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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2026 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "mapClouds.H"
#include "fvMeshToFvMesh.H"
#include "IOobjectList.H"
#include "OSspecific.H"
#include "passiveParticleCloud.H"
#include "patchToPatchTools.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
template<class Type>
List<Type> gatherAndFlatten(const List<Type>& l)
{
List<List<Type>> procLs(Pstream::nProcs());
procLs[Pstream::myProcNo()] = l;
Pstream::gatherList(procLs);
Pstream::scatterList(procLs);
return
HashSet<Type>
(
ListListOps::combine<List<Type>>
(
procLs,
accessOp()
)
).sortedToc();
}
template<class ReadIOField, class WriteIOField>
void mapCloudTypeFields
(
const fileName& cloudDir,
const IOobjectList& objects,
const polyMesh& srcMesh,
const polyMesh& tgtMesh,
const distributionMap& map
)
{
const wordList fieldNames =
gatherAndFlatten(objects.lookupClass(ReadIOField::typeName).names());
forAll(fieldNames, fieldi)
{
const word& fieldName = fieldNames[fieldi];
Info<< " mapping lagrangian field " << fieldName << endl;
const IOobject* fieldIOPtr = objects.lookup(fieldName);
// Read the field
ReadIOField field
(
fieldIOPtr != nullptr
? *fieldIOPtr
: IOobject
(
fieldName,
srcMesh.time().name(),
lagrangian::cloud::prefix/cloudDir,
srcMesh,
IOobject::NO_READ,
IOobject::NO_WRITE,
false
)
);
// Distribute the field
map.distribute(field);
// Write it out into the target case
if (field.size())
{
WriteIOField
(
IOobject
(
fieldName,
tgtMesh.time().name(),
lagrangian::cloud::prefix/cloudDir,
tgtMesh,
IOobject::NO_READ,
IOobject::NO_WRITE,
false
),
move(field)
).write();
}
}
}
template<class Type>
void mapCloudTypeFieldsAndFieldFields
(
const fileName& cloudDir,
const IOobjectList& objects,
const polyMesh& srcMesh,
const polyMesh& tgtMesh,
const distributionMap& map
)
{
mapCloudTypeFields
<
IOField<Type>,
IOField<Type>
>
(
cloudDir,
objects,
srcMesh,
tgtMesh,
map
);
mapCloudTypeFields
<
IOField<Field<Type>>,
CompactIOField<Field<Type>>
>
(
cloudDir,
objects,
srcMesh,
tgtMesh,
map
);
mapCloudTypeFields
<
CompactIOField<Field<Type>>,
CompactIOField<Field<Type>>
>
(
cloudDir,
objects,
srcMesh,
tgtMesh,
map
);
}
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
void Foam::mapClouds(const fvMeshToFvMesh& interp)
{
const polyMesh& srcMesh = interp.srcMesh();
const polyMesh& tgtMesh = interp.tgtMesh();
const meshSearch& tgtSearchEngine = meshSearch::New(tgtMesh);
word baseDir(srcMesh.time().timePath());
if (srcMesh.name() != fvMesh::defaultRegion)
{
baseDir = baseDir/srcMesh.name();
}
// Determine the clouds present in this mesh
const fileNameList cloudDirs =
gatherAndFlatten
(
readDir
(
baseDir/lagrangian::cloud::prefix,
fileType::directory
)
);
forAll(cloudDirs, cloudi)
{
Info<< nl << "Mapping cloud " << cloudDirs[cloudi] << endl;
// Read the source cloud positions
passiveParticleCloud srcCloud(srcMesh, cloudDirs[cloudi], false);
Info<< " read "
<< returnReduce(srcCloud.size(), sumOp())
<< " parcels from source mesh." << endl;
// Unpack into position and cell lists and construct a send map
pointField positions(srcCloud.size());
labelList tgtCells(srcCloud.size(), -1);
List<DynamicList<label>> sendsDyn(Pstream::nProcs());
{
label srcParticlei = 0;
forAllConstIter(lagrangian::Cloud<passiveParticle>, srcCloud, iter)
{
const point pos = iter().position(srcMesh);
const remote tgtProcCell =
interp.srcToTgtPoint(iter().cell(), pos);
positions[srcParticlei] = pos;
tgtCells[srcParticlei] = tgtProcCell.elementi;
sendsDyn[tgtProcCell.proci].append(srcParticlei ++);
}
}
labelListList sends;
patchToPatchTools::transferListList(sends, sendsDyn);
// Build a distribution map from the send map
autoPtr<distributionMap> mapPtr =
patchToPatchTools::constructDistributionMap(sends);
const distributionMap& map = mapPtr();
// Distribute the positions and target cell indices
map.distribute(positions);
map.distribute(tgtCells);
// Construct the target cloud positions
passiveParticleCloud tgtCloud
(
tgtMesh,
cloudDirs[cloudi],
IDLList<passiveParticle>()
);
forAll(positions, tgtParticlei)
{
label nLocateBoundaryHits = 0;
autoPtr<passiveParticle> pPtr
(
new passiveParticle
(
tgtSearchEngine,
positions[tgtParticlei],
tgtCells[tgtParticlei],
nLocateBoundaryHits
)
);
if (nLocateBoundaryHits == 0)
{
tgtCloud.addParticle(pPtr.ptr());
}
}
Info<< " mapped "
<< returnReduce(tgtCloud.size(), sumOp())
<< " parcels to the target mesh." << endl;
// Write the positions
IOPosition<passiveParticleCloud>(tgtCloud).write();
// Search for Lagrangian objects for this time
IOobjectList objects
(
srcMesh,
srcMesh.time().name(),
lagrangian::cloud::prefix/cloudDirs[cloudi]
);
// Map and write the fields
#define MapCloudTypeFields(Type, nullArg) \
mapCloudTypeFieldsAndFieldFields<Type> \
( \
cloudDirs[cloudi], \
objects, \
srcMesh, \
tgtMesh, \
map \
);
MapCloudTypeFields(label, );
FOR_ALL_FIELD_TYPES(MapCloudTypeFields);
#undef MapCloudTypeFields
}
}
// ************************************************************************* //
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