuePtrs_[patchi];

            forAll(faceCentres, patchFacei)
            {
                if
                (
                    !areaFraction
                 || (areaFraction()[patchFacei] > 0.5)    // mostly wall
                )
                {
                    label meshFacei = patch.start() + patchFacei;
                    changedFaces.append(meshFacei);

                    faceDist.append
                    (
                        TransferType
                        (
                            faceCentres[patchFacei],
                            patchField[patchFacei],
                            0.0
                        )
                    );
                }
            }
        }
    }
}


// Copy from MeshWave data into *this (distance) and field_ (transported data)
template<class TransferType, class TrackingData>
Foam::label Foam::patchDataWave<TransferType, TrackingData>::getValues
(
    const MeshWave<TransferType, TrackingData>& waveInfo
)
{
    const polyMesh& mesh = cellDistFuncs::mesh();

    const List<TransferType>& cellInfo = waveInfo.allCellInfo();
    const List<TransferType>& faceInfo = waveInfo.allFaceInfo();

    label nIllegal = 0;

    // Copy cell values
    distance_.setSize(cellInfo.size());

    forAll(cellInfo, celli)
    {
        const TransferType & wpn = cellInfo[celli];

        scalar dist = wpn.distSqr();

        if (cellInfo[celli].valid(waveInfo.data()))
        {
            distance_[celli] = Foam::sqrt(dist);

            cellData_[celli] = cellInfo[celli].data();
        }
        else
        {
            // Illegal/unset value. What to do with data?
            // Note: mag for now. Should maybe be member of TransferType?

            distance_[celli] = mag(dist);

            //cellData_[celli] = point::max;
            cellData_[celli] = cellInfo[celli].data();

            nIllegal++;
        }
    }

    // Copy boundary values
    forAll(patchDistance_, patchi)
    {
        const polyPatch& patch = mesh.boundaryMesh()[patchi];

        // Allocate storage for patchDistance
        scalarField* patchFieldPtr = new scalarField(patch.size());

        patchDistance_.set(patchi, patchFieldPtr);

        scalarField& patchField = *patchFieldPtr;

        // Allocate storage for patchData
        Field<Type>* patchDataFieldPtr = new Field<Type>(patch.size());

        patchData_.set(patchi, patchDataFieldPtr);

        Field<Type>& patchDataField = *patchDataFieldPtr;

        // Copy distance and data
        forAll(patchField, patchFacei)
        {
            label meshFacei = patch.start() + patchFacei;

            scalar dist = faceInfo[meshFacei].distSqr();

            if (faceInfo[meshFacei].valid(waveInfo.data()))
            {
                // Adding SMALL to avoid problems with /0 in the turbulence
                // models
                patchField[patchFacei] = Foam::sqrt(dist) + SMALL;

                patchDataField[patchFacei] = faceInfo[meshFacei].data();
            }
            else
            {
                // Illegal/unset value. What to do with data?

                patchField[patchFacei] = mag(dist);

                //patchDataField[patchFacei] = point::max;
                patchDataField[patchFacei] = faceInfo[meshFacei].data();

                nIllegal++;
            }
        }
    }

    return nIllegal;
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

// Construct from components
template<class TransferType, class TrackingData>
Foam::patchDataWave<TransferType, TrackingData>::patchDataWave
(
    const polyMesh& mesh,
    const labelHashSet& patchIDs,
    const UPtrList<Field<Type>>& initialPatchValuePtrs,
    const bool correctWalls,
    TrackingData& td
)
:
    cellDistFuncs(mesh),
    patchIDs_(patchIDs),
    initialPatchValuePtrs_(initialPatchValuePtrs),
    correctWalls_(correctWalls),
    td_(td),
    nUnset_(0),
    distance_(mesh.nCells()),
    patchDistance_(mesh.boundaryMesh().size()),
    cellData_(mesh.nCells()),
    patchData_(mesh.boundaryMesh().size())
{
    patchDataWave<TransferType, TrackingData>::correct();
}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

template<class TransferType, class TrackingData>
Foam::patchDataWave<TransferType, TrackingData>::~patchDataWave()
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

// Correct for mesh geom/topo changes
template<class TransferType, class TrackingData>
void Foam::patchDataWave<TransferType, TrackingData>::correct()
{
    //
    // Set initial changed faces: set TransferType for wall faces
    // to wall centre.
    //

    // Count walls
    label nWalls = sumPatchSize(patchIDs_);

    DynamicList<TransferType> faceDist(nWalls);
    DynamicList<label> changedFaces(nWalls);

    setChangedFaces(patchIDs_, changedFaces, faceDist);

    //
    // Do calculate wall distance by 'growing' from faces.
    //

    MeshWave<TransferType, TrackingData> waveInfo
    (
        mesh(),
        changedFaces,
        faceDist,
        mesh().globalData().nTotalCells()+1,    // max iterations
        td_
    );


    //
    // Copy distance into return field
    //

    nUnset_ = getValues(waveInfo);

    //
    // Correct wall cells for true distance
    //

    if (correctWalls_)
    {
        Map<label> nearestFace(2 * nWalls);

        // Get distance and indices of nearest face
        correctBoundaryFaceCells
        (
            patchIDs_,
            distance_,
            nearestFace
        );

        correctBoundaryPointCells
        (
            patchIDs_,
            distance_,
            nearestFace
        );

        // Transfer data from nearest face to cell
        const List<TransferType>& faceInfo = waveInfo.allFaceInfo();

        const labelList wallCells(nearestFace.toc());

        forAll(wallCells, wallCelli)
        {
            label celli = wallCells[wallCelli];

            label facei = nearestFace[celli];

            cellData_[celli] = faceInfo[facei].data();
        }
    }
}


// ************************************************************************* //