Gulder.C

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    Copyright (C) 2011-2016 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
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#include "Gulder.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace XiEqModels
{
    defineTypeNameAndDebug(Gulder, 0);
    addToRunTimeSelectionTable(XiEqModel, Gulder, dictionary);
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::XiEqModels::Gulder::Gulder
(
    const dictionary& XiEqProperties,
    const psiuReactionThermo& thermo,
    const compressible::RASModel& turbulence,
    const volScalarField& Su
)
:
    XiEqModel(XiEqProperties, thermo, turbulence, Su),
    XiEqCoef_(XiEqModelCoeffs_.get<scalar>("XiEqCoef")),
    SuMin_(0.01*Su.average()),
    uPrimeCoef_(XiEqModelCoeffs_.get<scalar>("uPrimeCoef")),
    subGridSchelkin_(XiEqModelCoeffs_.get<bool>("subGridSchelkin"))
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::XiEqModels::Gulder::~Gulder()
{}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
Foam::tmp<Foam::volScalarField> Foam::XiEqModels::Gulder::XiEq() const
{
    volScalarField up(sqrt((2.0/3.0)*turbulence_.k()));
    const volScalarField& epsilon = turbulence_.epsilon();
 
    if (subGridSchelkin_)
    {
        up.primitiveFieldRef() += calculateSchelkinEffect(uPrimeCoef_);
    }
 
    volScalarField tauEta(sqrt(mag(thermo_.muu()/(thermo_.rhou()*epsilon))));
 
    volScalarField Reta
    (
        up
      / (
            sqrt(epsilon*tauEta)
          + dimensionedScalar("1e-8", up.dimensions(), 1e-8)
        )
    );
 
    return (1.0 + XiEqCoef_*sqrt(up/(Su_ + SuMin_))*Reta);
}
 
 
bool Foam::XiEqModels::Gulder::read(const dictionary& XiEqProperties)
{
    XiEqModel::read(XiEqProperties);
 
    XiEqModelCoeffs_.readEntry("XiEqCoef", XiEqCoef_);
    XiEqModelCoeffs_.readEntry("uPrimeCoef", uPrimeCoef_);
    XiEqModelCoeffs_.readEntry("subGridSchelkin", subGridSchelkin_);
 
    return true;
}
 
 
// ************************************************************************* //