velocityGroup.H

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License
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Class
    Foam::diameterModels::velocityGroup
 
Description
    Computes the Sauter mean diameter based on a user specified size
    distribution, defined in terms of size class fractions. Intended for use
    with a population balance model to account for the evolution of a size
    distribution by means of coalescence, breakup, drift and nucleation.
 
Usage
    Excerpt from an exemplary phaseProperties dictionary:
    \verbatim
    diameterModel   velocityGroup;
 
    velocityGroupCoeffs
    {
        populationBalance    bubbles;
 
        shapeModel           spherical;
 
        sizeGroups
        (
            f1 {dSph  1e-3; value 1.0;}
            f2 {dSph  2e-3; value 0.0;}
            f3 {dSph  3e-3; value 0.0;}
            f4 {dSph  4e-3; value 0.0;}
            f5 {dSph  5e-3; value 0.0;}
            ...
        );
    }
    \endverbatim
 
See also
    Foam::diameterModels::sizeGroup
    Foam::diameterModels::populationBalanceModel
 
SourceFiles
    velocityGroup.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef velocityGroup_H
#define velocityGroup_H
 
#include "diameterModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace diameterModels
{
 
// Forward declaration of classes
class sizeGroup;
 
/*---------------------------------------------------------------------------*\
                        Class velocityGroup Declaration
\*---------------------------------------------------------------------------*/
 
class velocityGroup
:
    public diameterModel
{
    // Private Data
 
        //- Name of the populationBalance this velocityGroup belongs to
        word popBalName_;
 
        //- Sum of the sizeGroup volume fractions and reference field from which
        //  the sizeGroup fields are derived
        volScalarField f_;
 
        //- sizeGroups belonging to this velocityGroup
        PtrList<sizeGroup> sizeGroups_;
 
        //- Sauter-mean diameter of the phase
        volScalarField d_;
 
 
    // Private Member Functions
 
        tmp<volScalarField> dsm() const;
 
        tmp<volScalarField> fSum() const;
 
        tmp<volScalarField> N() const;
 
        void scale();
 
 
public:
 
    //- Runtime type information
    TypeName("velocityGroup");
 
 
    // Constructors
 
        //- Construct from dictionary and phase
        velocityGroup
        (
            const dictionary& diameterProperties,
            const phaseModel& phase
        );
 
 
    //- Destructor
    virtual ~velocityGroup();
 
 
    // Member Functions
 
        //- Return name of populationBalance this velocityGroup belongs to
        inline const word& popBalName() const;
 
        //- Return reference field for sizeGroup's
        inline const volScalarField& f() const;
 
        //- Return sizeGroups belonging to this velocityGroup
        inline const PtrList<sizeGroup>& sizeGroups() const;
 
        //- Get the diameter field
        virtual tmp<volScalarField> d() const;
 
        //- Get the surface area per unit volume field
        virtual tmp<volScalarField> Av() const;
 
        //- Correct the model
        virtual void correct();
 
        //- Read diameterProperties dictionary
        virtual bool read(const dictionary& diameterProperties);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace diameterModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "velocityGroupI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //