homogeneousCondensation.H

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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::fv::homogeneousCondensation
 
Description
    Model for the homogeneous nucleation of liquid droplets out of a gaseous
    mixture
 
Usage
    Example usage:
    \verbatim
    homogeneousCondensation
    {
        type            homogeneousCondensation;
        libs            ("libmultiphaseEulerFvModels.so");
 
        // Phases between which the transfer occurs. The first phase is the
        // gas, and the second is the condensed liquid.
        phases          (gas water);
 
        // The specie that is condensing
        specie          H2O;
 
        // Linearise the latent heat contribution into the energy equation?
        energySemiImplicit no;
 
        // Saturation curve for the specie in the gaseous phase
        pSat            ArdenBuck;
    }
    \endverbatim
 
SourceFiles
    homogeneousCondensation.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef homogeneousCondensation_H
#define homogeneousCondensation_H
 
#include "singleComponentPhaseChange.H"
#include "nucleation.H"
#include "dispersedPhaseInterface.H"
#include "saturationPressureModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace fv
{
 
/*---------------------------------------------------------------------------*\
                   Class homogeneousCondensation Declaration
\*---------------------------------------------------------------------------*/
 
class homogeneousCondensation
:
    public singleComponentPhaseChange,
    public nucleation
{
private:
 
    // Private Data
 
        //- Phase system
        const phaseSystem& fluid_;
 
        //- Interface
        const dispersedPhaseInterface interface_;
 
        //- Diameter of nucleated clusters
        volScalarField::Internal d_;
 
        //- Phase change rate, per unit volume of the gas
        volScalarField::Internal mDotByAlphaGas_;
 
        //- Saturation pressure model
        autoPtr<saturationPressureModel> saturationModel_;
 
 
    // Private Member Functions
 
        //- Non-virtual read
        void readCoeffs();
 
 
public:
 
    //- Runtime type information
    TypeName("homogeneousCondensation");
 
 
    // Constructors
 
        //- Construct from explicit source name and mesh
        homogeneousCondensation
        (
            const word& name,
            const word& modelType,
            const fvMesh& mesh,
            const dictionary& dict
        );
 
 
    // Member Functions
 
        // Sources
 
            //- Return the diameter of nuclei
            virtual tmp<DimensionedField<scalar, volMesh>> d() const;
 
            //- Return the number rate at which nuclei are generated
            virtual tmp<DimensionedField<scalar, volMesh>> nDot() const;
 
            //- Return the mass transfer rate
            virtual tmp<DimensionedField<scalar, volMesh>> mDot() const;
 
            //- Override the compressible continuity equation to add
            //  linearisation w.r.t alpha
            void addSup
            (
                const volScalarField& alpha,
                const volScalarField& rho,
                fvMatrix<scalar>& eqn
            ) const;
 
            //- Override the compressible mass fraction equation to add
            //  linearisation w.r.t the mass fraction
            void addSup
            (
                const volScalarField& alpha,
                const volScalarField& rho,
                const volScalarField& Yi,
                fvMatrix<scalar>& eqn
            ) const;
 
 
        //- Correct the fvModel
        //  e.g. solve equations, update model, for film, Lagrangian etc.
        virtual void correct();
 
 
        // IO
 
            //- Read source dictionary
            virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //