powerLaw.H

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    Copyright (C) 2017-2019 OpenCFD Ltd.
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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::viscosityModels::powerLaw
 
Description
     Standard power-law non-Newtonian viscosity model.
 
SourceFiles
    powerLaw.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef viscosityModels_powerLaw_H
#define viscosityModels_powerLaw_H
 
#include "viscosityModel.H"
#include "dimensionedScalar.H"
#include "volFields.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace viscosityModels
{
 
/*---------------------------------------------------------------------------*\
                           Class powerLaw Declaration
\*---------------------------------------------------------------------------*/
 
class powerLaw
:
    public viscosityModel
{
    // Private data
 
        dictionary powerLawCoeffs_;
 
        dimensionedScalar k_;
        dimensionedScalar n_;
        dimensionedScalar nuMin_;
        dimensionedScalar nuMax_;
 
 
protected:
 
    // Protected data
 
        volScalarField nu_;
 
 
    // Protected Member Functions
 
        //- Calculate and return the laminar viscosity
        tmp<volScalarField> calcNu() const;
 
 
public:
 
    //- Runtime type information
    TypeName("powerLaw");
 
 
    // Constructors
 
        //- Construct from components
        powerLaw
        (
            const word& name,
            const dictionary& viscosityProperties,
            const volVectorField& U,
            const surfaceScalarField& phi
        );
 
 
    //- Destructor
    virtual ~powerLaw() = default;
 
 
    // Member Functions
 
        //- Return the laminar viscosity
        virtual tmp<volScalarField> nu() const
        {
            return nu_;
        }
 
        //- Return the laminar viscosity for patch
        virtual tmp<scalarField> nu(const label patchi) const
        {
            return nu_.boundaryField()[patchi];
        }
 
        //- Correct the laminar viscosity
        virtual void correct()
        {
            nu_ = calcNu();
        }
 
        //- Read transportProperties dictionary
        virtual bool read(const dictionary& viscosityProperties);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace viscosityModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //