kLowReWallFunctionFvPatchScalarField.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::kLowReWallFunctionFvPatchScalarField
 
Group
    grpWallFunctions
 
Description
    This boundary condition provides a wall function for the turbulent kinetic
    energy (i.e. \c k) for low- and high-Reynolds number simulations.
 
Usage
    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        // Mandatory entries
        type            kLowReWallFunction;
 
        // Optional entries
        Ceps2           1.9;
        Ck              -0.416;
        Bk              8.366;
        C               11.0;
 
        // Inherited entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property  | Description                     | Type   | Reqd | Deflt
      type      | Type name: kLowReWallFunction   | word   | yes  | -
      Ceps2     | Model coefficient               | scalar | no   |  1.9
      Ck        | Model coefficient               | scalar | no   | -0.416
      Bk        | Model coefficient               | scalar | no   |  8.366
      C         | Model coefficient               | scalar | no   |  11.0
    \endtable
 
    The inherited entries are elaborated in:
      - \link fixedValueFvPatchField.H \endlink
      - \link wallFunctionCoefficients.H \endlink
 
    Viscous and inertial sublayer predictions for \c k are blended in
    a stepwise manner:
 
    \f[
        k = k_{log} \qquad if \quad y^+ > y^+_{intersection}
    \f]
    \f[
        k = k_{vis} \qquad if \quad y^+ <= y^+_{intersection}
    \f]
    where
    \vartable
      k_{vis}   | k prediction in the viscous sublayer
      k_{log}   | k prediction in the inertial sublayer
      y^+       | estimated wall-normal height of the cell centre in wall units
      y^+_{intersection} | estimated \f$y^+\f$ where sublayers intersect
    \endvartable
 
SourceFiles
    kLowReWallFunctionFvPatchScalarField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef kLowReWallFunctionFvPatchScalarField_H
#define kLowReWallFunctionFvPatchScalarField_H
 
#include "fixedValueFvPatchField.H"
#include "wallFunctionCoefficients.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
            Class kLowReWallFunctionFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/
 
class kLowReWallFunctionFvPatchScalarField
:
    public fixedValueFvPatchField<scalar>
{
protected:
 
    // Protected Data
 
        //- Ceps2 coefficient
        scalar Ceps2_;
 
        //- Ck coefficient
        scalar Ck_;
 
        //- Bk coefficient
        scalar Bk_;
 
        //- C coefficient
        scalar C_;
 
        //- Wall-function coefficients
        wallFunctionCoefficients wallCoeffs_;
 
 
    // Protected Member Functions
 
        //- Write local wall function variables
        void writeLocalEntries(Ostream&) const;
 
 
public:
 
    //- Runtime type information
    TypeName("kLowReWallFunction");
 
 
    // Constructors
 
        //- Construct from patch and internal field
        kLowReWallFunctionFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Construct from patch, internal field and dictionary
        kLowReWallFunctionFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given kLowReWallFunctionFvPatchScalarField
        //- onto a new patch
        kLowReWallFunctionFvPatchScalarField
        (
            const kLowReWallFunctionFvPatchScalarField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Construct as copy
        kLowReWallFunctionFvPatchScalarField
        (
            const kLowReWallFunctionFvPatchScalarField&
        );
 
        //- Construct and return a clone
        virtual tmp<fvPatchScalarField> clone() const
        {
            return tmp<fvPatchScalarField>
            (
                new kLowReWallFunctionFvPatchScalarField(*this)
            );
        }
 
        //- Construct as copy setting internal field reference
        kLowReWallFunctionFvPatchScalarField
        (
            const kLowReWallFunctionFvPatchScalarField&,
            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 kLowReWallFunctionFvPatchScalarField(*this, iF)
            );
        }
 
 
    // Member Functions
 
        // Evaluation
 
            //- Update the coefficients associated with the patch field
            virtual void updateCoeffs();
 
 
        // I-O
 
            //- Write
            virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //