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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2023-2026 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 "nearestCellsToCellsExtrapolation.H"
#include "globalIndex.H"
#include "wallPoint.H"
#include "WallLocationData.H"
#include "WallInfo.H"
#include "FaceCellWave.H"
#include "distributionMap.H"
#include "OBJstream.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace cellsToCellsExtrapolations
{
defineTypeNameAndDebug(nearest, 0);
addToRunTimeSelectionTable(cellsToCellsExtrapolation, nearest, word);
}
}
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
template<class Type>
void Foam::cellsToCellsExtrapolations::nearest::extrapolateType
(
Field<Type>& fld
) const
{
if (!extrapolation_) return;
// Communicate remote field values as necessary
tmp<Field<Type>> srcFld;
if (Pstream::parRun())
{
srcFld = fld.clone();
extrapolationMapPtr_->distribute(srcFld.ref());
}
else
{
srcFld = tmp<Field<Type>>(fld);
}
// Set the values in the uncoupled cells
forAll(uncoupledCells_, uncoupledCelli)
{
const label celli = uncoupledCells_[uncoupledCelli];
fld[celli] = srcFld()[uncoupledCellLocalCells_[uncoupledCelli]];
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::cellsToCellsExtrapolations::nearest::nearest()
:
cellsToCellsExtrapolation(),
uncoupledCellLocalCells_(),
extrapolationMapPtr_(nullptr)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::cellsToCellsExtrapolations::nearest::~nearest()
{}
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
void Foam::cellsToCellsExtrapolations::nearest::update
(
const polyMesh& mesh,
const PackedBoolList& cellCoupleds
)
{
cellsToCellsExtrapolation::update(cellCoupleds);
// Quick return if nothing is to be done
if (!extrapolation_) return;
// Global cell addressing
const globalIndex globalCellIndex(mesh.nCells());
// Get the list of faces which separate regions which do and do not need
// extrapolation. For each face, also get the global index of the adjacent
// cell which is coupled.
labelList cutFaces, cutFacesCoupledCells;
getCutFaces
(
mesh,
cellCoupleds,
globalCellIndex,
cutFaces,
cutFacesCoupledCells
);
// Wave the information about the cut faces' connected coupled cells into
// the un-coupled cells. Base this wave on distance to the cut face.
// Initialise coupled cells to have a distance of zero, so that we do not
// waste time waving into coupled regions of the mesh.
typedef WallInfo<WallLocationData<wallPoint, label>> info;
List<info> cutFaceInfos(cutFaces.size());
forAll(cutFaces, cutFacei)
{
cutFaceInfos[cutFacei] =
info
(
cutFacesCoupledCells[cutFacei],
mesh.faceCentres()[cutFaces[cutFacei]],
0
);
}
List<info> faceInfos(mesh.nFaces()), cellInfos(mesh.nCells());
forAll(cellCoupleds, celli)
{
if (cellCoupleds[celli])
{
cellInfos[celli] =
info
(
globalCellIndex.toGlobal(celli),
mesh.cellCentres()[celli],
0
);
}
}
FaceCellWave<info> wave
(
mesh,
cutFaces,
cutFaceInfos,
faceInfos,
cellInfos,
mesh.globalData().nTotalCells() + 1 // max iterations
);
// Check that the wave connected to all un-coupled cells
forAll(uncoupledCells_, uncoupledCelli)
{
const label celli = uncoupledCells_[uncoupledCelli];
if (!cellInfos[celli].valid(wave.data()))
{
FatalErrorInFunction
<< "Un-coupled cell " << celli << " of mesh " << mesh.name()
<< " on processor " << Pstream::myProcNo() << " with centre "
<< "at " << mesh.cellCentres()[celli] << " was not connected "
<< "to a coupled cell by the extrapolation wave. This "
<< "indicates that an entire non-contiguous region of mesh "
<< "lies outside of the other mesh being mapped to. This is "
<< "not recoverable." << exit(FatalError);
}
}
// Construct the cell to local extrapolation cell map
uncoupledCellLocalCells_.resize(uncoupledCells_.size());
forAll(uncoupledCells_, uncoupledCelli)
{
const label celli = uncoupledCells_[uncoupledCelli];
uncoupledCellLocalCells_[uncoupledCelli] = cellInfos[celli].data();
}
// Construct the distribution map, if necessary
if (Pstream::parRun())
{
List<Map<label>> compactMap;
extrapolationMapPtr_.reset
(
new distributionMap
(
globalCellIndex,
uncoupledCellLocalCells_,
compactMap
)
);
}
// Write out connections
if (debug)
{
OBJstream obj
(
typeName + "_" + mesh.name()
+ (Pstream::parRun() ? "_proc" + name(Pstream::myProcNo()) : "")
+ "_connections.obj"
);
pointField ccs(mesh.cellCentres());
extrapolate(ccs);
forAll(ccs, celli)
{
const point& c = mesh.cellCentres()[celli];
if (magSqr(c - ccs[celli]) == 0) continue;
obj.write(linePointRef(ccs[celli], c));
}
}
}
#define implementExtrapolateType(Type, nullArg) \
void Foam::cellsToCellsExtrapolations::nearest::extrapolate \
( \
Field<Type>& fld \
) const \
{ \
extrapolateType(fld); \
}
FOR_ALL_FIELD_TYPES(implementExtrapolateType);
#undef implementExtrapolateType
// ************************************************************************* //
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