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    Copyright (C) 2019 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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    the Free Software Foundation, either version 3 of the License, or
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Class
    Foam::phaseChangeTwoPhaseMixtures::Merkle

Description
    Merkle cavitation model.

    Reference:
    \verbatim
        C. L. Merkle, J. Feng, and P. E. O. Buelow,
        "Computational modeling of the dynamics of sheet cavitation",
        in Proceedings Third International Symposium on Cavitation
        Grenoble, France 1998.
   \endverbatim

SourceFiles
    Merkle.C

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

#ifndef Merkle_H
#define Merkle_H

#include "phaseChangeTwoPhaseMixture.H"

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

namespace Foam
{
namespace phaseChangeTwoPhaseMixtures
{

/*--------------------------------------------------------------------*\
                              Class Merkle
\*--------------------------------------------------------------------*/

class Merkle
:
    public phaseChangeTwoPhaseMixture
{
    // Private data

        dimensionedScalar UInf_;
        dimensionedScalar tInf_;
        dimensionedScalar Cc_;
        dimensionedScalar Cv_;

        dimensionedScalar p0_;

        dimensionedScalar mcCoeff_;
        dimensionedScalar mvCoeff_;


public:

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


    // Constructors

        //- Construct from components
        Merkle
        (
            const volVectorField& U,
            const surfaceScalarField& phi
        );


    //- Destructor
    virtual ~Merkle() = default;


    // Member Functions

        //- Return the mass condensation and vaporisation rates as a
        //  coefficient to multiply (1 - alphal) for the condensation rate
        //  and a coefficient to multiply  alphal for the vaporisation rate
        virtual Pair<tmp<volScalarField>> mDotAlphal() const;

        //- Return the mass condensation and vaporisation rates as coefficients
        //  to multiply (p - pSat)
        virtual Pair<tmp<volScalarField>> mDotP() const;

        //- Correct the Merkle phaseChange model
        virtual void correct();

        //- Read the transportProperties dictionary and update
        virtual bool read();
};


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

} // End namespace phaseChangeTwoPhaseMixtures
} // End namespace Foam

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

#endif

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