/*---------------------------------------------------------------------------*\
  ==  == ====== ====   ====    |
                    \\     ||  | 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
    newly created, see FILES.md.

    Multiphase Code Repository by HZDR 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.

    Multiphase Code Repository by HZDR is distributed in the hope that it will
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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Class
    Foam::surfaceTensionForceModel

Description
    Base class for modeling the surface tension force flux.

SourceFiles
    surfaceTensionForceModel.C
    surfaceTensionForceModelNew.C
    resolvedInterfaceSystem.C

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

#ifndef surfaceTensionForceModel_H
#define surfaceTensionForceModel_H

#include "volFields.H"
#include "dictionary.H"
#include "segregatedPhaseInterface.H"
#include "runTimeSelectionTables.H"
#include "resolvedInterfaceSystem.H"

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

namespace Foam
{

class phaseModel;

/*---------------------------------------------------------------------------*\
                  Class surfaceTensionForceModel Declaration
\*---------------------------------------------------------------------------*/

class surfaceTensionForceModel
:
    public regIOobject
{
protected:

    // Protected Data

        //- Reference to the resolvedInterfaceSystem
        const resolvedInterfaceSystem& resolvedInterface_;


public:

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


    // Declare runtime construction

        declareRunTimeSelectionTable
        (
            autoPtr,
            surfaceTensionForceModel,
            dictionary,
            (
                const resolvedInterfaceSystem& resolvedInterface,
                const bool registerObject
            ),
            (resolvedInterface, registerObject)
        );


    // Constructors

        //- Construct from resolvedInterfaceSystem
        surfaceTensionForceModel
        (
            const resolvedInterfaceSystem& resolvedInterface,
            const bool registerObject
        );


    //- Destructor
    virtual ~surfaceTensionForceModel();


    // Selectors

        static autoPtr<surfaceTensionForceModel> New
        (
            const resolvedInterfaceSystem& resolvedInterface,
            const bool registerObject=true
        );


    // Member Functions

        //- Return the curvature of this interface
        virtual tmp<volScalarField> K
        (
            const segregatedPhaseInterface& interface
        ) const = 0;

        //- Surface tension force flux
        virtual tmp<surfaceScalarField> surfaceTensionForcef
        (
            const segregatedPhaseInterface& interface
        ) const;

        //- Dummy write for regIOobject
        bool writeData(Ostream& os) const;
};


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

} // End namespace Foam

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

#endif

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