Merkle.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::compressible::cavitationModels::Merkle
 
Description
    Merkle cavitation model.
 
    Reference:
    \verbatim
        Markle, C. L. (1998).
        Computational modeling of the dynamics of sheet cavitation.
        In Proc. 3rd International Symposium on Cavitation
        (Vol. 2, pp. 307-311).
   \endverbatim
 
Usage:
    \table
        Property | Description                     | Required | Default value
        liquid   | Name of the liquid phase             | yes      |
        pSat     | Saturation vapor pressure            | yes      |
        Uinf     | Free-stream velocity                 | yes      |
        tInf     | Vaporisation/condensation time scale | yes      |
        Cv       | Vapourisation rate coefficient       | yes      |
        Cc       | Condensation rate coefficient        | yes      |
    \endtable
 
    Example:
    \verbatim
        model       Merkle;
 
        liquid      liquid;
 
        pSat        2300;
 
        UInf        20;
        tInf        0.005;  // L = 0.1 m
        Cv          1e-3;
        Cc          80;
    \endverbatim
 
SourceFiles
    Merkle.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Merkle_H
#define Merkle_H
 
#include "cavitationModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace compressible
{
namespace cavitationModels
{
 
/*---------------------------------------------------------------------------*\
                                 Class Merkle
\*---------------------------------------------------------------------------*/
 
class Merkle
:
    public cavitationModel
{
    // Private Data
 
        //- Free-stream velocity
        dimensionedScalar UInf_;
 
        //- Vaporisation/condensation time scale
        dimensionedScalar tInf_;
 
        //- Vaporisation rate coefficient
        dimensionedScalar Cv_;
 
        //- Condensation rate coefficient
        dimensionedScalar Cc_;
 
        //- Zero with pressure dimensions
        dimensionedScalar p0_;
 
        dimensionedScalar mcCoeff_;
 
 
    // Private Member functions
 
        tmp<volScalarField::Internal> mvCoeff() const;
 
 
public:
 
    //- Runtime type information
    TypeName("Merkle");
 
 
    // Constructors
 
        //- Construct for phases
        Merkle
        (
            const dictionary& dict,
            const compressibleTwoPhases& phases
        );
 
 
    //- Destructor
    virtual ~Merkle()
    {}
 
 
    // Member Functions
 
        //- Return the mass condensation and vaporisation rates as a
        //  coefficient to multiply alphav for the condensation rate and a
        //  coefficient to multiply alphal for the vaporisation rate
        virtual Pair<tmp<volScalarField::Internal>> mDotcvAlphal() const;
 
        //- Return the mass condensation and vaporisation rates as coefficients
        //  to multiply (p - pSat)
        virtual Pair<tmp<volScalarField::Internal>> mDotcvP() const;
 
        //- Correct the Merkle phaseChange model
        virtual void correct();
 
        //- Read the dictionary and update
        virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace cavitationModels
} // End namespace compressible
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //