BinghamPlastic.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::mixtureViscosityModels::BinghamPlastic
 
Description
     Viscosity correction model for Bingham plastics.
 
    The strain-rate used is defined as sqrt(2.0)*mag(symm(grad(U)))
 
SourceFiles
    BinghamPlastic.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef BinghamPlastic_H
#define BinghamPlastic_H
 
#include "plastic.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace mixtureViscosityModels
{
 
/*---------------------------------------------------------------------------*\
                       Class BinghamPlastic Declaration
\*---------------------------------------------------------------------------*/
 
class BinghamPlastic
:
    public plastic
{
    // Private data
 
        //- Yield stress coefficient
        dimensionedScalar yieldStressCoeff_;
 
        //- Yield stress exponent
        dimensionedScalar yieldStressExponent_;
 
        //- Yield stress offset
        dimensionedScalar yieldStressOffset_;
 
 
public:
 
    //- Runtime type information
    TypeName("BinghamPlastic");
 
 
    // Constructors
 
        //- Construct from mixture
        BinghamPlastic
        (
            const incompressibleDriftFluxMixture& mixture
        );
 
 
    //- Destructor
    virtual ~BinghamPlastic()
    {}
 
 
    // Member Functions
 
        //- Return the mixture viscosity
        //  given the viscosity of the continuous phase
        virtual tmp<volScalarField> mu
        (
            const volScalarField& muc,
            const volVectorField& U
        ) const;
 
        //- Read phaseProperties dictionary
        virtual bool read();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace mixtureViscosityModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //