/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2014-2017 OpenFOAM Foundation
    Copyright (C) 2019 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.

Class
    Foam::RASModels::kOmegaSSTSato

Group
    grpRASTurbulence

Description
    Implementation of the k-omega-SST turbulence model for dispersed bubbly
    flows with Sato (1981) bubble induced turbulent viscosity model.

    Bubble induced turbulent viscosity model described in:
    \verbatim
        Sato, Y., Sadatomi, M.
        "Momentum and heat transfer in two-phase bubble flow - I, Theory"
        International Journal of Multiphase FLow 7, pp. 167-177, 1981.
    \endverbatim

    Turbulence model described in:
    \verbatim
        Menter, F., Esch, T.
        "Elements of Industrial Heat Transfer Prediction"
        16th Brazilian Congress of Mechanical Engineering (COBEM),
        Nov. 2001
    \endverbatim

    with the addition of the optional F3 term for rough walls from
    \verbatim
        Hellsten, A.
        "Some Improvements in Menter’s k-omega-SST turbulence model"
        29th AIAA Fluid Dynamics Conference,
        AIAA-98-2554,
        June 1998.
    \endverbatim

    Note that this implementation is written in terms of alpha diffusion
    coefficients rather than the more traditional sigma (alpha = 1/sigma) so
    that the blending can be applied to all coefficuients in a consistent
    manner.  The paper suggests that sigma is blended but this would not be
    consistent with the blending of the k-epsilon and k-omega models.

    Also note that the error in the last term of equation (2) relating to
    sigma has been corrected.

    Wall-functions are applied in this implementation by using equations (14)
    to specify the near-wall omega as appropriate.

    The blending functions (15) and (16) are not currently used because of the
    uncertainty in their origin, range of applicability and that as y+ becomes
    sufficiently small blending u_tau in this manner is clearly nonsense.

    The default model coefficients correspond to the following:
    \verbatim
        kOmegaSSTCoeffs
        {
            alphaK1     0.85034;
            alphaK2     1.0;
            alphaOmega1 0.5;
            alphaOmega2 0.85616;
            Prt         1.0;    // only for compressible
            beta1       0.075;
            beta2       0.0828;
            betaStar    0.09;
            gamma1      0.5532;
            gamma2      0.4403;
            a1          0.31;
            b1          1.0;
            c1          10.0;
            F3          no;
            Cmub        0.6;
        }
    \endverbatim

SourceFiles
    kOmegaSST.C

SourceFiles
    kOmegaSSTSato.C

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

#ifndef kOmegaSSTSato_H
#define kOmegaSSTSato_H

#include "kOmegaSST.H"

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

namespace Foam
{
namespace RASModels
{

/*---------------------------------------------------------------------------*\
                           Class kOmegaSSTSato Declaration
\*---------------------------------------------------------------------------*/

template<class BasicTurbulenceModel>
class kOmegaSSTSato
:
    public kOmegaSST<BasicTurbulenceModel>
{
    // Private data

        mutable const PhaseCompressibleTurbulenceModel
        <
            typename BasicTurbulenceModel::transportModel
        > *gasTurbulencePtr_;


    // Private Member Functions

        //- Return the turbulence model for the gas phase
        const PhaseCompressibleTurbulenceModel
        <
            typename BasicTurbulenceModel::transportModel
        >&
        gasTurbulence() const;


        //- No copy construct
        kOmegaSSTSato(const kOmegaSSTSato&) = delete;

        //- No copy assignment
        void operator=(const kOmegaSSTSato&) = delete;


protected:

    // Protected data

        // Model coefficients

            dimensionedScalar Cmub_;


    // Protected Member Functions

        virtual void correctNut(const volScalarField& S2);


public:

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


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


    // Constructors

        //- Construct from components
        kOmegaSSTSato
        (
            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 ~kOmegaSSTSato() = default;


    // Member Functions

        //- Read model coefficients if they have changed
        virtual bool read();

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


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

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

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

#ifdef NoRepository
    #include "kOmegaSSTSato.C"
#endif

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

#endif

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