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qZeta.H
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qZeta.H
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/*---------------------------------------------------------------------------*\
========= |
\\ / 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::incompressible::RASModels::qZeta
Group
grpIcoRASTurbulence
Description
Gibson and Dafa'Alla's q-zeta two-equation low-Re turbulence model
for incompressible flows
This turbulence model is described in:
\verbatim
Dafa'Alla, A.A., Juntasaro, E. & Gibson, M.M. (1996).
Calculation of oscillating boundary layers with the
q-zeta turbulence model.
Engineering Turbulence Modelling and Experiments 3:
Proceedings of the Third International Symposium,
Crete, Greece, May 27-29, 141.
\endverbatim
which is a development of the original q-zeta model described in:
\verbatim
Gibson, M. M., & Dafa'Alla, A. A. (1995).
Two-equation model for turbulent wall flow.
AIAA journal, 33(8), 1514-1518.
\endverbatim
SourceFiles
qZeta.C
\*---------------------------------------------------------------------------*/
#ifndef qZeta_H
#define qZeta_H
#include "turbulentTransportModel.H"
#include "eddyViscosity.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace incompressible
{
namespace RASModels
{
/*---------------------------------------------------------------------------*\
Class qZeta Declaration
\*---------------------------------------------------------------------------*/
class qZeta
:
public eddyViscosity<incompressible::RASModel>
{
protected:
// Protected data
// Model coefficients
dimensionedScalar Cmu_;
dimensionedScalar C1_;
dimensionedScalar C2_;
dimensionedScalar sigmaZeta_;
Switch anisotropic_;
//- Lower limit of q
dimensionedScalar qMin_;
//- Lower limit of zeta
dimensionedScalar zetaMin_;
// Fields
volScalarField k_;
volScalarField epsilon_;
volScalarField q_;
volScalarField zeta_;
// Protected Member Functions
tmp<volScalarField> fMu() const;
tmp<volScalarField> f2() const;
virtual void correctNut();
public:
//- Runtime type information
TypeName("qZeta");
// Constructors
//- Construct from components
qZeta
(
const geometricOneField& alpha,
const geometricOneField& rho,
const volVectorField& U,
const surfaceScalarField& alphaRhoPhi,
const surfaceScalarField& phi,
const transportModel& transport,
const word& propertiesName = turbulenceModel::propertiesName,
const word& type = typeName
);
//- Destructor
virtual ~qZeta()
{}
// Member Functions
//- Read RASProperties dictionary
virtual bool read();
//- Return the lower allowable limit for q (default: SMALL)
const dimensionedScalar& qMin() const
{
return qMin_;
}
//- Return the lower allowable limit for zeta (default: SMALL)
const dimensionedScalar& zetaMin() const
{
return zetaMin_;
}
//- Allow qMin to be changed
dimensionedScalar& qMin()
{
return qMin_;
}
//- Allow zetaMin to be changed
dimensionedScalar& zetaMin()
{
return zetaMin_;
}
//- Return the effective diffusivity for q
tmp<volScalarField> DqEff() const
{
return tmp<volScalarField>
(
new volScalarField("DqEff", nut_ + nu())
);
}
//- Return the effective diffusivity for epsilon
tmp<volScalarField> DzetaEff() const
{
return tmp<volScalarField>
(
new volScalarField("DzetaEff", nut_/sigmaZeta_ + nu())
);
}
//- Return the turbulence kinetic energy
virtual tmp<volScalarField> k() const
{
return k_;
}
//- Return the turbulence kinetic energy dissipation rate
virtual tmp<volScalarField> epsilon() const
{
return epsilon_;
}
virtual const volScalarField& q() const
{
return q_;
}
virtual const volScalarField& zeta() const
{
return zeta_;
}
//- Solve the turbulence equations and correct the turbulence viscosity
virtual void correct();
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace RASModels
} // End namespace incompressible
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //