GenEddyVisc.H

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Class
    Foam::incompressible::LESModels::GenEddyVisc

Description
    General base class for all incompressible models that can be implemented
    as an eddy viscosity, i.e. algebraic and one-equation models.

    Contains fields for k (SGS turbulent kinetic energy), gamma
    (modelled viscosity) and epsilon (SGS dissipation).

SourceFiles
    GenEddyVisc.C

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

#ifndef GenEddyVisc_H
#define GenEddyVisc_H

#include <incompressibleLESModels/LESModel.H>

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

namespace Foam
{
namespace incompressible
{
namespace LESModels
{

/*---------------------------------------------------------------------------*\
                           Class GenEddyVisc Declaration
\*---------------------------------------------------------------------------*/

class GenEddyVisc
:
    virtual public LESModel
{
    // Private Member Functions

        // Disallow default bitwise copy construct and assignment
        GenEddyVisc(const GenEddyVisc&);
        GenEddyVisc& operator=(const GenEddyVisc&);


protected:

        dimensionedScalar ce_;

        volScalarField nuSgs_;


public:

    // Constructors

        //- Construct from components
        GenEddyVisc
        (
            const volVectorField& U,
            const surfaceScalarField& phi,
            transportModel& transport
        );


    //- Destructor
    virtual ~GenEddyVisc()
    {}


    // Member Functions

        //- Return SGS kinetic energy
        virtual tmp<volScalarField> k() const = 0;

        //- Return sub-grid disipation rate
        virtual tmp<volScalarField> epsilon() const
        {
            return ce_*k()*sqrt(k())/delta();
        }

        //- Return the SGS viscosity.
        virtual tmp<volScalarField> nuSgs() const
        {
            return nuSgs_;
        }

        //- Return the sub-grid stress tensor.
        virtual tmp<volSymmTensorField> B() const;

        //- Return the effective sub-grid turbulence stress tensor
        //  including the laminar stress
        virtual tmp<volSymmTensorField> devBeff() const;

        //- Return the deviatoric part of the effective sub-grid
        //  turbulence stress tensor including the laminar stress
        virtual tmp<fvVectorMatrix> divDevBeff(volVectorField& U) const;

        //- Correct Eddy-Viscosity and related properties
        virtual void correct(const tmp<volTensorField>& gradU);

        //- Read LESProperties dictionary
        virtual bool read();
};


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

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

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

#endif

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