kOmega.H

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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
 
Description
    Standard high Reynolds-number k-omega turbulence model for
    incompressible and compressible flows.
 
    References:
    \verbatim
        Wilcox, D. C. (1998).
        Turbulence modeling for CFD
        (Vol. 2, pp. 103-217). La Canada, CA: DCW industries.
    \endverbatim
 
    The default model coefficients are
    \verbatim
        kOmegaCoeffs
        {
            betaStar    0.09;
            gamma       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 BasicMomentumTransportModel>
class kOmega
:
    public eddyViscosity<RASModel<BasicMomentumTransportModel>>
{
 
protected:
 
    // Protected data
 
        // Model coefficients
 
            dimensionedScalar betaStar_;
            dimensionedScalar beta_;
            dimensionedScalar gamma_;
            dimensionedScalar alphaK_;
            dimensionedScalar alphaOmega_;
 
 
        // Fields
 
            volScalarField k_;
            volScalarField omega_;
 
 
    // Protected Member Functions
 
        //- Bound omega
        void boundOmega();
 
        //- Correct the eddy-viscosity nut
        virtual void correctNut();
 
        //- Source term for the k equation
        virtual tmp<fvScalarMatrix> kSource() const;
 
        //- Source term for the omega equation
        virtual tmp<fvScalarMatrix> omegaSource() const;
 
 
public:
 
    typedef typename BasicMomentumTransportModel::alphaField alphaField;
    typedef typename BasicMomentumTransportModel::rhoField rhoField;
 
 
    //- 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 viscosity& viscosity,
            const word& type = typeName
        );
 
 
    //- Destructor
    virtual ~kOmega()
    {}
 
 
    // Member Functions
 
        //- Read RASProperties dictionary
        virtual bool read();
 
        //- Return the effective diffusivity for k
        tmp<volScalarField> DkEff() const
        {
            return volScalarField::New
            (
                "DkEff",
                alphaK_*this->nut_ + this->nu()
            );
        }
 
        //- Return the effective diffusivity for omega
        tmp<volScalarField> DomegaEff() const
        {
            return volScalarField::New
            (
                "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_;
        }
 
        //- Return the turbulence kinetic energy dissipation rate
        virtual tmp<volScalarField> epsilon() const
        {
            return volScalarField::New
            (
                "epsilon",
                betaStar_*k_*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
 
// ************************************************************************* //