Casson.H

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License
    This file is part of OpenFOAM.
 
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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
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Class
    Foam::laminarModels::generalisedNewtonianViscosityModels::Casson
 
Description
    Casson generalised Newtonian viscosity model
 
    References:
    \verbatim
        Casson, N. (1959).
        Rheology of disperse systems.
        In Proceedings of a Conference Organised by the
        British Society of Rheology.
        Pergamon Press, New York.
 
        Fournier, R. L. (2011).
        Basic transport phenomena in biomedical engineering.
        CRC Press.
    \endverbatim
 
    Example specification for blood:
    \verbatim
         viscosityModel Casson;
 
         m       3.934986e-6;
         tau0    2.9032e-6;
         nuMax   13.3333e-6;
         nuMin   3.9047e-6;
    \endverbatim
 
SourceFiles
    Casson.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Casson_H
#define Casson_H
 
#include "strainRateViscosityModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace laminarModels
{
namespace generalisedNewtonianViscosityModels
{
 
/*---------------------------------------------------------------------------*\
                           Class Casson Declaration
\*---------------------------------------------------------------------------*/
 
class Casson
:
    public strainRateViscosityModel
{
    // Private Data
 
        dimensionedScalar m_;
        dimensionedScalar tau0_;
        dimensionedScalar nuMin_;
        dimensionedScalar nuMax_;
 
 
public:
 
    //- Runtime type information
    TypeName("Casson");
 
 
    // Constructors
 
        //- Construct from components
        Casson
        (
            const dictionary& viscosityProperties,
            const Foam::viscosity& viscosity,
            const volVectorField& U
        );
 
 
    //- Destructor
    virtual ~Casson()
    {}
 
 
    // Member Functions
 
        //- Read transportProperties dictionary
        virtual bool read(const dictionary& viscosityProperties);
 
        //- Return the laminar viscosity
        virtual tmp<volScalarField> nu
        (
            const volScalarField& nu0,
            const volScalarField& strainRate
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace generalisedNewtonianViscosityModels
} // End namespace laminarModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //