fluxCorrectedVelocityFvPatchVectorField.H

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/*---------------------------------------------------------------------------*\
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    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
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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.
 
    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::fluxCorrectedVelocityFvPatchVectorField
 
Group
    grpOutletBoundaryConditions
 
Description
    This boundary condition provides a velocity outlet boundary condition for
    patches where the pressure is specified.  The outflow velocity is obtained
    by "zeroGradient" and then corrected from the flux:
 
        \f[
            U_p = U_c - n (n \cdot U_c) + \frac{n \phi_p}{|S_f|}
        \f]
 
    where
 
    \vartable
        U_p | velocity at the patch [m/s]
        U_c | velocity in cells adjacent to the patch [m/s]
        n   | patch normal vectors
        \phi_p | flux at the patch [m3/s or kg/s]
        S_f | patch face area vectors [m2]
    \endvartable
 
    where
 
    \table
        Property     | Description             | Required    | Default value
        phi          | name of flux field      | no          | phi
        rho          | name of density field   | no          | rho
    \endtable
 
    Example of the boundary condition specification:
    \verbatim
    myPatch
    {
        type            fluxCorrectedVelocity;
        phi             phi;
        rho             rho;
    }
    \endverbatim
 
Note
    If reverse flow is possible or expected use the
    pressureInletOutletVelocity condition instead.
 
SeeAlso
    Foam::zeroGradientFvPatchField
    Foam::pressureInletOutletVelocityFvPatchVectorField
 
SourceFiles
    fluxCorrectedVelocityFvPatchVectorField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef fluxCorrectedVelocityFvPatchVectorField_H
#define fluxCorrectedVelocityFvPatchVectorField_H
 
#include "fvPatchFields.H"
#include "zeroGradientFvPatchFields.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
           Class fluxCorrectedVelocityFvPatchVectorField Declaration
\*---------------------------------------------------------------------------*/
 
class fluxCorrectedVelocityFvPatchVectorField
:
    public zeroGradientFvPatchVectorField
{
    // Private data
 
        //- Name of flux field
        word phiName_;
 
        //- Name of density field
        word rhoName_;
 
 
public:
 
    //- Runtime type information
    TypeName("fluxCorrectedVelocity");
 
 
    // Constructors
 
        //- Construct from patch and internal field
        fluxCorrectedVelocityFvPatchVectorField
        (
            const fvPatch&,
            const DimensionedField<vector, volMesh>&
        );
 
        //- Construct from patch, internal field and dictionary
        fluxCorrectedVelocityFvPatchVectorField
        (
            const fvPatch&,
            const DimensionedField<vector, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given fluxCorrectedVelocityFvPatchVectorField
        //  onto a new patch
        fluxCorrectedVelocityFvPatchVectorField
        (
            const fluxCorrectedVelocityFvPatchVectorField&,
            const fvPatch&,
            const DimensionedField<vector, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Construct and return a clone
        virtual tmp<fvPatchVectorField> clone() const
        {
            return tmp<fvPatchVectorField>
            (
                new fluxCorrectedVelocityFvPatchVectorField(*this)
            );
        }
 
        //- Construct as copy setting internal field reference
        fluxCorrectedVelocityFvPatchVectorField
        (
            const fluxCorrectedVelocityFvPatchVectorField&,
            const DimensionedField<vector, volMesh>&
        );
 
        //- Construct and return a clone setting internal field reference
        virtual tmp<fvPatchVectorField> clone
        (
            const DimensionedField<vector, volMesh>& iF
        ) const
        {
            return tmp<fvPatchVectorField>
            (
                new fluxCorrectedVelocityFvPatchVectorField(*this, iF)
            );
        }
 
 
    // Member functions
 
        // Evaluation functions
 
            //- Evaluate the patch field
            virtual void evaluate
            (
                const Pstream::commsTypes commsType=Pstream::blocking
            );
 
 
        //- Write
        virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //