102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 4.0
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\\ / A nd | Web: http://www.foam-extend.org
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\\/ M anipulation | For copyright notice see file Copyright
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend 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 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "channelIndex.H"
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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template<class T>
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Foam::Field<T> Foam::channelIndex::regionSum(const Field<T>& cellField) const
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{
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Field<T> regionField(cellRegion_().nRegions(), pTraits<T>::zero);
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forAll(cellRegion_(), cellI)
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{
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regionField[cellRegion_()[cellI]] += cellField[cellI];
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}
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// Global sum
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Pstream::listCombineGather(regionField, plusEqOp<T>());
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Pstream::listCombineScatter(regionField);
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return regionField;
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}
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template<class T>
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Foam::Field<T> Foam::channelIndex::collapse
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(
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const Field<T>& cellField,
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const bool asymmetric
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) const
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{
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// Average and order
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const Field<T> summedField(regionSum(cellField));
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Field<T> regionField
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(
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summedField
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/ regionCount_,
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sortMap_
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);
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// Symmetry?
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if (symmetric_)
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{
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label nlb2 = cellRegion_().nRegions()/2;
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if (asymmetric)
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{
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for (label j=0; j<nlb2; j++)
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{
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regionField[j] =
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0.5
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* (
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regionField[j]
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- regionField[cellRegion_().nRegions() - j - 1]
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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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for (label j=0; j<nlb2; j++)
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{
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regionField[j] =
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0.5
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* (
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regionField[j]
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+ regionField[cellRegion_().nRegions() - j - 1]
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);
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}
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}
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regionField.setSize(nlb2);
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}
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return regionField;
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}
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// ************************************************************************* //
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