126 lines
3.6 KiB
C++
126 lines
3.6 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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Application
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blockCoupledScalarTransportFoam
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Description
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Solves two coupled transport equations in a block-coupled manner
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1) transport equation for a passive scalar
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2) diffusion only
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This resembles heat exchanging flow through a porous medium
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "fieldTypes.H"
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#include "foamTime.H"
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#include "fvMesh.H"
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#include "fvBlockMatrix.H"
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#include "simpleControl.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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# include "setRootCase.H"
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# include "createTime.H"
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# include "createMesh.H"
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simpleControl simple(mesh);
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# include "createFields.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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Info<< "\nCalculating scalar transport\n" << endl;
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# include "CourantNo.H"
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while (simple.loop())
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{
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Info<< "Time = " << runTime.timeName() << nl << endl;
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while (simple.correctNonOrthogonal())
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{
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fvScalarMatrix TEqn
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(
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fvm::div(phi, T)
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- fvm::laplacian(DT, T)
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==
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alpha*Ts
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- fvm::Sp(alpha, T)
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);
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TEqn.relax();
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fvScalarMatrix TsEqn
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(
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- fvm::laplacian(DTs, Ts)
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==
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alpha*T
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- fvm::Sp(alpha, Ts)
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);
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TsEqn.relax();
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// Prepare block system
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fvBlockMatrix<vector2> blockM(blockT);
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// Insert equations into block Matrix
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blockM.insertEquation(0, TEqn);
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blockM.insertEquation(1, TsEqn);
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// Add off-diagonal coupling terms
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scalarField coupling(mesh.nCells(), -alpha.value());
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blockM.insertEquationCoupling(0, 1, coupling);
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blockM.insertEquationCoupling(1, 0, coupling);
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// Update source coupling: coupling terms eliminated from source
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blockM.updateSourceCoupling();
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//- Block coupled solver call
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blockM.solve();
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// Retrieve solution
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blockM.retrieveSolution(0, T.internalField());
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blockM.retrieveSolution(1, Ts.internalField());
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T.correctBoundaryConditions();
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Ts.correctBoundaryConditions();
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}
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runTime.write();
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}
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Info<< "End\n" << endl;
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return(0);
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}
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// ************************************************************************* //
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