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    Copyright (C) 2016-2018 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.

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    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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Class
    Foam::wallBoilingModels::partitioningModels::cosine

Description
    Cosine wall heat flux partitioning model.

    Proposed threshold liquid fractions:
      - alphaLiquid1 0.1
      - alphaLiquid0 0.05

    \verbatim
        Tentner, A., Lo, S., & Kozlov, V. (2006).
        Advances in computational fluid dynamics modeling
        of two-phase flow in boiling water reactor fuel assemblies.
        In International Conference of Nuclear Engineering,
        Miami, Florida, USA.
    \endverbatim

SourceFiles
    cosine.C

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

#ifndef cosine_H
#define cosine_H

#include "partitioningModel.H"

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

namespace Foam
{
namespace wallBoilingModels
{
namespace partitioningModels
{

/*---------------------------------------------------------------------------*\
                         Class cosine Declaration
\*---------------------------------------------------------------------------*/

class cosine
:
    public partitioningModel
{
    // Private data

        // Model parameters, threshold liquid phase fractions
        scalar alphaLiquid1_;
        scalar alphaLiquid0_;


public:

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


    // Constructors

        //- Construct from a dictionary
        cosine(const dictionary& dict);


    //- Destructor
    virtual ~cosine();


    // Member Functions

        //- Calculate and return the wall heat-flux partitioning
        virtual tmp<scalarField> fLiquid(const scalarField& alphaLiquid) const;

        virtual void write(Ostream& os) const;
};


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

} // End namespace partitioningModels
} // End namespace wallBoilingModels
} // End namespace Foam

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

#endif

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