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318 lines
8.8 KiB
C
318 lines
8.8 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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\*---------------------------------------------------------------------------*/
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#include "cellQuality.H"
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#include "unitConversion.H"
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::cellQuality::cellQuality(const polyMesh& mesh)
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:
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mesh_(mesh)
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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Foam::tmp<Foam::scalarField> Foam::cellQuality::nonOrthogonality() const
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{
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tmp<scalarField> tresult
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(
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new scalarField
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(
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mesh_.nCells(), 0.0
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)
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);
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scalarField& result = tresult();
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scalarField sumArea(mesh_.nCells(), 0.0);
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const vectorField& centres = mesh_.cellCentres();
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const vectorField& areas = mesh_.faceAreas();
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const labelList& own = mesh_.faceOwner();
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const labelList& nei = mesh_.faceNeighbour();
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forAll (nei, faceI)
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{
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vector d = centres[nei[faceI]] - centres[own[faceI]];
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vector s = areas[faceI];
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scalar magS = mag(s);
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scalar cosDDotS =
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radToDeg(Foam::acos(min(1.0, (d & s)/(mag(d)*magS + VSMALL))));
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result[own[faceI]] = max(cosDDotS, result[own[faceI]]);
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result[nei[faceI]] = max(cosDDotS, result[nei[faceI]]);
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}
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forAll (mesh_.boundaryMesh(), patchI)
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{
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const unallocLabelList& faceCells =
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mesh_.boundaryMesh()[patchI].faceCells();
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const vectorField::subField faceCentres =
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mesh_.boundaryMesh()[patchI].faceCentres();
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const vectorField::subField faceAreas =
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mesh_.boundaryMesh()[patchI].faceAreas();
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forAll(faceCentres, faceI)
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{
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vector d = faceCentres[faceI] - centres[faceCells[faceI]];
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vector s = faceAreas[faceI];
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scalar magS = mag(s);
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scalar cosDDotS =
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radToDeg(Foam::acos(min(1.0, (d & s)/(mag(d)*magS + VSMALL))));
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result[faceCells[faceI]] = max(cosDDotS, result[faceCells[faceI]]);
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}
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}
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return tresult;
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}
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Foam::tmp<Foam::scalarField> Foam::cellQuality::skewness() const
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{
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tmp<scalarField> tresult
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(
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new scalarField
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(
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mesh_.nCells(), 0.0
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)
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);
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scalarField& result = tresult();
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scalarField sumArea(mesh_.nCells(), 0.0);
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const vectorField& cellCtrs = mesh_.cellCentres();
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const vectorField& faceCtrs = mesh_.faceCentres();
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const vectorField& areas = mesh_.faceAreas();
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const labelList& own = mesh_.faceOwner();
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const labelList& nei = mesh_.faceNeighbour();
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forAll (nei, faceI)
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{
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scalar dOwn = mag
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(
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(faceCtrs[faceI] - cellCtrs[own[faceI]]) & areas[faceI]
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)/mag(areas[faceI]);
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scalar dNei = mag
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(
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(cellCtrs[nei[faceI]] - faceCtrs[faceI]) & areas[faceI]
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)/mag(areas[faceI]);
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point faceIntersection =
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cellCtrs[own[faceI]]
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+ (dOwn/(dOwn+dNei))*(cellCtrs[nei[faceI]] - cellCtrs[own[faceI]]);
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scalar skewness =
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mag(faceCtrs[faceI] - faceIntersection)
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/(mag(cellCtrs[nei[faceI]] - cellCtrs[own[faceI]]) + VSMALL);
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result[own[faceI]] = max(skewness, result[own[faceI]]);
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result[nei[faceI]] = max(skewness, result[nei[faceI]]);
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}
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forAll (mesh_.boundaryMesh(), patchI)
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{
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const unallocLabelList& faceCells =
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mesh_.boundaryMesh()[patchI].faceCells();
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const vectorField::subField faceCentres =
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mesh_.boundaryMesh()[patchI].faceCentres();
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const vectorField::subField faceAreas =
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mesh_.boundaryMesh()[patchI].faceAreas();
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forAll(faceCentres, faceI)
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{
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vector n = faceAreas[faceI]/mag(faceAreas[faceI]);
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point faceIntersection =
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cellCtrs[faceCells[faceI]]
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+ ((faceCentres[faceI] - cellCtrs[faceCells[faceI]])&n)*n;
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scalar skewness =
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mag(faceCentres[faceI] - faceIntersection)
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/(
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mag(faceCentres[faceI] - cellCtrs[faceCells[faceI]])
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+ VSMALL
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);
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result[faceCells[faceI]] = max(skewness, result[faceCells[faceI]]);
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}
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}
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return tresult;
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}
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Foam::tmp<Foam::scalarField> Foam::cellQuality::faceNonOrthogonality() const
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{
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tmp<scalarField> tresult
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(
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new scalarField
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(
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mesh_.nFaces(), 0.0
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)
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);
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scalarField& result = tresult();
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const vectorField& centres = mesh_.cellCentres();
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const vectorField& areas = mesh_.faceAreas();
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const labelList& own = mesh_.faceOwner();
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const labelList& nei = mesh_.faceNeighbour();
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forAll (nei, faceI)
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{
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vector d = centres[nei[faceI]] - centres[own[faceI]];
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vector s = areas[faceI];
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scalar magS = mag(s);
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scalar cosDDotS =
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radToDeg(Foam::acos(min(1.0, (d & s)/(mag(d)*magS + VSMALL))));
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result[faceI] = cosDDotS;
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}
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label globalFaceI = mesh_.nInternalFaces();
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forAll (mesh_.boundaryMesh(), patchI)
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{
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const unallocLabelList& faceCells =
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mesh_.boundaryMesh()[patchI].faceCells();
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const vectorField::subField faceCentres =
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mesh_.boundaryMesh()[patchI].faceCentres();
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const vectorField::subField faceAreas =
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mesh_.boundaryMesh()[patchI].faceAreas();
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forAll(faceCentres, faceI)
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{
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vector d = faceCentres[faceI] - centres[faceCells[faceI]];
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vector s = faceAreas[faceI];
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scalar magS = mag(s);
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scalar cosDDotS =
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radToDeg(Foam::acos(min(1.0, (d & s)/(mag(d)*magS + VSMALL))));
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result[globalFaceI++] = cosDDotS;
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}
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}
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return tresult;
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}
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Foam::tmp<Foam::scalarField> Foam::cellQuality::faceSkewness() const
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{
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tmp<scalarField> tresult
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(
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new scalarField
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(
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mesh_.nFaces(), 0.0
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)
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);
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scalarField& result = tresult();
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const vectorField& cellCtrs = mesh_.cellCentres();
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const vectorField& faceCtrs = mesh_.faceCentres();
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const vectorField& areas = mesh_.faceAreas();
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const labelList& own = mesh_.faceOwner();
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const labelList& nei = mesh_.faceNeighbour();
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forAll (nei, faceI)
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{
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scalar dOwn = mag
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(
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(faceCtrs[faceI] - cellCtrs[own[faceI]]) & areas[faceI]
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)/mag(areas[faceI]);
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scalar dNei = mag
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(
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(cellCtrs[nei[faceI]] - faceCtrs[faceI]) & areas[faceI]
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)/mag(areas[faceI]);
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point faceIntersection =
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cellCtrs[own[faceI]]
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+ (dOwn/(dOwn+dNei))*(cellCtrs[nei[faceI]] - cellCtrs[own[faceI]]);
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result[faceI] =
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mag(faceCtrs[faceI] - faceIntersection)
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/(mag(cellCtrs[nei[faceI]] - cellCtrs[own[faceI]]) + VSMALL);
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}
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label globalFaceI = mesh_.nInternalFaces();
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forAll (mesh_.boundaryMesh(), patchI)
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{
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const unallocLabelList& faceCells =
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mesh_.boundaryMesh()[patchI].faceCells();
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const vectorField::subField faceCentres =
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mesh_.boundaryMesh()[patchI].faceCentres();
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const vectorField::subField faceAreas =
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mesh_.boundaryMesh()[patchI].faceAreas();
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forAll(faceCentres, faceI)
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{
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vector n = faceAreas[faceI]/mag(faceAreas[faceI]);
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point faceIntersection =
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cellCtrs[faceCells[faceI]]
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+ ((faceCentres[faceI] - cellCtrs[faceCells[faceI]])&n)*n;
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result[globalFaceI++] =
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mag(faceCentres[faceI] - faceIntersection)
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/(
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mag(faceCentres[faceI] - cellCtrs[faceCells[faceI]])
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+ VSMALL
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);
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}
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}
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return tresult;
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}
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// ************************************************************************* //
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