171 lines
4.6 KiB
C
171 lines
4.6 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) 2011-2015 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 "basicXiSubXiEq.H"
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#include "zeroGradientFvPatchFields.H"
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#include "addToRunTimeSelectionTable.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace XiEqModels
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{
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defineTypeNameAndDebug(basicSubGrid, 0);
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addToRunTimeSelectionTable(XiEqModel, basicSubGrid, dictionary);
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}
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::XiEqModels::basicSubGrid::basicSubGrid
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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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XiEqModel(XiEqProperties, thermo, turbulence, Su),
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B_
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(
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IOobject
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(
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"B",
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Su.mesh().facesInstance(),
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Su.mesh(),
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IOobject::MUST_READ,
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IOobject::NO_WRITE
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),
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Su.mesh()
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),
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XiEqModel_(XiEqModel::New(XiEqModelCoeffs_, thermo, turbulence, Su))
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::XiEqModels::basicSubGrid::~basicSubGrid()
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{}
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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Foam::tmp<Foam::volScalarField> Foam::XiEqModels::basicSubGrid::XiEq() 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 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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volScalarField magU(mag(U));
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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 scalarField Cw = pow(mesh.V(), 2.0/3.0);
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tmp<volScalarField> tN
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(
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new volScalarField
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(
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IOobject
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(
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"tN",
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mesh.time().constant(),
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mesh,
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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mesh,
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dimensionedScalar("zero", Nv.dimensions(), 0.0),
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zeroGradientFvPatchVectorField::typeName
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)
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);
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volScalarField& N = tN();
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N.internalField() = Nv.internalField()*Cw;
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tmp<volSymmTensorField> tns
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(
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new volSymmTensorField
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(
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IOobject
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(
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"tns",
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U.mesh().time().timeName(),
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U.mesh(),
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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U.mesh(),
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dimensionedSymmTensor
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(
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"zero",
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nsv.dimensions(),
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pTraits<symmTensor>::zero
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),
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zeroGradientFvPatchSymmTensorField::typeName
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)
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);
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volSymmTensorField& ns = tns();
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ns.internalField() = nsv.internalField()*Cw;
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volScalarField n(max(N - (Uhat & ns & Uhat), scalar(1e-4)));
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volScalarField b((Uhat & B_ & Uhat)/sqrt(n));
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volScalarField up(sqrt((2.0/3.0)*turbulence_.k()));
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volScalarField XiSubEq
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(
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scalar(1)
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+ max(2.2*sqrt(b), min(0.34*magU/up*sqrt(b), scalar(1.6)))
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* min(n, scalar(1))
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);
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return (XiSubEq*XiEqModel_->XiEq());
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}
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bool Foam::XiEqModels::basicSubGrid::read(const dictionary& XiEqProperties)
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{
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XiEqModel::read(XiEqProperties);
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return XiEqModel_->read(XiEqModelCoeffs_);
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}
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// ************************************************************************* //
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