WALE.C

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    \\  /    A nd           | Copyright (C) 2015 OpenFOAM Foundation
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    for more details.
 
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#include "WALE.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace LESModels
{
 
// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
 
template<class BasicTurbulenceModel>
tmp<volSymmTensorField> WALE<BasicTurbulenceModel>::Sd
(
    const volTensorField& gradU
) const
{
    return dev(symm(gradU & gradU));
}
 
 
template<class BasicTurbulenceModel>
tmp<volScalarField> WALE<BasicTurbulenceModel>::k
(
    const volTensorField& gradU
) const
{
    volScalarField magSqrSd(magSqr(Sd(gradU)));
 
    return tmp<volScalarField>
    (
        new volScalarField
        (
            IOobject
            (
                IOobject::groupName("k", this->U_.group()),
                this->runTime_.timeName(),
                this->mesh_
            ),
            sqr(sqr(Cw_)*this->delta()/Ck_)*
            (
                pow3(magSqrSd)
               /(
                   sqr
                   (
                       pow(magSqr(symm(gradU)), 5.0/2.0)
                     + pow(magSqrSd, 5.0/4.0)
                   )
                 + dimensionedScalar
                   (
                       "SMALL",
                       dimensionSet(0, 0, -10, 0, 0),
                       SMALL
                   )
               )
            )
        )
    );
}
 
 
template<class BasicTurbulenceModel>
void WALE<BasicTurbulenceModel>::correctNut()
{
    this->nut_ = Ck_*this->delta()*sqrt(this->k(fvc::grad(this->U_)));
    this->nut_.correctBoundaryConditions();
 
    BasicTurbulenceModel::correctNut();
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<class BasicTurbulenceModel>
WALE<BasicTurbulenceModel>::WALE
(
    const alphaField& alpha,
    const rhoField& rho,
    const volVectorField& U,
    const surfaceScalarField& alphaRhoPhi,
    const surfaceScalarField& phi,
    const transportModel& transport,
    const word& propertiesName,
    const word& type
)
:
    LESeddyViscosity<BasicTurbulenceModel>
    (
        type,
        alpha,
        rho,
        U,
        alphaRhoPhi,
        phi,
        transport,
        propertiesName
    ),
 
    Ck_
    (
        dimensioned<scalar>::lookupOrAddToDict
        (
            "Ck",
            this->coeffDict_,
            0.094
        )
    ),
 
    Cw_
    (
        dimensioned<scalar>::lookupOrAddToDict
        (
            "Cw",
            this->coeffDict_,
            0.325
        )
    )
{
    if (type == typeName)
    {
        this->printCoeffs(type);
    }
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class BasicTurbulenceModel>
bool WALE<BasicTurbulenceModel>::read()
{
    if (LESeddyViscosity<BasicTurbulenceModel>::read())
    {
        Ck_.readIfPresent(this->coeffDict());
        Cw_.readIfPresent(this->coeffDict());
 
        return true;
    }
    else
    {
        return false;
    }
}
 
 
template<class BasicTurbulenceModel>
tmp<volScalarField> WALE<BasicTurbulenceModel>::epsilon() const
{
    volScalarField k(this->k(fvc::grad(this->U_)));
 
    return tmp<volScalarField>
    (
        new volScalarField
        (
            IOobject
            (
                IOobject::groupName("epsilon", this->U_.group()),
                this->runTime_.timeName(),
                this->mesh_,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            this->Ce_*k*sqrt(k)/this->delta()
        )
    );
}
 
 
template<class BasicTurbulenceModel>
void WALE<BasicTurbulenceModel>::correct()
{
    LESeddyViscosity<BasicTurbulenceModel>::correct();
    correctNut();
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace LESModels
} // End namespace Foam
 
// ************************************************************************* //