alphatWallFunctionFvPatchScalarField.H

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License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
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    for more details.
 
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    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::compressible::alphatWallFunctionFvPatchScalarField
 
Description
    This boundary condition provides a turbulent thermal diffusivity condition
    when using wall functions
    - replicates OpenFOAM v1.5 (and earlier) behaviour
 
    The turbulent thermal diffusivity calculated using:
 
        \f[
            \alpha_t = \frac{\mu_t}{Pr_t}
        \f]
 
    where
 
    \vartable
        \alpha_t| turbulence thermal diffusivity
        \mu_t   | turbulence viscosity
        Pr_t    | turblent Prandtl number
    \endvartable
 
Usage
    \table
        Property     | Description             | Required    | Default value
        nut          | turbulence viscosity field name | no  | nut
        Prt          | turbulent Prandtl number | no          | 0.85
    \endtable
 
    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        type            alphatWallFunction;
        nut             nut;
        Prt             0.85;
        value           uniform 0; // optional value entry
    }
    \endverbatim
 
See also
    Foam::fixedValueFvPatchField
 
SourceFiles
    alphatWallFunctionFvPatchScalarField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef alphatWallFunctionFvPatchScalarField_H
#define alphatWallFunctionFvPatchScalarField_H
 
#include "fixedValueFvPatchFields.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace compressible
{
 
/*---------------------------------------------------------------------------*\
            Class alphatWallFunctionFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/
 
class alphatWallFunctionFvPatchScalarField
:
    public fixedValueFvPatchScalarField
{
    // Private Data
 
        //- Turbulent Prandtl number (default = 0.85)
        scalar Prt_;
 
 
public:
 
    //- Runtime type information
    TypeName("compressible::alphatWallFunction");
 
 
    // Constructors
 
        //- Construct from patch, internal field and dictionary
        alphatWallFunctionFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given
        //  alphatWallFunctionFvPatchScalarField
        //  onto a new patch
        alphatWallFunctionFvPatchScalarField
        (
            const alphatWallFunctionFvPatchScalarField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Disallow copy without setting internal field reference
        alphatWallFunctionFvPatchScalarField
        (
            const alphatWallFunctionFvPatchScalarField&
        ) = delete;
 
        //- Copy constructor setting internal field reference
        alphatWallFunctionFvPatchScalarField
        (
            const alphatWallFunctionFvPatchScalarField&,
            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 alphatWallFunctionFvPatchScalarField(*this, iF)
            );
        }
 
 
    // Member Functions
 
        // Evaluation functions
 
            //- Update the coefficients associated with the patch field
            virtual void updateCoeffs();
 
 
        // I-O
 
            //- Write
            virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace compressible
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //