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#include "scaleSimilarity.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{
namespace LESModels
{

// * * * * * * * * * * * * Protected Member Functions* * * * * * * * * * * * //

template<class BasicMomentumTransportModel>
tmp<volSymmTensorField> scaleSimilarity<BasicMomentumTransportModel>::B
(
    const rhoField& rho,
    const volVectorField& U
) const
{
    volSymmTensorField B
    (
        filter_(this->alpha_*rho*sqr(U))
      - filterWrapper(this->alpha_)*(filterWrapper(rho)*sqr(filter_(U)))
    );

    return pos(mag(B) - threshold_)*B;
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

template<class BasicMomentumTransportModel>
scaleSimilarity<BasicMomentumTransportModel>::scaleSimilarity
(
    const alphaField& alpha,
    const rhoField& rho,
    const volVectorField& U,
    const surfaceScalarField& alphaRhoPhi,
    const surfaceScalarField& phi,
    const viscosity& viscosity,
    const word& type
)
:
    structuralModel<BasicMomentumTransportModel>
    (
        alpha,
        rho,
        U,
        alphaRhoPhi,
        phi,
        viscosity,
        type
    ),

    filterPtr_(LESfilter::New(U.mesh(), this->coeffDict())),
    filter_(filterPtr_()),

    threshold_
    (
        "threshold",
        dimensionSet(1, -1, -2, 0, 0),
        this->coeffDict(),
        Zero
    )
{}


template<class BasicMomentumTransportModel>
scaleSimilarity<BasicMomentumTransportModel>::scaleSimilarity
(
    const word& type,
    const alphaField& alpha,
    const rhoField& rho,
    const volVectorField& U,
    const surfaceScalarField& alphaRhoPhi,
    const surfaceScalarField& phi,
    const viscosity& viscosity
)
:
    structuralModel<BasicMomentumTransportModel>
    (
        type,
        alpha,
        rho,
        U,
        alphaRhoPhi,
        phi,
        viscosity
    ),

    filterPtr_(LESfilter::New(U.mesh(), this->coeffDict())),
    filter_(filterPtr_()),

    threshold_
    (
        "threshold",
        dimensionSet(1, -1, -2, 0, 0),
        this->coeffDict(),
        Zero
    )
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class BasicMomentumTransportModel>
bool scaleSimilarity<BasicMomentumTransportModel>::read()
{
    if (structuralModel<BasicMomentumTransportModel>::read())
    {
        filter_.read(this->coeffDict());

        return true;
    }
    else
    {
        return false;
    }
}


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace LESModels
} // End namespace Foam

// ************************************************************************* //
