openfoam/src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/wallFunctions/nutWallFunctions/nutRoughWallFunction/nutRoughWallFunctionFvPatchScalarField.H

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

Description
    Boundary condition for turbulent (kinematic) viscosity when using wall
    functions for rough walls.

    Manipulates the E parameter to account for roughness effects, based on
    KsPlus.

    - roughness height = sand-grain roughness (0 for smooth walls)
    - roughness constant = 0.5-1.0 (0.5 default)

SourceFiles
    nutRoughWallFunctionFvPatchScalarField.C

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

#ifndef nutRoughWallFunctionFvPatchScalarField_H
#define nutRoughWallFunctionFvPatchScalarField_H

#include "fixedValueFvPatchFields.H"

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

namespace Foam
{
namespace incompressible
{
namespace RASModels
{

/*---------------------------------------------------------------------------*\
           Class nutRoughWallFunctionFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/

class nutRoughWallFunctionFvPatchScalarField
:
    public fixedValueFvPatchScalarField
{
    // Private data

        //- Name of turbulence kinetic energy field
        word kName_;

        //- Name of laminar viscosity field
        word nuName_;

        //- Roughness height
        scalarField Ks_;

        //- Roughness constant
        scalarField Cs_;


    // Private member functions

        //- Compute the roughness function
        scalar fnRough(const scalar KsPlus, const scalar Cs) const;


public:

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


    // Constructors

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

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

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

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

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

        //- Construct as copy setting internal field reference
        nutRoughWallFunctionFvPatchScalarField
        (
            const nutRoughWallFunctionFvPatchScalarField&,
            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 nutRoughWallFunctionFvPatchScalarField(*this, iF)
            );
        }


    // Member functions

        // Mapping functions

            //- Map (and resize as needed) from self given a mapping object
            virtual void autoMap
            (
                const fvPatchFieldMapper&
            );

            //- Reverse map the given fvPatchField onto this fvPatchField
            virtual void rmap
            (
                const fvPatchScalarField&,
                const labelList&
            );

        // Evaluation functions

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


        // I-O

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


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

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

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

#endif

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