mirror of
https://develop.openfoam.com/Development/openfoam.git
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520 lines
16 KiB
C
520 lines
16 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) 1991-2008 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 "removeCells.H"
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#include "polyMesh.H"
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#include "polyTopoChange.H"
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#include "polyRemoveCell.H"
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#include "polyRemoveFace.H"
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#include "polyModifyFace.H"
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#include "polyRemovePoint.H"
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#include "syncTools.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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defineTypeNameAndDebug(removeCells, 0);
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}
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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// Remove count of elements of f.
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void Foam::removeCells::uncount
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(
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const labelList& f,
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labelList& nUsage
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)
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{
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forAll(f, fp)
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{
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nUsage[f[fp]]--;
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}
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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// Construct from mesh
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Foam::removeCells::removeCells
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(
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const polyMesh& mesh,
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const bool syncPar
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)
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:
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mesh_(mesh),
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syncPar_(syncPar)
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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//- Get labels of exposed faces. These are
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// - internal faces that become boundary faces
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// - coupled faces that become uncoupled (since on of the sides
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// gets deleted)
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Foam::labelList Foam::removeCells::getExposedFaces
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(
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const labelList& cellLabels
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) const
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{
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// Create list of cells to be removed
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boolList removedCell(mesh_.nCells(), false);
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// Go from labelList of cells-to-remove to a boolList.
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forAll(cellLabels, i)
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{
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removedCell[cellLabels[i]] = true;
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}
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const labelList& faceOwner = mesh_.faceOwner();
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const labelList& faceNeighbour = mesh_.faceNeighbour();
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// Count cells using face.
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labelList nCellsUsingFace(mesh_.nFaces(), 0);
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for (label faceI = 0; faceI < mesh_.nInternalFaces(); faceI++)
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{
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label own = faceOwner[faceI];
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label nei = faceNeighbour[faceI];
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if (!removedCell[own])
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{
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nCellsUsingFace[faceI]++;
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}
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if (!removedCell[nei])
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{
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nCellsUsingFace[faceI]++;
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}
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}
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for (label faceI = mesh_.nInternalFaces(); faceI < mesh_.nFaces(); faceI++)
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{
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label own = faceOwner[faceI];
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if (!removedCell[own])
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{
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nCellsUsingFace[faceI]++;
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}
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}
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// Coupled faces: add number of cells using face across couple.
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if (syncPar_)
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{
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syncTools::syncFaceList
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(
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mesh_,
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nCellsUsingFace,
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plusEqOp<label>()
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);
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}
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// Now nCellsUsingFace:
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// 0 : internal face whose both cells get deleted
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// boundary face whose all cells get deleted
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// 1 : internal face that gets exposed
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// unaffected (uncoupled) boundary face
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// coupled boundary face that gets exposed ('uncoupled')
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// 2 : unaffected internal face
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// unaffected coupled boundary face
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DynamicList<label> exposedFaces(mesh_.nFaces()/10);
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for (label faceI = 0; faceI < mesh_.nInternalFaces(); faceI++)
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{
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if (nCellsUsingFace[faceI] == 1)
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{
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exposedFaces.append(faceI);
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}
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}
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const polyBoundaryMesh& patches = mesh_.boundaryMesh();
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forAll(patches, patchI)
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{
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const polyPatch& pp = patches[patchI];
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if (pp.coupled())
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{
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label faceI = pp.start();
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forAll(pp, i)
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{
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label own = faceOwner[faceI];
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if (nCellsUsingFace[faceI] == 1 && !removedCell[own])
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{
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// My owner not removed but other side is so has to become
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// normal, uncoupled, boundary face
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exposedFaces.append(faceI);
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}
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faceI++;
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}
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}
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}
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return exposedFaces.shrink();
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}
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void Foam::removeCells::setRefinement
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(
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const labelList& cellLabels,
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const labelList& exposedFaceLabels,
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const labelList& exposedPatchIDs,
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polyTopoChange& meshMod
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) const
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{
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const polyBoundaryMesh& patches = mesh_.boundaryMesh();
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if (exposedFaceLabels.size() != exposedPatchIDs.size())
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{
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FatalErrorIn
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(
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"removeCells::setRefinement(const labelList&"
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", const labelList&, const labelList&, polyTopoChange&)"
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) << "Size of exposedFaceLabels " << exposedFaceLabels.size()
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<< " differs from size of exposedPatchIDs "
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<< exposedPatchIDs.size()
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<< abort(FatalError);
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}
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// List of new patchIDs
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labelList newPatchID(mesh_.nFaces(), -1);
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forAll(exposedFaceLabels, i)
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{
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label patchI = exposedPatchIDs[i];
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if (patchI < 0 || patchI >= patches.size())
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{
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FatalErrorIn
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(
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"removeCells::setRefinement(const labelList&"
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", const labelList&, const labelList&, polyTopoChange&)"
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) << "Invalid patch " << patchI
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<< " for exposed face " << exposedFaceLabels[i] << endl
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<< "Valid patches 0.." << patches.size()-1
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<< abort(FatalError);
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}
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if (patches[patchI].coupled())
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{
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FatalErrorIn
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(
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"removeCells::setRefinement(const labelList&"
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", const labelList&, const labelList&, polyTopoChange&)"
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) << "Trying to put exposed face " << exposedFaceLabels[i]
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<< " into a coupled patch : " << patches[patchI].name()
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<< endl
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<< "This is illegal."
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<< abort(FatalError);
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}
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newPatchID[exposedFaceLabels[i]] = patchI;
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}
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// Create list of cells to be removed
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boolList removedCell(mesh_.nCells(), false);
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// Go from labelList of cells-to-remove to a boolList and remove all
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// cells mentioned.
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forAll(cellLabels, i)
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{
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label cellI = cellLabels[i];
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removedCell[cellI] = true;
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//Pout<< "Removing cell " << cellI
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// << " cc:" << mesh_.cellCentres()[cellI] << endl;
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meshMod.setAction(polyRemoveCell(cellI));
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}
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// Remove faces that are no longer used. Modify faces that
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// are used by one cell only.
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const faceList& faces = mesh_.faces();
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const labelList& faceOwner = mesh_.faceOwner();
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const labelList& faceNeighbour = mesh_.faceNeighbour();
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const faceZoneMesh& faceZones = mesh_.faceZones();
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// Count starting number of faces using each point. Keep up to date whenever
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// removing a face.
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labelList nFacesUsingPoint(mesh_.nPoints(), 0);
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forAll(faces, faceI)
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{
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const face& f = faces[faceI];
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forAll(f, fp)
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{
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nFacesUsingPoint[f[fp]]++;
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}
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}
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for (label faceI = 0; faceI < mesh_.nInternalFaces(); faceI++)
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{
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const face& f = faces[faceI];
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label own = faceOwner[faceI];
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label nei = faceNeighbour[faceI];
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if (removedCell[own])
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{
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if (removedCell[nei])
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{
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// Face no longer used
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//Pout<< "Removing internal face " << faceI
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// << " fc:" << mesh_.faceCentres()[faceI] << endl;
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meshMod.setAction(polyRemoveFace(faceI));
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uncount(f, nFacesUsingPoint);
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}
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else
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{
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if (newPatchID[faceI] == -1)
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{
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FatalErrorIn
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(
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"removeCells::setRefinement(const labelList&"
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", const labelList&, const labelList&"
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", polyTopoChange&)"
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) << "No patchID provided for exposed face " << faceI
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<< " on cell " << nei << nl
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<< "Did you provide patch IDs for all exposed faces?"
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<< abort(FatalError);
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}
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// nei is remaining cell. FaceI becomes external cell
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label zoneID = faceZones.whichZone(faceI);
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bool zoneFlip = false;
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if (zoneID >= 0)
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{
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const faceZone& fZone = faceZones[zoneID];
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zoneFlip = fZone.flipMap()[fZone.whichFace(faceI)];
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}
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//Pout<< "Putting exposed internal face " << faceI
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// << " fc:" << mesh_.faceCentres()[faceI]
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// << " into patch " << newPatchID[faceI] << endl;
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meshMod.setAction
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(
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polyModifyFace
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(
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f.reverseFace(), // modified face
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faceI, // label of face being modified
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nei, // owner
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-1, // neighbour
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true, // face flip
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newPatchID[faceI], // patch for face
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false, // remove from zone
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zoneID, // zone for face
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zoneFlip, // face flip in zone
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-1
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)
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);
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}
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}
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else if (removedCell[nei])
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{
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if (newPatchID[faceI] == -1)
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{
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FatalErrorIn
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(
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"removeCells::setRefinement(const labelList&"
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", const labelList&, const labelList&"
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", polyTopoChange&)"
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) << "No patchID provided for exposed face " << faceI
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<< " on cell " << own << nl
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<< "Did you provide patch IDs for all exposed faces?"
