509 lines
14 KiB
C
509 lines
14 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 held by original author
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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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Application
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blockMesh
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Description
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A multi-block mesh generator.
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Uses the block mesh description found in
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@a constant/polyMesh/blockMeshDict
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(or @a constant/\<region\>/polyMesh/blockMeshDict).
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Usage
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- blockMesh [OPTION]
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@param -blockTopology \n
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Write the topology as a set of edges in OBJ format.
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@param -region \<name\> \n
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Specify an alternative mesh region.
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@param -dict \<dictionary\> \n
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Specify an alternative dictionary for the block mesh description.
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\*---------------------------------------------------------------------------*/
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#include "Time.H"
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#include "IOdictionary.H"
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#include "IOPtrList.H"
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#include "blockMesh.H"
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#include "preservePatchTypes.H"
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#include "emptyPolyPatch.H"
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#include "cellSet.H"
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#include "argList.H"
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#include "OSspecific.H"
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#include "OFstream.H"
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#include "Pair.H"
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#include "mapPolyMesh.H"
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#include "polyTopoChanger.H"
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#include "slidingInterface.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Main program:
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int main(int argc, char *argv[])
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{
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argList::noParallel();
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argList::validOptions.insert("blockTopology", "");
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argList::validOptions.insert("dict", "dictionary");
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# include "addRegionOption.H"
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# include "setRootCase.H"
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# include "createTime.H"
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const word dictName("blockMeshDict");
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word regionName;
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fileName polyMeshDir;
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if (args.optionFound("region"))
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{
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// constant/<region>/polyMesh/blockMeshDict
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regionName = args.option("region");
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polyMeshDir = regionName/polyMesh::meshSubDir;
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Info<< nl << "Generating mesh for region " << regionName << endl;
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}
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else
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{
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// constant/polyMesh/blockMeshDict
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regionName = polyMesh::defaultRegion;
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polyMeshDir = polyMesh::meshSubDir;
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}
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autoPtr<IOobject> meshDictIoPtr;
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if (args.optionFound("dict"))
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{
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fileName dictPath(args.option("dict"));
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meshDictIoPtr.set
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(
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new IOobject
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(
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(
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isDir(dictPath)
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? dictPath/dictName
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: dictPath
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),
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runTime,
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IOobject::MUST_READ,
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IOobject::NO_WRITE,
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false
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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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meshDictIoPtr.set
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(
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new IOobject
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(
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dictName,
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runTime.constant(),
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polyMeshDir,
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runTime,
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IOobject::MUST_READ,
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IOobject::NO_WRITE,
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false
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)
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);
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}
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if (!meshDictIoPtr->headerOk())
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{
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FatalErrorIn(args.executable())
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<< "Cannot open mesh description file\n "
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<< meshDictIoPtr->objectPath()
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<< nl
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<< exit(FatalError);
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}
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Info<< nl << "Creating block mesh from\n "
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<< meshDictIoPtr->objectPath() << nl << endl;
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IOdictionary meshDict(meshDictIoPtr());
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blockMesh blocks(meshDict);
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if (args.optionFound("blockTopology"))
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{
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// Write mesh as edges.
