/*---------------------------------------------------------------------------*\
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                    \\     ||  | 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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Class
    Foam::dragModels::GidaspowSchillerNaumann

Description
    Gidaspow, Schiller and Naumann drag model

    References:
    \verbatim
        Enwald, H., Peirano, E., & Almstedt, A. E. (1996).
        Eulerian two-phase flow theory applied to fluidisation.
        International Journal of Multiphase Flow, 22, 21-66.

        This is identical to the Wen and Yu, Rowe model Table 3.6 p.56  in
        van Wachem, B. G. M. (2000).
        Derivation, implementation, and validation of computer simulation models
        for gas-solid fluidised beds.
        PhD Thesis, TU Delft.
    \endverbatim

SourceFiles
    GidaspowSchillerNaumann.C

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

#ifndef GidaspowSchillerNaumann_H
#define GidaspowSchillerNaumann_H

#include "dispersedDragModel.H"

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

namespace Foam
{
namespace dragModels
{

/*---------------------------------------------------------------------------*\
                   Class GidaspowSchillerNaumann Declaration
\*---------------------------------------------------------------------------*/

class GidaspowSchillerNaumann
:
    public dispersedDragModel
{

public:

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


    // Constructors

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


    //- Destructor
    virtual ~GidaspowSchillerNaumann();


    // Member Functions

        //- Drag coefficient
        virtual tmp<volScalarField> CdRe() const;
};


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

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

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

#endif

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