/*---------------------------------------------------------------------------*\
  ==  == ====== ====   ====    |
                    \\     ||  | Multiphase Code Repository by HZDR
  ======   //   ||  || ===//   | Website: https://doi.org/10.14278/rodare.767
  ||  ||  //    ||  // || \\   | License: GPL-3.0-or-later
  ==  == ====== ====   ==  ==  |
-------------------------------------------------------------------------------
License
    This file is part of the Multiphase Code Repository by HZDR.

    Copyright (C) 2025 by Helmholtz-Zentrum Dresden-Rossendorf e.V. (HZDR),
    Website: https://hzdr.de

    Multiphase Code Repository by HZDR is based on the free software for
    computational fluid dynamics (CFD) from the OpenFOAM Foundation.
    Copyright (C) 2025 by OpenFOAM Foundation, Website: https://openfoam.org

    If you are interested in which files are original OpenFOAM Foundation
    files, which OpenFOAM Foundation files were modified, and which files were
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    Multiphase Code Repository by HZDR is free software: you can redistribute
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Class
    Foam::kineticTheoryModels::frictionalStressModel

SourceFiles
    frictionalStressModel.C

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

#ifndef frictionalStressModel_H
#define frictionalStressModel_H

#include "dictionary.H"
#include "volFields.H"
#include "dimensionedTypes.H"
#include "runTimeSelectionTables.H"
#include "phaseModel.H"

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

namespace Foam
{
namespace kineticTheoryModels
{

/*---------------------------------------------------------------------------*\
                    Class frictionalStressModel Declaration
\*---------------------------------------------------------------------------*/

class frictionalStressModel
{
    // Private member functions

        //- Read the coefficients from coeffDict
        virtual bool readCoeffs(const dictionary& coeffDict)
        {
            return true;
        }


public:

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

    // Declare runtime constructor selection table
    declareRunTimeSelectionTable
    (
        autoPtr,
        frictionalStressModel,
        dictionary,
        (
            const dictionary& dict
        ),
        (dict)
    );


    // Constructors

        //- Construct from the coefficients dictionary
        frictionalStressModel(const dictionary& coeffDict);

        //- Disallow default bitwise copy construction
        frictionalStressModel(const frictionalStressModel&) = delete;


    // Selectors

        static autoPtr<frictionalStressModel> New
        (
            const dictionary& dict
        );


    //- Destructor
    virtual ~frictionalStressModel();


    // Member Functions

        //- Read the coefficients from the optional ".*Coeffs" sub-dictionary
        //  of the given dictionary
        bool read(const dictionary& dict);

        virtual tmp<volScalarField> frictionalPressure
        (
            const phaseModel& phase,
            const dimensionedScalar& alphaMinFriction,
            const dimensionedScalar& alphaMax
        ) const = 0;

        virtual tmp<volScalarField> frictionalPressurePrime
        (
            const phaseModel& phase,
            const dimensionedScalar& alphaMinFriction,
            const dimensionedScalar& alphaMax
        ) const = 0;

        virtual tmp<volScalarField> nu
        (
            const phaseModel& phase,
            const dimensionedScalar& alphaMinFriction,
            const dimensionedScalar& alphaMax,
            const volScalarField& pf,
            const volSymmTensorField& D
        ) const = 0;


    // Member Operators

        //- Disallow default bitwise assignment
        void operator=(const frictionalStressModel&) = delete;
};


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

} // End namespace kineticTheoryModels
} // End namespace Foam

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

#endif

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