kOmega.H

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    Copyright (C) 2019-2023 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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    the Free Software Foundation, either version 3 of the License, or
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Class
    Foam::RASModels::kOmega

Group
    grpRASTurbulence

Description
    Standard high Reynolds-number k-omega turbulence model for
    incompressible and compressible flows.

    References:
    \verbatim
        Wilcox, D. C. (1988).
        Reassessment of the scale-determining
        equation for advanced turbulence models.
        AIAA Journal, 26(11), 1299-1310.
        DOI:10.2514/3.10041
    \endverbatim

    The default model coefficients are
    \verbatim
        kOmegaCoeffs
        {
            Cmu         0.09;  // Equivalent to betaStar
            alpha       0.52;
            beta        0.072;
            alphak      0.5;
            alphaOmega  0.5;
        }
    \endverbatim

SourceFiles
    kOmega.C

\*---------------------------------------------------------------------------*/

#ifndef kOmega_H
#define kOmega_H

#include "RASModel.H"
#include "eddyViscosity.H"

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

namespace Foam
{
namespace RASModels
{

/*---------------------------------------------------------------------------*\
                           Class kOmega Declaration
\*---------------------------------------------------------------------------*/

template<class BasicTurbulenceModel>
class kOmega
:
    public eddyViscosity<RASModel<BasicTurbulenceModel>>
{

protected:

    // Protected data

        // Model coefficients

            dimensionedScalar Cmu_;
            dimensionedScalar beta_;
            dimensionedScalar gamma_;
            dimensionedScalar alphaK_;
            dimensionedScalar alphaOmega_;


        // Fields

            volScalarField k_;
            volScalarField omega_;


    // Protected Member Functions

        virtual void correctNut();


public:

    typedef typename BasicTurbulenceModel::alphaField alphaField;
    typedef typename BasicTurbulenceModel::rhoField rhoField;
    typedef typename BasicTurbulenceModel::transportModel transportModel;


    //- Runtime type information
    TypeName("kOmega");


    // Constructors

        //- Construct from components
        kOmega
        (
            const alphaField& alpha,
            const rhoField& rho,
            const volVectorField& U,
            const surfaceScalarField& alphaRhoPhi,
            const surfaceScalarField& phi,
            const transportModel& transport,
            const word& propertiesName = turbulenceModel::propertiesName,
            const word& type = typeName
        );


    //- Destructor
    virtual ~kOmega() = default;


    // Member Functions

        //- Read RASProperties dictionary
        virtual bool read();

        //- Return the effective diffusivity for k
        tmp<volScalarField> DkEff() const
        {
            return tmp<volScalarField>
            (
                new volScalarField
                (
                    "DkEff",
                    alphaK_*this->nut_ + this->nu()
                )
            );
        }

        //- Return the effective diffusivity for omega
        tmp<volScalarField> DomegaEff() const
        {
            return tmp<volScalarField>
            (
                new volScalarField
                (
                    "DomegaEff",
                    alphaOmega_*this->nut_ + this->nu()
                )
            );
        }

        //- Return the turbulence kinetic energy
        virtual tmp<volScalarField> k() const
        {
            return k_;
        }

        //- Return the turbulence specific dissipation rate
        virtual tmp<volScalarField> omega() const
        {
            return omega_;
        }

        //- Solve the turbulence equations and correct the turbulence viscosity
        virtual void correct();
};


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

} // End namespace RASModels
} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#ifdef NoRepository
    #include "kOmega.C"
#endif

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

#endif

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