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158 lines
4.1 KiB
C
158 lines
4.1 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2015 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM 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
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "advectionDiffusionPatchDistMethod.H"
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#include "surfaceInterpolate.H"
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#include "fvcGrad.H"
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#include "fvcDiv.H"
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#include "fvmDiv.H"
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#include "fvmLaplacian.H"
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#include "fvmSup.H"
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#include "addToRunTimeSelectionTable.H"
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#include "fixedValueFvPatchFields.H"
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#include "zeroGradientFvPatchFields.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace patchDistMethods
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{
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defineTypeNameAndDebug(advectionDiffusion, 0);
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addToRunTimeSelectionTable(patchDistMethod, advectionDiffusion, dictionary);
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}
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::patchDistMethods::advectionDiffusion::advectionDiffusion
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(
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const dictionary& dict,
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const fvMesh& mesh,
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const labelHashSet& patchIDs
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)
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:
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patchDistMethod(mesh, patchIDs),
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coeffs_(dict.subDict(type() + "Coeffs")),
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pdmPredictor_
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(
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patchDistMethod::New
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(
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coeffs_,
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mesh,
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patchIDs
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)
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),
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epsilon_(coeffs_.lookupOrDefault<scalar>("epsilon", 0.1)),
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tolerance_(coeffs_.lookupOrDefault<scalar>("tolerance", 1e-3)),
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maxIter_(coeffs_.lookupOrDefault<int>("maxIter", 10)),
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predicted_(false)
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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bool Foam::patchDistMethods::advectionDiffusion::correct(volScalarField& y)
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{
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return correct(y, const_cast<volVectorField&>(volVectorField::null()));
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}
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bool Foam::patchDistMethods::advectionDiffusion::correct
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(
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volScalarField& y,
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volVectorField& n
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)
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{
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if (!predicted_)
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{
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pdmPredictor_->correct(y);
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predicted_ = true;
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}
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volVectorField ny
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(
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IOobject
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(
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"ny",
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mesh_.time().timeName(),
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mesh_,
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IOobject::NO_READ,
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IOobject::NO_WRITE,
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false
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),
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mesh_,
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dimensionedVector("ny", dimless, vector::zero),
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patchTypes<vector>(mesh_, patchIDs_)
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);
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const fvPatchList& patches = mesh_.boundary();
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forAllConstIter(labelHashSet, patchIDs_, iter)
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{
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label patchi = iter.key();
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ny.boundaryField()[patchi] == -patches[patchi].nf();
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}
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int iter = 0;
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scalar initialResidual = 0;
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do
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{
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ny = fvc::grad(y);
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ny /= (mag(ny) + SMALL);
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surfaceVectorField nf(fvc::interpolate(ny));
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nf /= (mag(nf) + SMALL);
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surfaceScalarField yPhi("yPhi", mesh_.Sf() & nf);
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fvScalarMatrix yEqn
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(
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fvm::div(yPhi, y)
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- fvm::Sp(fvc::div(yPhi), y)
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- epsilon_*y*fvm::laplacian(y)
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==
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dimensionedScalar("1", dimless, 1.0)
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);
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yEqn.relax();
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initialResidual = yEqn.solve().initialResidual();
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} while (initialResidual > tolerance_ && ++iter < maxIter_);
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// Only calculate n if the field is defined
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if (notNull(n))
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{
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n = -ny;
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}
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return true;
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}
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// ************************************************************************* //
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