c8a1c95b06
For many information and diagnostic messages the absolute path of the object is not required and the local path relative to the current case is sufficient; the new localObjectPath() member function of IOobject provides a convenient way of printing this.
380 lines
11 KiB
C
380 lines
11 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration | Website: https://openfoam.org
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\\ / A nd | Copyright (C) 2011-2020 OpenFOAM Foundation
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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
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the Free Software Foundation, either version 3 of the License, or
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(at your 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, see <http://www.gnu.org/licenses/>.
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Application
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mergeOrSplitBaffles
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Description
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Detects faces that share points (baffles). Either merge them or
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duplicate the points.
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Notes:
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- can only handle pairwise boundary faces. So three faces using
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the same points is not handled (is illegal mesh anyway)
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- there is no option to only split/merge some baffles.
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- surfaces consisting of duplicate faces can be topologically split
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if the points on the interior of the surface cannot walk to all the
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cells that use them in one go.
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- Parallel operation (where duplicate face is perpendicular to a coupled
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boundary) is supported but not really tested.
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(Note that coupled faces themselves are not seen as duplicate faces)
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "Time.H"
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#include "syncTools.H"
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#include "faceSet.H"
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#include "pointSet.H"
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#include "meshTools.H"
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#include "polyTopoChange.H"
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#include "polyRemoveFace.H"
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#include "polyModifyFace.H"
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#include "indirectPrimitivePatch.H"
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#include "processorPolyPatch.H"
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#include "localPointRegion.H"
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#include "duplicatePoints.H"
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#include "ReadFields.H"
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#include "volFields.H"
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#include "surfaceFields.H"
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#include "pointFields.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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void insertDuplicateMerge
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(
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const polyMesh& mesh,
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const labelList& duplicates,
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polyTopoChange& meshMod
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)
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{
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const faceList& faces = mesh.faces();
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const labelList& faceOwner = mesh.faceOwner();
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const faceZoneMesh& faceZones = mesh.faceZones();
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forAll(duplicates, bFacei)
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{
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label otherFacei = duplicates[bFacei];
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if (otherFacei != -1 && otherFacei > bFacei)
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{
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// Two duplicate faces. Merge.
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label face0 = mesh.nInternalFaces() + bFacei;
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label face1 = mesh.nInternalFaces() + otherFacei;
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label own0 = faceOwner[face0];
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label own1 = faceOwner[face1];
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if (own0 < own1)
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{
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// Use face0 as the new internal face.
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label zoneID = faceZones.whichZone(face0);
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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(face0)];
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}
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meshMod.setAction(polyRemoveFace(face1));
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meshMod.setAction
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(
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polyModifyFace
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(
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faces[face0], // modified face
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face0, // label of face being modified
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own0, // owner
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own1, // neighbour
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false, // face flip
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-1, // 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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)
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);
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}
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else
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{
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// Use face1 as the new internal face.
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label zoneID = faceZones.whichZone(face1);
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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(face1)];
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}
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meshMod.setAction(polyRemoveFace(face0));
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meshMod.setAction
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(
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polyModifyFace
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(
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faces[face1], // modified face
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face1, // label of face being modified
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own1, // owner
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own0, // neighbour
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false, // face flip
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-1, // 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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)
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);
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}
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}
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}
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}
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labelList findBaffles(const polyMesh& mesh, const labelList& boundaryFaces)
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{
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// Get all duplicate face labels (in boundaryFaces indices!).
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labelList duplicates = localPointRegion::findDuplicateFaces
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(
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mesh,
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boundaryFaces
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);
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// Check that none are on processor patches
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const polyBoundaryMesh& patches = mesh.boundaryMesh();
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forAll(duplicates, bFacei)
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{
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if (duplicates[bFacei] != -1)
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{
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label facei = mesh.nInternalFaces() + bFacei;
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label patchi = patches.whichPatch(facei);
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if (isA<processorPolyPatch>(patches[patchi]))
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{
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FatalErrorInFunction
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<< "Duplicate face " << facei
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<< " is on a processorPolyPatch."
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<< "This is not allowed." << nl
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<< "Face:" << facei
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<< " is on patch:" << patches[patchi].name()
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<< abort(FatalError);
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}
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}
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}
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// Write to faceSet for ease of postprocessing.
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{
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faceSet duplicateSet
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(
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mesh,
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"duplicateFaces",
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(mesh.nFaces() - mesh.nInternalFaces())/256
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);
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forAll(duplicates, bFacei)
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{
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label otherFacei = duplicates[bFacei];
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if (otherFacei != -1 && otherFacei > bFacei)
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{
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duplicateSet.insert(mesh.nInternalFaces() + bFacei);
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duplicateSet.insert(mesh.nInternalFaces() + otherFacei);
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}
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}
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Pout<< "Writing " << duplicateSet.size()
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<< " duplicate faces to faceSet " << duplicateSet.localObjectPath()
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<< nl << endl;
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duplicateSet.write();
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}
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return duplicates;
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}
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int main(int argc, char *argv[])
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{
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argList::addNote
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(
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"Detect faces that share points (baffles).\n"
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"Merge them or duplicate the points."
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);
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#include "addOverwriteOption.H"
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#include "addRegionOption.H"
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argList::addBoolOption
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(
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"detectOnly",
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"find baffles only, but do not merge or split them"
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);
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argList::addBoolOption
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(
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"split",
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"topologically split duplicate surfaces"
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);
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argList::addBoolOption
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(
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"fields",
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"update fields"
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);
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#include "setRootCase.H"
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#include "createTime.H"
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runTime.functionObjects().off();
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#include "createNamedMesh.H"
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const word oldInstance = mesh.pointsInstance();
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const bool split = args.optionFound("split");
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const bool overwrite = args.optionFound("overwrite");
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const bool detectOnly = args.optionFound("detectOnly");
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const bool fields = args.optionFound("fields");
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// Collect all boundary faces
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labelList boundaryFaces(mesh.nFaces() - mesh.nInternalFaces());
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forAll(boundaryFaces, i)
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{
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boundaryFaces[i] = i+mesh.nInternalFaces();
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}
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if (detectOnly)
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{
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findBaffles(mesh, boundaryFaces);
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return 0;
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}
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// Read objects in time directory
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IOobjectList objects(mesh, runTime.timeName());
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if (fields) Info<< "Reading geometric fields" << nl << endl;
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#include "readVolFields.H"
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#include "readSurfaceFields.H"
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#include "readPointFields.H"
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Info<< endl;
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// Mesh change engine
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polyTopoChange meshMod(mesh);
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if (split)
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{
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Pout<< "Topologically splitting duplicate surfaces"
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<< ", i.e. duplicating points internal to duplicate surfaces."
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<< nl << endl;
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// Analyse which points need to be duplicated
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localPointRegion regionSide(mesh);
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// Point duplication engine
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duplicatePoints pointDuplicator(mesh);
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// Insert topo changes
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pointDuplicator.setRefinement(regionSide, meshMod);
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}
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else
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{
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Pout<< "Merging duplicate faces."
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<< nl << endl;
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// Get all duplicate face labels (in boundaryFaces indices!).
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labelList duplicates(findBaffles(mesh, boundaryFaces));
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// Merge into internal faces.
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insertDuplicateMerge(mesh, duplicates, meshMod);
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}
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if (!overwrite)
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{
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runTime++;
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}
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// Change the mesh. No inflation.
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autoPtr<mapPolyMesh> map = meshMod.changeMesh(mesh, false);
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// Update fields
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mesh.updateMesh(map);
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// Move mesh (since morphing does not do this)
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if (map().hasMotionPoints())
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{
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mesh.movePoints(map().preMotionPoints());
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}
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if (overwrite)
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{
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mesh.setInstance(oldInstance);
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}
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Pout<< "Writing mesh to time " << runTime.timeName() << endl;
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mesh.write();
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// Dump duplicated points (if any)
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if (split)
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{
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const labelList& pointMap = map().pointMap();
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labelList nDupPerPoint(map().nOldPoints(), 0);
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pointSet dupPoints(mesh, "duplicatedPoints", 100);
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forAll(pointMap, pointi)
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{
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label oldPointi = pointMap[pointi];
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nDupPerPoint[oldPointi]++;
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if (nDupPerPoint[oldPointi] > 1)
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{
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dupPoints.insert(map().reversePointMap()[oldPointi]);
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dupPoints.insert(pointi);
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}
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}
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Pout<< "Writing " << dupPoints.size()
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<< " duplicated points to pointSet "
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<< dupPoints.localObjectPath() << nl << endl;
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dupPoints.write();
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}
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Info<< "End\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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