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   \\    /   O peration     | Version:     3.2
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License
    This file is part of foam-extend.

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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.

    foam-extend is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or 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
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Class
    Foam::phaseChangeTwoPhaseMixtures::SchnerrSauer

Description
    SchnerrSauer cavitation model.

    Reference:
    @verbatim
        Schnerr, G. H., And Sauer, J.,
        "Physical and Numerical Modeling of Unsteady Cavitation Dynamics",
        Proc. 4th International Conference on Multiphase Flow,
        New Orleans, U.S.A., 2001.
    @verbatim

SourceFiles
    SchnerrSauer.C

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

#ifndef SchnerrSauer_H
#define SchnerrSauer_H

#include "phaseChangeTwoPhaseMixture.H"

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

namespace Foam
{
namespace phaseChangeTwoPhaseMixtures
{

/*--------------------------------------------------------------------*\
                              Class SchnerrSauer
\*--------------------------------------------------------------------*/

class SchnerrSauer
:
    public phaseChangeTwoPhaseMixture
{
    // Private data

        //- Bubble number density
        dimensionedScalar n_;

        //- Nucleation site diameter
        dimensionedScalar dNuc_;

        //- Condensation rate coefficient
        dimensionedScalar Cc_;

        //- Vapourisation rate coefficient
        dimensionedScalar Cv_;

        dimensionedScalar p0_;

        //- Nucleation site volume-fraction
        dimensionedScalar alphaNuc() const;

        //- Reciprocal bubble radius
        tmp<volScalarField>rRb(const volScalarField& limitedAlpha1) const;

        //- Part of the condensation and vapourisation rates
        tmp<volScalarField> pCoeff(const volScalarField& p) const;


public:

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


    // Constructors

        //- construct from components
        SchnerrSauer
        (
            const volVectorField& U,
            const surfaceScalarField& phi,
            const word& alpha1Name = "alpha1"
        );


    // Destructor

        virtual ~SchnerrSauer()
        {}


    // 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 an
        //  explicit term for the condensation rate and a coefficient to
        //  multiply (p - pSat) for the vaporisation rate
        virtual Pair<tmp<volScalarField> > mDotP() const;

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

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


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

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

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

#endif

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