nutWallFunctionFvPatchScalarField.H

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/*---------------------------------------------------------------------------*\
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License
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Class
    Foam::incompressible::RASModels::nutWallFunctionFvPatchScalarField

Description
    Boundary condition for turbulent (kinematic) viscosity when using wall
    functions
    - replicates OpenFOAM v1.5 (and earlier) behaviour

SourceFiles
    nutWallFunctionFvPatchScalarField.C

\*---------------------------------------------------------------------------*/

#ifndef nutWallFunctionFvPatchScalarField_H
#define nutWallFunctionFvPatchScalarField_H

#include <finiteVolume/fixedValueFvPatchFields.H>

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{
namespace incompressible
{
namespace RASModels
{

/*---------------------------------------------------------------------------*\
             Class nutWallFunctionFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/

class nutWallFunctionFvPatchScalarField
:
    public fixedValueFvPatchScalarField
{
protected:

    // Protected data

        //- Cmu coefficient
        scalar Cmu_;

        //- Von Karman constant
        scalar kappa_;

        //- E coefficient
        scalar E_;

        //- Y+ at the edge of the laminar sublayer
        scalar yPlusLam_;


    // Protected member functions

        //- Check the type of the patch
        virtual void checkType();

        //- Calculate the Y+ at the edge of the laminar sublayer
        virtual scalar calcYPlusLam(const scalar kappa, const scalar E) const;

        //- Calculate the turbulence viscosity
        virtual tmp<scalarField> calcNut() const;

        //- Write local wall function variables
        virtual void writeLocalEntries(Ostream&) const;


public:

    //- Runtime type information
    TypeName("nutWallFunction");


    // Constructors

        //- Construct from patch and internal field
        nutWallFunctionFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&
        );

        //- Construct from patch, internal field and dictionary
        nutWallFunctionFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&
        );

        //- Construct by mapping given
        //  nutWallFunctionFvPatchScalarField
        //  onto a new patch
        nutWallFunctionFvPatchScalarField
        (
            const nutWallFunctionFvPatchScalarField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fvPatchFieldMapper&
        );

        //- Construct as copy
        nutWallFunctionFvPatchScalarField
        (
            const nutWallFunctionFvPatchScalarField&
        );

        //- Construct and return a clone
        virtual tmp<fvPatchScalarField> clone() const
        {
            return tmp<fvPatchScalarField>
            (
                new nutWallFunctionFvPatchScalarField(*this)
            );
        }

        //- Construct as copy setting internal field reference
        nutWallFunctionFvPatchScalarField
        (
            const nutWallFunctionFvPatchScalarField&,
            const DimensionedField<scalar, volMesh>&
        );

        //- Construct and return a clone setting internal field reference
        virtual tmp<fvPatchScalarField> clone
        (
            const DimensionedField<scalar, volMesh>& iF
        ) const
        {
            return tmp<fvPatchScalarField>
            (
                new nutWallFunctionFvPatchScalarField(*this, iF)
            );
        }


    // Member functions

        // Evaluation functions

            //- Calculate and return the yPlus at the boundary
            virtual tmp<scalarField> yPlus() const;

            //- Update the coefficients associated with the patch field
            virtual void updateCoeffs();


        // I-O

            //- Write
            virtual void write(Ostream&) const;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace RASModels
} // End namespace incompressible
} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

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