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{
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fileName objMeshFile("blockTopology.obj");
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OFstream str(runTime.path()/objMeshFile);
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Info<< nl << "Dumping block structure as Lightwave obj format"
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<< " to " << objMeshFile << endl;
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blocks.writeTopology(str);
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}
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// Write centres of blocks
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{
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fileName objCcFile("blockCentres.obj");
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OFstream str(runTime.path()/objCcFile);
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Info<< nl << "Dumping block centres as Lightwave obj format"
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<< " to " << objCcFile << endl;
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const polyMesh& topo = blocks.topology();
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const pointField& cellCentres = topo.cellCentres();
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forAll(cellCentres, cellI)
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{
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//point cc = b.blockShape().centre(b.points());
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const point& cc = cellCentres[cellI];
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str << "v " << cc.x() << ' ' << cc.y() << ' ' << cc.z() << nl;
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}
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}
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Info<< nl << "end" << endl;
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return 0;
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}
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Info<< nl << "Creating mesh from block mesh" << endl;
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wordList patchNames = blocks.patchNames();
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wordList patchTypes = blocks.patchTypes();
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word defaultFacesName = "defaultFaces";
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word defaultFacesType = emptyPolyPatch::typeName;
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wordList patchPhysicalTypes = blocks.patchPhysicalTypes();
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preservePatchTypes
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(
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runTime,
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runTime.constant(),
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polyMeshDir,
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patchNames,
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patchTypes,
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defaultFacesName,
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defaultFacesType,
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patchPhysicalTypes
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);
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polyMesh mesh
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(
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IOobject
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(
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regionName,
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runTime.constant(),
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runTime
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),
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xferCopy(blocks.points()),
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blocks.cells(),
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blocks.patches(),
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patchNames,
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patchTypes,
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defaultFacesName,
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defaultFacesType,
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patchPhysicalTypes
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);
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// Read in a list of dictionaries for the merge patch pairs
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if (meshDict.found("mergePatchPairs"))
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{
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List<Pair<word> > mergePatchPairs
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(
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meshDict.lookup("mergePatchPairs")
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);
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if (mergePatchPairs.size() > 0)
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{
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// Create and add point and face zones and mesh modifiers
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List<pointZone*> pz(mergePatchPairs.size());
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List<faceZone*> fz(3*mergePatchPairs.size());
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List<cellZone*> cz(0);
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forAll (mergePatchPairs, pairI)
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{
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const word mergeName
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(
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mergePatchPairs[pairI].first()
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+ mergePatchPairs[pairI].second()
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+ name(pairI)
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);
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pz[pairI] = new pointZone
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(
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mergeName + "CutPointZone",
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labelList(0),
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0,
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mesh.pointZones()
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);
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// Master patch
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const word masterPatchName(mergePatchPairs[pairI].first());
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const polyPatch& masterPatch =
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mesh.boundaryMesh()
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[
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mesh.boundaryMesh().findPatchID(masterPatchName)
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];
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labelList isf(masterPatch.size());
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forAll (isf, i)
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{
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isf[i] = masterPatch.start() + i;
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}
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fz[3*pairI] = new faceZone
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(
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mergeName + "MasterZone",
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isf,
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boolList(masterPatch.size(), false),
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0,
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mesh.faceZones()
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);
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// Slave patch
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const word slavePatchName(mergePatchPairs[pairI].second());
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const polyPatch& slavePatch =
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mesh.boundaryMesh()
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[
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mesh.boundaryMesh().findPatchID(slavePatchName)
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];
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labelList osf(slavePatch.size());
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forAll (osf, i)
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{
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osf[i] = slavePatch.start() + i;
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}
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fz[3*pairI + 1] = new faceZone
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(
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mergeName + "SlaveZone",
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osf,
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boolList(slavePatch.size(), false),
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1,
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mesh.faceZones()
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);
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// Add empty zone for cut faces
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fz[3*pairI + 2] = new faceZone
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(
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mergeName + "CutFaceZone",
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labelList(0),
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boolList(0, false),
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2,
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mesh.faceZones()
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);
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} // end of all merge pairs
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Info << "Adding point and face zones" << endl;
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mesh.addZones(pz, fz, cz);
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Info << "Creating topo change" << endl;
