MichaelsBolger.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::relativeVelocityModels::MichaelsBolger
 
Description
    Michaels & Bolger relative velocity model
 
    Reference:
    \verbatim
        Michaels, A. S., & Bolger, J. C. (1962).
        Settling rates and sediment volumes
        of flocculated kaolin suspensions.
        Industrial & Engineering Chemistry Fundamentals, 1(1), 24-33.
    \endverbatim
 
Usage
    Example usage:
    \verbatim
        relativeVelocityModel MichaelsBolger;
 
        MichaelsBolgerCoeffs
        {
            a0          0;    // Extended Michaels & Bolger coefficient,
            a1          4.65; // Exponent
        }
    \endverbatim
 
SourceFiles
    MichaelsBolger.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef MichaelsBolger_H
#define MichaelsBolger_H
 
#include "relativeVelocityModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace relativeVelocityModels
{
 
/*---------------------------------------------------------------------------*\
                           Class MichaelsBolger Declaration
\*---------------------------------------------------------------------------*/
 
class MichaelsBolger
:
    public relativeVelocityModel
{
    // Private Data
 
        //- Extended Michaels & Bolger coefficient, defaults to 0
        dimensionedScalar a0_;
 
        //- Exponent, defaults to 4.65
        dimensionedScalar a1_;
 
        //- Drift velocity coefficient
        dimensionedScalar Vc_;
 
 
public:
 
    //- Runtime type information
    TypeName("MichaelsBolger");
 
 
    // Constructors
 
        //- Construct from components
        MichaelsBolger
        (
            const dictionary& dict,
            const incompressibleDriftFluxMixture& mixture,
            const uniformDimensionedVectorField& g
        );
 
 
    //- Destructor
    ~MichaelsBolger();
 
 
    // Member Functions
 
        //- Return the diffusion velocity coefficient
        //  Udm = UdmCoeff*acceleration
        virtual tmp<volScalarField> UdmCoeff() const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace relativeVelocityModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //