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foam-extend4.1-coherent-io/applications/solvers/coupled/MRFPorousFoam/addImplicitMRFPorous.H

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if (addMRF || addPorosity)
{
// Manually over-ride the 3x3 block to handle the off-diagonal
// part of the Ap coefficient
const tensorField& TUIn = tTU().internalField();
CoeffField<vector4>::squareTypeField& DD = UpEqn.diag().asSquare();
const scalarField& V = mesh.V().field();
// Note: insertion should only happen in MRF and porous cell zones
// HJ, 14/Mar/2016
// Warning. Possible problem with a zone which is both MRF and porous
// The solution is to do the loop below everywhere
// Currently only inserting zones for efficiency. HJ, 18/Nov/2017
register label cellI;
forAll (mrfZones, mrfZoneI)
{
const labelList& curZoneCells = mrfZones[mrfZoneI].zone();
// Loop over all cells in the zone
forAll (curZoneCells, zcI)
{
cellI = curZoneCells[zcI];
const scalar& cellV = V[cellI];
const tensor& cellTU = TUIn[cellI];
CoeffField<vector4>::squareType& cellDD = DD[cellI];
cellDD(0, 0) += cellV*cellTU.xx();
cellDD(0, 1) += cellV*cellTU.xy();
cellDD(0, 2) += cellV*cellTU.xz();
cellDD(1, 0) += cellV*cellTU.yx();
cellDD(1, 1) += cellV*cellTU.yy();
cellDD(2, 2) += cellV*cellTU.yz();
cellDD(2, 0) += cellV*cellTU.zx();
cellDD(2, 1) += cellV*cellTU.zy();
cellDD(2, 2) += cellV*cellTU.zz();
}
}
forAll (pZones, pZoneI)
{
const labelList& curZoneCells = pZones[pZoneI].zone();
// Loop over all cells in the zone
forAll (curZoneCells, zcI)
{
cellI = curZoneCells[zcI];
const scalar& cellV = V[cellI];
const tensor& cellTU = TUIn[cellI];
CoeffField<vector4>::squareType& cellDD = DD[cellI];
cellDD(0, 0) += cellV*cellTU.xx();
cellDD(0, 1) += cellV*cellTU.xy();
cellDD(0, 2) += cellV*cellTU.xz();
cellDD(1, 0) += cellV*cellTU.yx();
cellDD(1, 1) += cellV*cellTU.yy();
cellDD(2, 2) += cellV*cellTU.yz();
cellDD(2, 0) += cellV*cellTU.zx();
cellDD(2, 1) += cellV*cellTU.zy();
cellDD(2, 2) += cellV*cellTU.zz();
}
}
}