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polyTopoChanger attacher(mesh);
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attacher.setSize(mergePatchPairs.size());
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forAll (mergePatchPairs, pairI)
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{
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const word mergeName
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(
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mergePatchPairs[pairI].first()
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+ mergePatchPairs[pairI].second()
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+ name(pairI)
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);
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// Add the sliding interface mesh modifier
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attacher.set
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(
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pairI,
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new slidingInterface
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(
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"couple" + name(pairI),
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pairI,
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attacher,
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mergeName + "MasterZone",
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mergeName + "SlaveZone",
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mergeName + "CutPointZone",
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mergeName + "CutFaceZone",
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mergePatchPairs[pairI].first(),
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mergePatchPairs[pairI].second(),
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slidingInterface::INTEGRAL, // always integral
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false, // attach-detach action
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intersection::VISIBLE
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)
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);
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}
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attacher.changeMesh();
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// Clean the mesh after attach
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labelList patchSizes(mesh.boundaryMesh().size());
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labelList patchStarts(mesh.boundaryMesh().size());
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forAll (mesh.boundaryMesh(), patchI)
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{
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patchSizes[patchI] = mesh.boundaryMesh()[patchI].size();
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patchStarts[patchI] = mesh.boundaryMesh()[patchI].start();
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}
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mesh.resetPrimitives
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(
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xferCopy<pointField>(mesh.points()),
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xferCopy<faceList>(mesh.faces()),
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xferCopy<labelList>(mesh.faceOwner()),
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xferCopy<labelList>(mesh.faceNeighbour()),
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patchSizes,
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patchStarts
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);
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mesh.setInstance(runTime.constant());
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mesh.removeZones();
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}
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}
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else
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{
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Info<< nl << "There are no merge patch pairs" << endl;
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}
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// Set any cellZones (note: cell labelling unaffected by above
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// mergePatchPairs)
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label nZones = blocks.numZonedBlocks();
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if (nZones > 0)
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{
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Info<< nl << "Adding cell zones" << endl;
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// Map from zoneName to cellZone index
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HashTable<label> zoneMap(nZones);
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// Cells per zone.
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List<DynamicList<label> > zoneCells(nZones);
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// Running cell counter
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label cellI = 0;
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// Largest zone so far
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label freeZoneI = 0;
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forAll(blocks, blockI)
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{
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const block& b = blocks[blockI];
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const labelListList& blockCells = b.cells();
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const word& zoneName = b.blockDef().zoneName();
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if (zoneName.size())
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{
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HashTable<label>::const_iterator iter = zoneMap.find(zoneName);
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label zoneI;
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if (iter == zoneMap.end())
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{
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zoneI = freeZoneI++;
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Info<< " " << zoneI << '\t' << zoneName << endl;
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zoneMap.insert(zoneName, zoneI);
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}
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else
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{
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zoneI = iter();
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}
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forAll(blockCells, i)
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{
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zoneCells[zoneI].append(cellI++);
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}
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}
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else
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{
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cellI += b.cells().size();
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}
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}
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List<cellZone*> cz(zoneMap.size());
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Info<< nl << "Writing cell zones as cellSets" << endl;
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forAllConstIter(HashTable<label>, zoneMap, iter)
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{
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label zoneI = iter();
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cz[zoneI]= new cellZone
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(
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iter.key(),
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zoneCells[zoneI].shrink(),
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zoneI,
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mesh.cellZones()
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);
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// Write as cellSet for ease of processing
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cellSet cset
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(
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mesh,
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iter.key(),
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labelHashSet(zoneCells[zoneI].shrink())
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);
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cset.write();
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}
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mesh.pointZones().setSize(0);
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mesh.faceZones().setSize(0);
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mesh.cellZones().setSize(0);
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mesh.addZones(List<pointZone*>(0), List<faceZone*>(0), cz);
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}
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// Set the precision of the points data to 10
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IOstream::defaultPrecision(10);
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Info << nl << "Writing polyMesh" << endl;
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mesh.removeFiles();
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if (!mesh.write())
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{
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FatalErrorIn(args.executable())
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<< "Failed writing polyMesh."
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<< exit(FatalError);
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}
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Info<< nl << "End" << endl;
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return 0;
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}
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// ************************************************************************* //
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