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twophasekOmega.H
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twophasekOmega.H
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/*---------------------------------------------------------------------------*\
Copyright (C) 2015 Cyrille Bonamy, Julien Chauchat, Tian-Jian Hsu
and contributors
License
This file is part of SedFOAM.
SedFOAM 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.
SedFOAM 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 SedFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::RASModels::twophasekOmega
Group
grpRASTurbulence
Description
Standard high Reynolds-number k-omega turbulence model for
incompressible and compressible flows.
References:
\verbatim
Original model:
Wilcox, D. C. (1998).
Turbulence modeling for CFD
(Vol. 2, pp. 103-217). La Canada, CA: DCW industries.
Two-phase adaptation:
Amoudry, L. O. (2014).
Extension of k-omega turbulence closure to two-phase sediment
transport modelling: Application to oscillatory sheet flows.
Advances in Water Ressources, 72, 110-121
\endverbatim
The default model coefficients are
\verbatim
twophasekOmegaCoeffs
{
Cmu 0.09;
alphaOmega 0.52;
betaOmega 0.072;
C3om 0.35;
C4om 1.0;
KE2 1.0;
KE4 1.0;
alphaKomega 0.5;
alphaOmegaOmega 0.5;
Clim 0.0;
sigmad 0.0
popeCorrection false;
}
\endverbatim
For the revisited version of the model from Wilcox (2006),
model coefficients should be modified following:
\verbatim
twophasekOmegaCoeffs
{
betaOmega 0.0708;
alphaKomega 0.6;
Clim 0.875;
sigmad 0.125
popeCorrection True (only for 3D cases);
}
\endverbatim
This file is in the \dir turbulenceModels/RAS/twophasekOmega subdirectory
inside the \dir turbulenceModels/RAS subdirectory
inside the \dir turbulenceModels subdirectory
SourceFiles
twophasekOmega.C
\*---------------------------------------------------------------------------*/
#ifndef twophasekOmega_H
#define twophasekOmega_H
#include "RASModel.H"
#include "eddyViscosity.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace RASModels
{
/*---------------------------------------------------------------------------*\
Class twophasekOmega Declaration
\*---------------------------------------------------------------------------*/
template<class BasicTurbulenceModel>
class twophasekOmega
:
public eddyViscosity<RASModel<BasicTurbulenceModel>>
{
protected:
// Protected data
// Model coefficients
Switch popeCorrection_;
Switch writeTke_;
dimensionedScalar C3om_;
dimensionedScalar C4om_;
dimensionedScalar KE2_;
dimensionedScalar KE4_;
dimensionedScalar Cmu_;
dimensionedScalar betaOmega_;
dimensionedScalar nutMax_;
dimensionedScalar Clim_;
dimensionedScalar sigmad_;
dimensionedScalar alphaKOmega_;
dimensionedScalar alphaOmega_;
dimensionedScalar alphaOmegaOmega_;
// Flow information
// two phase information
const volScalarField& tmfexp_;
const volScalarField& ESD3_;
const volScalarField& ESD4_;
const volScalarField& ESD5_;
const volScalarField& ESD_;
// Fields
volScalarField k_;
volScalarField omega_;
// Protected Member Functions
virtual void correctNut();
public:
typedef typename BasicTurbulenceModel::alphaField alphaField;
typedef typename BasicTurbulenceModel::rhoField rhoField;
typedef typename BasicTurbulenceModel::transportModel transportModel;
//- Runtime type information
TypeName("twophasekOmega");
// Constructors
//- Construct from components
twophasekOmega
(
const alphaField& beta,
const rhoField& rho,
const volVectorField& U,
const surfaceScalarField& betaRhoPhi,
const surfaceScalarField& phi,
const transportModel& transport,
const word& propertiesName = turbulenceModel::propertiesName,
const word& type = typeName
);
//- Destructor
virtual ~twophasekOmega()
{}
// Member Functions
//- Read RASProperties dictionary
virtual bool read();
//- Return the effective diffusivity for k
tmp<volScalarField> DkEff() const
{
return tmp<volScalarField>
(
new volScalarField
(
"DkEff",
alphaKOmega_*this->nut_ + this->nu()
)
);
}
//- Return the effective diffusivity for omega
tmp<volScalarField> DomegaEff() const
{
return tmp<volScalarField>
(
new volScalarField
(
"DomegaEff",
alphaOmegaOmega_*this->nut_ + this->nu()
)
);
}
//- Return the turbulence kinetic energy
virtual tmp<volScalarField> k() const
{
return k_;
}
//- Return the turbulence specific dissipation rate
virtual tmp<volScalarField> omega() const
{
return omega_;
}
virtual tmp<volScalarField> tmf() const
{
return Foam::exp(Cmu_*tmfexp_*omega_);
}
virtual tmp<volScalarField> ESD2() const
{
return ESD3_*(1.0-tmf());
}
//- Return the turbulence kinetic energy dissipation rate
virtual tmp<volScalarField> epsilon() const
{
return tmp<volScalarField>
(
new volScalarField
(
IOobject
(
"epsilon",
this->mesh_.time().timeName(),
this->mesh_
),
Cmu_*k_*omega_,
omega_.boundaryField().types()
)
);
}
//- Solve the turbulence equations and correct the turbulence viscosity
virtual void correct();
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace RASModels
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#ifdef NoRepository
#include "twophasekOmega.C"
#endif
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //