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License
    This file is part of the Multiphase Code Repository by HZDR.

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    Website: https://hzdr.de

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Class
    Foam::dragModels::wallDampedDrag

Description
    Wall-damped drag model.
    Ongoing and unpublished work related to wall damping by Rzehak et al.

SourceFiles
    wallDampedDrag.C

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

#ifndef wallDampedDrag_H
#define wallDampedDrag_H

#include "dispersedDragModel.H"
#include "wallDampingModel.H"

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

namespace Foam
{

namespace dragModels
{

/*---------------------------------------------------------------------------*\
                       Class wallDampedDrag Declaration
\*---------------------------------------------------------------------------*/

class wallDampedDrag
:
    public dispersedDragModel
{
    // Private Data

        //- The drag model to damp
        autoPtr<dragModel> dragModel_;

        //- The wall-damping model
        autoPtr<wallDampingModel> wallDampingModel_;

        //- Artificial minimum value for Ki
        const dimensionedScalar Kmin_;


public:

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


    // Constructors

        //- Construct with residual constants
        wallDampedDrag
        (
            const dictionary& dict,
            const phaseInterface& interface,
            const bool registerObject
        );


    //- Destructor
    virtual ~wallDampedDrag();


    // Member Functions

        //- Return drag coefficient
        virtual tmp<volScalarField> CdRe() const;

        //- Return the phase-intensive drag coefficient Ki
        //  used in the momentum equations
        virtual tmp<volScalarField> Ki() const;

        //- Return the drag coefficient K
        //  used in the momentum equations
        virtual tmp<volScalarField> K() const;

        //- Return the drag coefficient Kf
        //  used in the face-momentum equations
        virtual tmp<surfaceScalarField> Kf() const;
};


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

} // End namespace dragModels
} // End namespace Foam

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

#endif

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