omegaWallFunctionFvPatchScalarField.H

Go to the documentation of this file.

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
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.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::omegaWallFunctionFvPatchScalarField
 
Group
    grpWallFunctions
 
Description
    This boundary condition provides a wall function constraint on turbulnce
    specific dissipation, omega.  The values are computed using:
 
        \f[
            \omega = sqrt(\omega_{vis}^2 + \omega_{log}^2)
        \f]
 
    where
 
    \vartable
        \omega_{vis} | omega in viscous region
        \omega_{log} | omega in logarithmic region
    \endvartable
 
    Model described by Eq.(15) of:
    \verbatim
        Menter, F., Esch, T.
        "Elements of Industrial Heat Transfer Prediction"
        16th Brazilian Congress of Mechanical Engineering (COBEM),
        Nov. 2001
    \endverbatim
 
    \heading Patch usage
 
    \table
        Property     | Description             | Required    | Default value
        Cmu          | model coefficient       | no          | 0.09
        kappa        | Von Karman constant     | no          | 0.41
        E            | model coefficient       | no          | 9.8
        beta1        | model coefficient       | no          | 0.075
    \endtable
 
    Example of the boundary condition specification:
    \verbatim
    myPatch
    {
        type            omegaWallFunction;
    }
    \endverbatim
 
SourceFiles
    omegaWallFunctionFvPatchScalarField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef omegaWallFunctionFvPatchScalarField_H
#define omegaWallFunctionFvPatchScalarField_H
 
#include "fixedValueFvPatchField.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
class turbulenceModel;
 
/*---------------------------------------------------------------------------*\
             Class omegaWallFunctionFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/
 
class omegaWallFunctionFvPatchScalarField
:
    public fixedValueFvPatchField<scalar>
{
protected:
 
    // Protected data
 
        //- Tolerance used in weighted calculations
        static scalar tolerance_;
 
        //- Cmu coefficient
        scalar Cmu_;
 
        //- Von Karman constant
        scalar kappa_;
 
        //- E coefficient
        scalar E_;
 
        //- beta1 coefficient
        scalar beta1_;
 
        //- Y+ at the edge of the laminar sublayer
        scalar yPlusLam_;
 
        //- Local copy of turbulence G field
        scalarField G_;
 
        //- Local copy of turbulence omega field
        scalarField omega_;
 
        //- Initialised flag
        bool initialised_;
 
        //- Master patch ID
        label master_;
 
        //- List of averaging corner weights
        List<List<scalar> > cornerWeights_;
 
 
    // Protected Member Functions
 
        //- Check the type of the patch
        virtual void checkType();
 
        //- Write local wall function variables
        virtual void writeLocalEntries(Ostream&) const;
 
        //- Set the master patch - master is responsible for updating all
        //  wall function patches
        virtual void setMaster();
 
        //- Create the averaging weights for cells which are bounded by
        //  multiple wall function faces
        virtual void createAveragingWeights();
 
        //- Helper function to return non-const access to an omega patch
        virtual omegaWallFunctionFvPatchScalarField& omegaPatch
        (
            const label patchi
        );
 
        //- Main driver to calculate the turbulence fields
        virtual void calculateTurbulenceFields
        (
            const turbulenceModel& turbulence,
            scalarField& G0,
            scalarField& omega0
        );
 
        //- Calculate the omega and G
        virtual void calculate
        (
            const turbulenceModel& turbulence,
            const List<scalar>& cornerWeights,
            const fvPatch& patch,
            scalarField& G,
            scalarField& omega
        );
 
        //- Return non-const access to the master patch ID
        virtual label& master()
        {
            return master_;
        }
 
 
public:
 
    //- Runtime type information
    TypeName("omegaWallFunction");
 
 
    // Constructors
 
        //- Construct from patch and internal field
        omegaWallFunctionFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Construct from patch, internal field and dictionary
        omegaWallFunctionFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given
        // omegaWallFunctionFvPatchScalarField
        //  onto a new patch
        omegaWallFunctionFvPatchScalarField
        (
            const omegaWallFunctionFvPatchScalarField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Construct as copy
        omegaWallFunctionFvPatchScalarField
        (
            const omegaWallFunctionFvPatchScalarField&
        );
 
        //- Construct and return a clone
        virtual tmp<fvPatchScalarField> clone() const
        {
            return tmp<fvPatchScalarField>
            (
                new omegaWallFunctionFvPatchScalarField(*this)
            );
        }
 
        //- Construct as copy setting internal field reference
        omegaWallFunctionFvPatchScalarField
        (
            const omegaWallFunctionFvPatchScalarField&,
            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 omegaWallFunctionFvPatchScalarField(*this, iF)
            );
        }
 
 
    // Member functions
 
        // Access
 
            //- Return non-const access to the master's G field
            scalarField& G(bool init = false);
 
            //- Return non-const access to the master's omega field
            scalarField& omega(bool init = false);
 
 
        // Evaluation functions
 
            //- Update the coefficients associated with the patch field
            virtual void updateCoeffs();
 
            //- Update the coefficients associated with the patch field
            virtual void updateCoeffs(const scalarField& weights);
 
            //- Manipulate matrix
            virtual void manipulateMatrix(fvMatrix<scalar>& matrix);
 
            //- Manipulate matrix with given weights
            virtual void manipulateMatrix
            (
                fvMatrix<scalar>& matrix,
                const scalarField& weights
            );
 
 
        // I-O
 
            //- Write
            virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //