a833a81560
Now faceZones are handled directly by the applications and the new faceZone::topoChange function so that any face can now be in any number of zones, significantly increasing the flexibility and usefulness of faceZones. This completes the generalisation of cellZone, faceZone and pointZone to support multiple zones for each cell, face or point respectively. Next step will be to make zones polymorphic and run-time selectable so that they can alter during the run and adapt to moving meshes for example.
323 lines
8.2 KiB
C++
323 lines
8.2 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) 2011-2024 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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surfaceToPatch
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Description
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Reads surface and applies surface regioning to a mesh. Uses repatchMesh
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to do the hard work.
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "Time.H"
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#include "repatchMesh.H"
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#include "polyMesh.H"
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#include "faceSet.H"
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#include "polyTopoChange.H"
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#include "globalMeshData.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Adds empty patch if not yet there. Returns patchID.
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label addPatch(polyMesh& mesh, const word& patchName)
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{
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label patchi = mesh.boundaryMesh().findIndex(patchName);
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if (patchi == -1)
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{
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const polyBoundaryMesh& patches = mesh.boundaryMesh();
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List<polyPatch*> newPatches(patches.size() + 1);
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patchi = 0;
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// Copy all old patches
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forAll(patches, i)
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{
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const polyPatch& pp = patches[i];
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newPatches[patchi] =
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pp.clone
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(
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patches,
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patchi,
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pp.size(),
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pp.start()
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).ptr();
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patchi++;
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}
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// Add zero-sized patch
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newPatches[patchi] =
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new polyPatch
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(
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patchName,
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0,
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mesh.nFaces(),
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patchi,
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patches,
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polyPatch::typeName
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);
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mesh.removeBoundary();
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mesh.addPatches(newPatches);
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Pout<< "Created patch " << patchName << " at " << patchi << endl;
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}
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else
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{
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Pout<< "Reusing patch " << patchName << " at " << patchi << endl;
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}
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return patchi;
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}
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// Repatch single face. Return true if patch changed.
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bool repatchFace
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(
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const polyMesh& mesh,
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const repatchMesh& rMesh,
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const labelList& nearest,
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const labelList& surfToMeshPatch,
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const label facei,
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polyTopoChange& meshMod
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)
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{
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bool changed = false;
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label bFacei = facei - mesh.nInternalFaces();
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if (nearest[bFacei] != -1)
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{
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// Use boundary mesh one.
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const label rMeshPatchID = rMesh.whichPatch(nearest[bFacei]);
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const label patchID = surfToMeshPatch[rMeshPatchID];
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if (patchID != mesh.boundaryMesh().whichPatch(facei))
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{
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const label own = mesh.faceOwner()[facei];
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meshMod.modifyFace
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(
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mesh.faces()[facei],// 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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patchID // patch for face
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);
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changed = true;
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}
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}
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else
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{
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changed = false;
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}
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return changed;
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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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"reads surface and applies surface regioning to a mesh"
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);
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argList::noParallel();
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argList::validArgs.append("surface file");
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argList::addOption
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(
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"faceSet",
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"name",
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"only repatch the faces in specified faceSet"
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);
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argList::addOption
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(
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"tol",
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"scalar",
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"search tolerance as fraction of mesh size (default 1e-3)"
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);
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#include "setRootCase.H"
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#include "createTime.H"
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#include "createPolyMesh.H"
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const fileName surfName = args[1];
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Info<< "Reading surface from " << surfName << " ..." << endl;
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word setName;
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const bool readSet = args.optionReadIfPresent("faceSet", setName);
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if (readSet)
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{
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Info<< "Repatching only the faces in faceSet " << setName
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<< " according to nearest surface triangle ..." << endl;
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}
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else
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{
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Info<< "Patching all boundary faces according to nearest surface"
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<< " triangle ..." << endl;
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}
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const scalar searchTol = args.optionLookupOrDefault("tol", 1e-3);
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// Get search box. Anything not within this box will not be considered.
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const boundBox& meshBb = mesh.bounds();
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const vector searchSpan = searchTol * meshBb.span();
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Info<< "All boundary faces further away than " << searchTol
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<< " of mesh bounding box " << meshBb
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<< " will keep their patch label ..." << endl;
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Info<< "Before patching:" << nl
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<< " patch\tsize" << endl;
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forAll(mesh.boundaryMesh(), patchi)
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{
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Info<< " " << mesh.boundaryMesh()[patchi].name() << '\t'
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<< mesh.boundaryMesh()[patchi].size() << nl;
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}
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Info<< endl;
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repatchMesh rMesh;
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// Load in the surface.
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rMesh.readTriSurface(surfName);
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// Add all the boundaryMesh patches to the mesh.
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const PtrList<repatchPatch>& bPatches = rMesh.patches();
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// Map from surface patch ( = boundaryMesh patch) to polyMesh patch
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labelList patchMap(bPatches.size());
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forAll(bPatches, i)
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{
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patchMap[i] = addPatch(mesh, bPatches[i].name());
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}
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// Obtain nearest face in rMesh for each boundary face in mesh that
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// is within search span.
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// Note: should only determine for faceSet if working with that.
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labelList nearest(rMesh.getNearest(mesh, searchSpan));
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{
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// Dump unmatched faces to faceSet for debugging.
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faceSet unmatchedFaces(mesh, "unmatchedFaces", nearest.size()/100);
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forAll(nearest, bFacei)
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{
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if (nearest[bFacei] == -1)
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{
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unmatchedFaces.insert(mesh.nInternalFaces() + bFacei);
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}
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}
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Pout<< "Writing all " << unmatchedFaces.size()
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<< " unmatched faces to faceSet "
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<< unmatchedFaces.name()
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<< endl;
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unmatchedFaces.write();
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}
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polyTopoChange meshMod(mesh);
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label nChanged = 0;
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if (readSet)
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{
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faceSet faceLabels(mesh, setName);
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Info<< "Read " << faceLabels.size() << " faces to repatch ..." << endl;
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forAllConstIter(faceSet, faceLabels, iter)
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{
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label facei = iter.key();
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if (repatchFace(mesh, rMesh, nearest, patchMap, facei, meshMod))
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{
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nChanged++;
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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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forAll(nearest, bFacei)
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{
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label facei = mesh.nInternalFaces() + bFacei;
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if (repatchFace(mesh, rMesh, nearest, patchMap, facei, meshMod))
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{
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nChanged++;
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}
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}
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}
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Pout<< "Changed " << nChanged << " boundary faces." << nl << endl;
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if (nChanged > 0)
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{
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meshMod.changeMesh(mesh);
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Info<< "After patching:" << nl
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<< " patch\tsize" << endl;
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forAll(mesh.boundaryMesh(), patchi)
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{
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Info<< " " << mesh.boundaryMesh()[patchi].name() << '\t'
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<< mesh.boundaryMesh()[patchi].size() << endl;
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}
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Info<< endl;
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runTime++;
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// Write resulting mesh
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Info<< "Writing modified mesh to time "
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<< runTime.userTimeName() << endl;
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mesh.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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