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<< abort(FatalError);
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}
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//Pout<< "Putting exposed internal face " << faceI
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// << " fc:" << mesh_.faceCentres()[faceI]
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// << " into patch " << newPatchID[faceI] << endl;
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// own is remaining cell. FaceI becomes external cell.
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label zoneID = faceZones.whichZone(faceI);
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bool zoneFlip = false;
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if (zoneID >= 0)
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{
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const faceZone& fZone = faceZones[zoneID];
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zoneFlip = fZone.flipMap()[fZone.whichFace(faceI)];
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}
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meshMod.setAction
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(
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polyModifyFace
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(
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f, // modified face
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faceI, // label of face being modified
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own, // owner
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-1, // neighbour
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false, // face flip
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newPatchID[faceI], // patch for face
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false, // remove from zone
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zoneID, // zone for face
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zoneFlip, // face flip in zone
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-1
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)
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);
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}
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}
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forAll(patches, patchI)
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{
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const polyPatch& pp = patches[patchI];
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if (pp.coupled())
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{
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label faceI = pp.start();
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forAll(pp, i)
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{
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if (newPatchID[faceI] != -1)
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{
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//Pout<< "Putting uncoupled coupled face " << faceI
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// << " fc:" << mesh_.faceCentres()[faceI]
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// << " into patch " << newPatchID[faceI] << endl;
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label zoneID = faceZones.whichZone(faceI);
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bool zoneFlip = false;
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if (zoneID >= 0)
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{
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const faceZone& fZone = faceZones[zoneID];
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zoneFlip = fZone.flipMap()[fZone.whichFace(faceI)];
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}
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meshMod.setAction
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(
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polyModifyFace
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(
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faces[faceI], // modified face
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faceI, // label of face
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faceOwner[faceI], // owner
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-1, // neighbour
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false, // face flip
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newPatchID[faceI], // patch for face
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false, // remove from zone
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zoneID, // zone for face
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zoneFlip, // face flip in zone
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-1
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)
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);
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}
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else if (removedCell[faceOwner[faceI]])
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{
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// Face no longer used
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//Pout<< "Removing boundary face " << faceI
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// << " fc:" << mesh_.faceCentres()[faceI]
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// << endl;
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meshMod.setAction(polyRemoveFace(faceI));
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uncount(faces[faceI], nFacesUsingPoint);
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}
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faceI++;
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}
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}
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else
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{
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label faceI = pp.start();
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forAll(pp, i)
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{
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if (newPatchID[faceI] != -1)
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{
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FatalErrorIn
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(
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"removeCells::setRefinement(const labelList&"
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", const labelList&, const labelList&"
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", polyTopoChange&)"
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) << "new patchID provided for boundary face " << faceI
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<< " even though it is not on a coupled face."
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<< abort(FatalError);
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}
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if (removedCell[faceOwner[faceI]])
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{
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// Face no longer used
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//Pout<< "Removing boundary face " << faceI
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// << " fc:" << mesh_.faceCentres()[faceI]
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// << endl;
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meshMod.setAction(polyRemoveFace(faceI));
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uncount(faces[faceI], nFacesUsingPoint);
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}
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faceI++;
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}
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}
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}
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// Remove points that are no longer used.
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// Loop rewritten to not use pointFaces.
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forAll(nFacesUsingPoint, pointI)
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{
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if (nFacesUsingPoint[pointI] == 0)
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{
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//Pout<< "Removing unused point " << pointI
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// << " at:" << mesh_.points()[pointI] << endl;
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meshMod.setAction(polyRemovePoint(pointI));
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}
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else if (nFacesUsingPoint[pointI] == 1)
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{
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WarningIn
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(
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"removeCells::setRefinement(const labelList&"
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", const labelList&, const labelList&"
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", polyTopoChange&)"
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) << "point " << pointI << " at coordinate "
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<< mesh_.points()[pointI]
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<< " is only used by 1 face after removing cells."
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<< " This probably results in an illegal mesh."
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<< endl;
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}
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}
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}
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// ************************************************************************* //
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