/*---------------------------------------------------------------------------*\
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   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
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    Copyright (C) 2011 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM 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.

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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.

Class
    Foam::dragModels::GidaspowErgunWenYu

Description
    D. Gidaspow, Multiphase flow and fluidization,
        Academic Press, New York, 1994.

SourceFiles
    GidaspowErgunWenYu.C

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

#ifndef GidaspowErgunWenYu_H
#define GidaspowErgunWenYu_H

#include "dragModel.H"

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

namespace Foam
{
namespace dragModels
{

/*---------------------------------------------------------------------------*\
                           Class GidaspowErgunWenYu Declaration
\*---------------------------------------------------------------------------*/

class GidaspowErgunWenYu
:
    public dragModel
{

public:

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


    // Constructors

        //- Construct from components
        GidaspowErgunWenYu
        (
            const dictionary& interfaceDict,
            const phaseModel& phase1,
            const phaseModel& phase2
        );


    //- Destructor
    virtual ~GidaspowErgunWenYu();


    // Member Functions

        tmp<volScalarField> K(const volScalarField& Ur) const;
};


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

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

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

#endif

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