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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 "nearestPatchToPatchExtrapolation.H"
#include "distributionMap.H"
#include "PatchEdgeFacePointData.H"
#include "PatchEdgeFaceWave.H"
#include "SubField.H"
#include "globalIndex.H"
#include "OBJstream.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace patchToPatchExtrapolations
{
defineTypeNameAndDebug(nearest, 0);
addToRunTimeSelectionTable(patchToPatchExtrapolation, nearest, word);
}
}
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
template<class Type>
void Foam::patchToPatchExtrapolations::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 faces
forAll(uncoupledFaces_, uncoupledFacei)
{
const label celli = uncoupledFaces_[uncoupledFacei];
fld[celli] = srcFld()[uncoupledFaceLocalFaces_[uncoupledFacei]];
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::patchToPatchExtrapolations::nearest::nearest()
:
patchToPatchExtrapolation(),
uncoupledFaceLocalFaces_(),
extrapolationMapPtr_(nullptr)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::patchToPatchExtrapolations::nearest::~nearest()
{}
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
void Foam::patchToPatchExtrapolations::nearest::update
(
const polyPatch& patch,
const PackedBoolList& faceCoupleds
)
{
patchToPatchExtrapolation::update(faceCoupleds);
// Quick return if nothing is to be done
if (!extrapolation_) return;
// Global patch-face addressing
const globalIndex globalPatchFaceIndex(patch.size());
// Construct initial edges. All edges that border a coupled face are added
// here. The wave will propagate everywhere for just the first iteration.
// Then most paths will end and subsequent iterations will propagate only
// through the uncoupled faces. This is a bit odd, but it is easier than
// doing the necessary synchronisation to determine which edges lie
// in-between coupled and non-coupled faces.
typedef PatchEdgeFacePointData<label> info;
DynamicList<label> initialEdges(patch.nEdges());
DynamicList<info> initialEdgeInfos(patch.nEdges());
forAll(patch.edgeFaces(), edgei)
{
forAll(patch.edgeFaces()[edgei], edgeFacei)
{
const label facei = patch.edgeFaces()[edgei][edgeFacei];
if (faceCoupleds[facei])
{
initialEdges.append(edgei);
initialEdgeInfos.append
(
info
(
globalPatchFaceIndex.toGlobal(facei),
patch.edges()[edgei].centre(patch.localPoints()),
0
)
);
break;
}
}
}
// Wave the information about the nearby coupled faces into the un-coupled
// faces. Base this wave on distance to the cut face. Initialise coupled
// faces to have a distance of zero, so that we do not waste time waving
// into coupled regions of the patch.
List<info> edgeInfos(patch.nEdges()), faceInfos(patch.size());
forAll(faceCoupleds, facei)
{
if (faceCoupleds[facei])
{
faceInfos[facei] =
info
(
globalPatchFaceIndex.toGlobal(facei),
patch.faceCentres()[facei],
0
);
}
}
PatchEdgeFaceWave<primitivePatch, info> wave
(
patch.mesh(),
patch,
initialEdges,
initialEdgeInfos,
edgeInfos,
faceInfos,
returnReduce(patch.nEdges(), sumOp())
);
// Check that the wave connected to all un-mapped faces
forAll(faceCoupleds, facei)
{
if (!faceCoupleds[facei] && !faceInfos[facei].valid(wave.data()))
{
FatalErrorInFunction
<< "Un-mapped face " << facei << " of patch " << patch.name()
<< " on processor " << Pstream::myProcNo() << " with centre "
<< "at " << patch.faceCentres()[facei] << " was not connected "
<< "to a mapped cell by the extrapolation wave. This "
<< "indicates that an entire non-contiguous region of patch "
<< "lies outside of the other patch being mapped to. This is "
<< "not recoverable." << exit(FatalError);
}
}
// Construct the cell to local extrapolation cell map
uncoupledFaceLocalFaces_.resize(uncoupledFaces_.size());
forAll(uncoupledFaces_, uncoupledFacei)
{
const label facei = uncoupledFaces_[uncoupledFacei];
uncoupledFaceLocalFaces_[uncoupledFacei] = faceInfos[facei].data();
}
// Construct the distribution map, if necessary
if (Pstream::parRun())
{
List<Map<label>> compactMap;
extrapolationMapPtr_.reset
(
new distributionMap
(
globalPatchFaceIndex,
uncoupledFaceLocalFaces_,
compactMap
)
);
}
// Write out connections
if (debug)
{
OBJstream obj
(
typeName + "_" + patch.name()
+ (Pstream::parRun() ? "_proc" + name(Pstream::myProcNo()) : "")
+ "_connections.obj"
);
const pointField fcs(patch.faceCentres());
pointField sfcs(fcs);
extrapolate(sfcs);
forAll(fcs, celli)
{
const point& c = fcs[celli];
if (magSqr(c - fcs[celli]) == 0) continue;
obj.write(linePointRef(fcs[celli], c));
}
}
}
#define implementExtrapolateType(Type, nullArg) \
void Foam::patchToPatchExtrapolations::nearest::extrapolate \
( \
Field<Type>& fld \
) const \
{ \
extrapolateType(fld); \
}
FOR_ALL_FIELD_TYPES(implementExtrapolateType);
#undef implementExtrapolateType
// ************************************************************************* //
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