ArrheniusViscosity.H

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/*---------------------------------------------------------------------------*\
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License
    This file is part of OpenFOAM.
 
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Class
    Foam::ArrheniusViscosity
 
Description
    The Arrhenius temperature-dependent viscosity model multiplies the viscosity
    of a base model by an Arrhenius-type temperature function:
 
        mu = mu0*exp(k1*(1/(T + k2) - 1/(Tref + k2)))
 
    Where:
        mu0 is the base-model viscosity
        k1 and k2 are Arrhenius coefficients
        T is the local temperature
        Tref is the reference temperature
 
SourceFiles
    ArrheniusViscosity.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef ArrheniusViscosity_H
#define ArrheniusViscosity_H
 
#include "filmViscosityModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace regionModels
{
namespace surfaceFilmModels
{
 
/*---------------------------------------------------------------------------*\
                    Class ArrheniusViscosity Declaration
\*---------------------------------------------------------------------------*/
 
class ArrheniusViscosity
:
    public filmViscosityModel
{
    // Private member functions
 
        //- Disallow default bitwise copy construct
        ArrheniusViscosity(const ArrheniusViscosity&);
 
        //- Disallow default bitwise assignment
        void operator=(const ArrheniusViscosity&);
 
 
protected:
 
    // Protected data
 
        //- Base viscosity model
        autoPtr<filmViscosityModel> viscosity_;
 
        //- Coefficient k1
        dimensionedScalar k1_;
 
        //- Coefficient k2
        dimensionedScalar k2_;
 
        //- Reference temperature
        dimensionedScalar Tref_;
 
 
public:
 
    //- Runtime type information
    TypeName("Arrhenius");
 
 
    // Constructors
 
        //- Construct from surface film model
        ArrheniusViscosity
        (
            surfaceFilmModel& owner,
            const dictionary& dict,
            volScalarField& mu
        );
 
 
    //- Destructor
    virtual ~ArrheniusViscosity();
 
 
    // Member Functions
 
        //- Correct
        virtual void correct
        (
            const volScalarField& p,
            const volScalarField& T
        );
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace surfaceFilmModels
} // End namespace regionModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //