143 lines
4.0 KiB
C
143 lines
4.0 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 | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2011-2017 OpenFOAM Foundation
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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 "XiEqModel.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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defineTypeNameAndDebug(XiEqModel, 0);
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defineRunTimeSelectionTable(XiEqModel, dictionary);
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::XiEqModel::XiEqModel
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(
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const dictionary& XiEqProperties,
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const psiuReactionThermo& thermo,
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const compressible::RASModel& turbulence,
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const volScalarField& Su
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)
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:
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XiEqModelCoeffs_
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(
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XiEqProperties.subDict
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(
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XiEqProperties.get<word>("XiEqModel") + "Coeffs"
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)
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),
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thermo_(thermo),
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turbulence_(turbulence),
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Su_(Su)
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::XiEqModel::~XiEqModel()
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{}
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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bool Foam::XiEqModel::read(const dictionary& XiEqProperties)
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{
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XiEqModelCoeffs_ = XiEqProperties.optionalSubDict(type() + "Coeffs");
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return true;
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}
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void Foam::XiEqModel::writeFields() const
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{
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//***HGW It is not clear why B is written here
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const auto* B = Su_.mesh().cfindObject<volSymmTensorField>("B");
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if (B)
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{
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B->write();
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}
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}
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Foam::tmp<Foam::volScalarField>
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Foam::XiEqModel::calculateSchelkinEffect(const scalar uPrimeCoef) const
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{
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const fvMesh& mesh = Su_.mesh();
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const volVectorField& U = mesh.lookupObject<volVectorField>("U");
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const volSymmTensorField& CT = mesh.lookupObject<volSymmTensorField>("CT");
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const volScalarField& Nv = mesh.lookupObject<volScalarField>("Nv");
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const volSymmTensorField& nsv =
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mesh.lookupObject<volSymmTensorField>("nsv");
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auto tN = volScalarField::New
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(
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"tN",
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IOobject::NO_REGISTER,
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mesh,
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dimensionedScalar(Nv.dimensions(), Zero)
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);
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auto& N = tN.ref();
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N.primitiveFieldRef() = Nv.primitiveField()*pow(mesh.V(), 2.0/3.0);
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auto tns = volSymmTensorField::New
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(
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"tns",
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IOobject::NO_REGISTER,
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mesh,
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dimensionedSymmTensor(nsv.dimensions(), Zero)
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);
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auto& ns = tns.ref();
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ns.primitiveFieldRef() = nsv.primitiveField()*pow(mesh.V(), 2.0/3.0);
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const volVectorField Uhat
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(
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U/(mag(U) + dimensionedScalar("Usmall", U.dimensions(), 1e-4))
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);
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const volScalarField nr(sqrt(max(N - (Uhat & ns & Uhat), scalar(1e-4))));
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const scalarField cellWidth(pow(mesh.V(), 1.0/3.0));
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const scalarField upLocal(uPrimeCoef*sqrt((U & CT & U)*cellWidth));
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const scalarField deltaUp(upLocal*(max(scalar(1), pow(nr, 0.5)) - 1.0));
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// Re use tN
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N.primitiveFieldRef() = upLocal*(max(scalar(1), pow(nr, 0.5)) - 1.0);
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return tN;
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}
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// ************************************************************************* //
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