WALE.H

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    Copyright (C) 2015-2016 OpenFOAM Foundation
    Copyright (C) 2019-2021 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
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Class
    Foam::LESModels::WALE
 
Group
    grpLESTurbulence
 
Description
    The Wall-adapting local eddy-viscosity (WALE) SGS model.
 
    Reference:
    \verbatim
        Nicoud, F., & Ducros, F. (1999).
        Subgrid-scale stress modelling based on the square of the velocity
        gradient tensor.
        Flow, Turbulence and Combustion, 62(3), 183-200.
    \endverbatim
 
    The default model coefficients are
    \verbatim
        WALECoeffs
        {
            Ck                  0.094;
            Ce                  1.048;e
            Cw                  0.325;
        }
    \endverbatim
 
See also
    Foam::LESModels::Smagorinsky
 
SourceFiles
    WALE.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef WALE_H
#define WALE_H
 
#include "LESModel.H"
#include "LESeddyViscosity.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace LESModels
{
 
/*---------------------------------------------------------------------------*\
                           Class WALE Declaration
\*---------------------------------------------------------------------------*/
 
template<class BasicTurbulenceModel>
class WALE
:
    public LESeddyViscosity<BasicTurbulenceModel>
{
    // Private Member Functions
 
        //- No copy construct
        WALE(const WALE&) = delete;
 
        //- No copy assignment
        void operator=(const WALE&) = delete;
 
 
protected:
 
    // Protected data
 
        dimensionedScalar Ck_;
        dimensionedScalar Cw_;
 
 
    // Protected Member Functions
 
        //- Return the deviatoric symmetric part of the square of the given
        //  velocity gradient field
        tmp<volSymmTensorField> Sd(const volTensorField& gradU) const;
 
        //- Return SGS kinetic energy
        //  calculated from the given velocity gradient
        tmp<volScalarField> k(const volTensorField& gradU) const;
 
        //- Update the SGS eddy-viscosity
        virtual void correctNut();
 
 
public:
 
    typedef typename BasicTurbulenceModel::alphaField alphaField;
    typedef typename BasicTurbulenceModel::rhoField rhoField;
    typedef typename BasicTurbulenceModel::transportModel transportModel;
 
 
    //- Runtime type information
    TypeName("WALE");
 
 
    // Constructors
 
        //- Construct from components
        WALE
        (
            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 ~WALE() = default;
 
 
    // Member Functions
 
        //- Read model coefficients if they have changed
        virtual bool read();
 
        //- Return SGS kinetic energy
        virtual tmp<volScalarField> k() const
        {
            return k(fvc::grad(this->U_));
        }
 
        //- Correct Eddy-Viscosity and related properties
        virtual void correct();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace LESModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "WALE.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //