252 lines
7.7 KiB
C
252 lines
7.7 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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particleTracks
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Description
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Generates a VTK file of particle tracks for cases that were computed using
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a tracked-parcel-type cloud
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "Cloud.H"
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#include "IOdictionary.H"
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#include "fvMesh.H"
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#include "Time.H"
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#include "timeSelector.H"
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#include "OFstream.H"
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#include "passiveParticleCloud.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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timeSelector::addOptions();
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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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instantList timeDirs = timeSelector::select0(runTime, args);
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#include "createNamedMesh.H"
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#include "createFields.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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fileName vtkPath(runTime.path()/"VTK");
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mkDir(vtkPath);
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Info<< "Scanning times to determine track data for cloud " << cloudName
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<< nl << endl;
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labelList maxIds(Pstream::nProcs(), -1);
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forAll(timeDirs, timeI)
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{
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runTime.setTime(timeDirs[timeI], timeI);
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Info<< "Time = " << runTime.timeName() << endl;
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Info<< " Reading particle positions" << endl;
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passiveParticleCloud myCloud(mesh, cloudName);
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Info<< " Read " << returnReduce(myCloud.size(), sumOp<label>())
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<< " particles" << endl;
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forAllConstIter(passiveParticleCloud, myCloud, iter)
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{
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label origId = iter().origId();
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label origProc = iter().origProc();
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if (origProc >= maxIds.size())
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{
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// Expand size
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maxIds.setSize(origProc+1, -1);
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}
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maxIds[origProc] = max(maxIds[origProc], origId);
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}
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}
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label maxNProcs = returnReduce(maxIds.size(), maxOp<label>());
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Info<< "Detected particles originating from " << maxNProcs
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<< " processors." << nl << endl;
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maxIds.setSize(maxNProcs, -1);
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Pstream::listCombineGather(maxIds, maxEqOp<label>());
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Pstream::listCombineScatter(maxIds);
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labelList numIds = maxIds + 1;
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Info<< nl << "Particle statistics:" << endl;
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forAll(maxIds, procI)
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{
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Info<< " Found " << numIds[procI] << " particles originating"
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<< " from processor " << procI << endl;
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}
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Info<< nl << endl;
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// calc starting ids for particles on each processor
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List<label> startIds(numIds.size(), 0);
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for (label i = 0; i < numIds.size()-1; i++)
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{
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startIds[i+1] += startIds[i] + numIds[i];
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}
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label nParticle = startIds[startIds.size()-1] + numIds[startIds.size()-1];
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// number of tracks to generate
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label nTracks = nParticle/sampleFrequency;
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// storage for all particle tracks
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List<DynamicList<vector> > allTracks(nTracks);
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Info<< "\nGenerating " << nTracks << " particle tracks for cloud "
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<< cloudName << nl << endl;
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forAll(timeDirs, timeI)
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{
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runTime.setTime(timeDirs[timeI], timeI);
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Info<< "Time = " << runTime.timeName() << endl;
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List<pointField> allPositions(Pstream::nProcs());
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List<labelField> allOrigIds(Pstream::nProcs());
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List<labelField> allOrigProcs(Pstream::nProcs());
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// Read particles. Will be size 0 if no particles.
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Info<< " Reading particle positions" << endl;
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passiveParticleCloud myCloud(mesh, cloudName);
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// collect the track data on all processors that have positions
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allPositions[Pstream::myProcNo()].setSize
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(
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myCloud.size(),
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point::zero
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);
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allOrigIds[Pstream::myProcNo()].setSize(myCloud.size(), 0);
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allOrigProcs[Pstream::myProcNo()].setSize(myCloud.size(), 0);
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label i = 0;
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forAllConstIter(passiveParticleCloud, myCloud, iter)
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{
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allPositions[Pstream::myProcNo()][i] = iter().position();
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allOrigIds[Pstream::myProcNo()][i] = iter().origId();
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allOrigProcs[Pstream::myProcNo()][i] = iter().origProc();
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i++;
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}
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// collect the track data on the master processor
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Pstream::gatherList(allPositions);
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Pstream::gatherList(allOrigIds);
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Pstream::gatherList(allOrigProcs);
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Info<< " Constructing tracks" << nl << endl;
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if (Pstream::master())
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{
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forAll(allPositions, procI)
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{
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forAll(allPositions[procI], i)
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{
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label globalId =
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startIds[allOrigProcs[procI][i]]
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+ allOrigIds[procI][i];
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if (globalId % sampleFrequency == 0)
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{
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label trackId = globalId/sampleFrequency;
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if (allTracks[trackId].size() < maxPositions)
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{
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allTracks[trackId].append
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(
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allPositions[procI][i]
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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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}
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if (Pstream::master())
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{
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OFstream vtkTracks(vtkPath/"particleTracks.vtk");
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Info<< "\nWriting particle tracks to " << vtkTracks.name()
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<< nl << endl;
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// Total number of points in tracks + 1 per track
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label nPoints = 0;
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forAll(allTracks, trackI)
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{
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nPoints += allTracks[trackI].size();
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}
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vtkTracks
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<< "# vtk DataFile Version 2.0" << nl
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<< "particleTracks" << nl
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<< "ASCII" << nl
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<< "DATASET POLYDATA" << nl
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<< "POINTS " << nPoints << " float" << nl;
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// Write track points to file
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forAll(allTracks, trackI)
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{
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forAll(allTracks[trackI], i)
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{
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const vector& pt = allTracks[trackI][i];
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vtkTracks << pt.x() << ' ' << pt.y() << ' ' << pt.z() << nl;
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}
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}
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// write track (line) connectivity to file
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vtkTracks << "LINES " << nTracks << ' ' << nPoints+nTracks << nl;
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// Write ids of track points to file
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label globalPtI = 0;
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forAll(allTracks, trackI)
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{
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vtkTracks << allTracks[trackI].size();
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forAll(allTracks[trackI], i)
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{
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vtkTracks << ' ' << globalPtI;
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globalPtI++;
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}
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vtkTracks << nl;
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}
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Info<< "end" << endl;
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}
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return 0;
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}
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// ************************************************************************* //
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