nutkAtmRoughWallFunctionFvPatchScalarField.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::nutkAtmRoughWallFunctionFvPatchScalarField
 
Description
    This boundary condition provides a turbulent kinematic viscosity for
    atmospheric velocity profiles.  It is designed to be used in conjunction
    with the atmBoundaryLayerInletVelocity boundary condition.  The values
    are calculated using:
 
        \f[
            U = frac{U_f}{\kappa} ln(\frac{z + z_0}{z_0})
        \f]
 
    where
 
    \vartable
        U_f    | frictional velocity
        \kappa | Von Karman's constant
        z_0    | surface roughness length
        z      | vertical co-ordinate
    \endvartable
 
Usage
    \table
        Property     | Description             | Required    | Default value
        z0           | surface roughness length| yes         |
    \endtable
 
    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        type            nutkAtmRoughWallFunction;
        z0              uniform 0;
    }
    \endverbatim
 
See also
    Foam::nutkWallFunctionFvPatchField
 
SourceFiles
    nutkAtmRoughWallFunctionFvPatchScalarField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef nutkAtmRoughWallFunctionFvPatchScalarField_H
#define nutkAtmRoughWallFunctionFvPatchScalarField_H
 
#include "nutkWallFunctionFvPatchScalarField.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
         Class nutkAtmRoughWallFunctionFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/
 
class nutkAtmRoughWallFunctionFvPatchScalarField
:
    public nutkWallFunctionFvPatchScalarField
{
protected:
 
    // Protected data
 
        //- Surface roughness length
        scalarField z0_;
 
 
    // Protected Member Functions
 
        //- Calculate the turbulence viscosity
        virtual tmp<scalarField> nut() const;
 
 
public:
 
    //- Runtime type information
    TypeName("nutkAtmRoughWallFunction");
 
 
    // Constructors
 
        //- Construct from patch, internal field and dictionary
        nutkAtmRoughWallFunctionFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given
        //  nutkAtmRoughWallFunctionFvPatchScalarField
        //  onto a new patch
        nutkAtmRoughWallFunctionFvPatchScalarField
        (
            const nutkAtmRoughWallFunctionFvPatchScalarField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Disallow copy without setting internal field reference
        nutkAtmRoughWallFunctionFvPatchScalarField
        (
            const nutkAtmRoughWallFunctionFvPatchScalarField&
        ) = delete;
 
        //- Copy constructor setting internal field reference
        nutkAtmRoughWallFunctionFvPatchScalarField
        (
            const nutkAtmRoughWallFunctionFvPatchScalarField&,
            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 nutkAtmRoughWallFunctionFvPatchScalarField(*this, iF)
            );
        }
 
 
    // Member Functions
 
        // Access functions
 
            // Return z0
            scalarField& z0()
            {
                return z0_;
            }
 
 
        // Mapping functions
 
            //- Map the given fvPatchField onto this fvPatchField
            virtual void map
            (
                const fvPatchScalarField&,
                const fvPatchFieldMapper&
            );
 
            //- Reset the fvPatchField to the given fvPatchField
            //  Used for mesh to mesh mapping
            virtual void reset(const fvPatchScalarField&);
 
 
        // I-O
 
            //- Write
            virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //