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

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    computational fluid dynamics (CFD) from the OpenFOAM Foundation.
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Class
    Foam::wallLubricationModel

Description
    Model for the wall lubrication force between two phases

SourceFiles
    wallLubricationModel.C
    wallLubricationModelNew.C

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

#ifndef wallLubricationModel_H
#define wallLubricationModel_H

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

#include "wallDependentModel.H"
#include "volFields.H"
#include "dictionary.H"
#include "runTimeSelectionTables.H"
#include "BlendedInterfacialModel.H"

namespace Foam
{

/*---------------------------------------------------------------------------*\
                    Class wallLubricationModel Declaration
\*---------------------------------------------------------------------------*/

class wallLubricationModel
:
    public wallDependentModel
{
protected:

    // Protected member functions

        //- Zero-gradient wall-lubrication force at walls
        tmp<volVectorField> zeroGradWalls(tmp<volVectorField>) const;


public:

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


    // Declare runtime construction

        declareRunTimeSelectionTable
        (
            autoPtr,
            wallLubricationModel,
            dictionary,
            (
                const dictionary& dict,
                const phaseInterface& interface
            ),
            (dict, interface)
        );


    // Static Data Members

        //- Coefficient dimensions
        static const dimensionSet dimF;


    // Constructors

        //- Construct from a dictionary and an interface
        wallLubricationModel
        (
            const dictionary& dict,
            const phaseInterface& interface
        );


    //- Destructor
    virtual ~wallLubricationModel();


    // Selectors

        static autoPtr<wallLubricationModel> New
        (
            const dictionary& dict,
            const phaseInterface& interface,
            const bool outer=true
        );


    // Member Functions

        //- Return wall lubrication force
        virtual tmp<volVectorField> F() const = 0;

        //- Return face wall lubrication force
        virtual tmp<surfaceScalarField> Ff() const = 0;
};


/*---------------------------------------------------------------------------*\
                   Class blendedWallLubricationModel Declaration
\*---------------------------------------------------------------------------*/

class blendedWallLubricationModel
:
    public BlendedInterfacialModel<wallLubricationModel>
{
public:

    // Constructors

        //- Inherit base class constructors
        using
            BlendedInterfacialModel<wallLubricationModel>::
            BlendedInterfacialModel;


    // Selectors

        inline static autoPtr<blendedWallLubricationModel> New
        (
            const dictionary& dict,
            const phaseInterface& interface,
            const dictionary& blendingDict
        )
        {
            return
                autoPtr<blendedWallLubricationModel>
                (
                    new blendedWallLubricationModel
                    (
                        dict,
                        interface,
                        blendingDict
                    )
                );
        }


    // Member Functions

        //- Return wall lubrication force
        tmp<volVectorField> F() const;

        //- Return face wall lubrication force
        tmp<surfaceScalarField> Ff() const;
};


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

} // End namespace Foam

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

#endif

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