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partSmagorinsky.H
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partSmagorinsky.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::LESModels::partSmagorinsky
Group
grpLESTurbulence
Description
Dynamic SGS model with Lagrangian averaging for the particle phase
Reference:
\verbatim
Smagorinsky, J. (1963).
General circulation experiments with the primitive equations: I.
The basic experiment*.
Monthly weather review, 91(3), 99-164.
\endverbatim
The form of the Smagorinsky model implemented is obtained from the
k-equation model assuming local equilibrium which provides estimates of both
k and epsilon separate from the sub-grid scale viscosity:
\verbatim
B = 2/3*k*I - 2*nuSgs*dev(D)
where
D = symm(grad(U));
k from D:B + Ce*k^3/2/delta = 0
nuSgs = Ck*sqrt(k)*delta
\endverbatim
The default model coefficients are
\verbatim
SmagorinskyCoeffs
{
Ck 0.094;
Ce 1.048;
}
\endverbatim
See also
Foam::LESModels::kEqn
SourceFiles
partSmagorinsky.C
\*---------------------------------------------------------------------------*/
#ifndef partSmagorinsky_H
#define partSmagorinsky_H
#include "LESeddyViscosity.H"
#include "simpleFilter.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace LESModels
{
/*---------------------------------------------------------------------------*\
Class partSmagorinsky Declaration
\*---------------------------------------------------------------------------*/
template<class BasicTurbulenceModel>
class partSmagorinsky
:
public LESeddyViscosity<BasicTurbulenceModel>
{
// Private Member Functions
// Disallow default bitwise copy construct and assignment
partSmagorinsky(const partSmagorinsky&);
void operator=(const partSmagorinsky&);
protected:
// Protected data
dimensionedScalar Ck_;
dimensionedScalar Ci_;
dimensionedScalar nutMax_;
// Protected Member Functions
//- Return SGS kinetic energy
// calculated from the given velocity gradient
tmp<volScalarField> k(const tmp<volTensorField>& gradU) const;
//- Update the SGS eddy viscosity
virtual void correctNut();
public:
typedef typename BasicTurbulenceModel::alphaField alphaField;
typedef typename BasicTurbulenceModel::rhoField rhoField;
typedef typename BasicTurbulenceModel::transportModel transportModel;
//- Runtime type information
TypeName("partSmagorinsky");
// Constructors
//- Construct from components
partSmagorinsky
(
const alphaField& alpha,
const rhoField& rho,
const volVectorField& U,
const surfaceScalarField& alphaRhoPhi,
const surfaceScalarField& phi,
const transportModel& transport,
const word& propertiesName = turbulenceModel::propertiesName,
const word& type = typeName
);
//- Destructor
virtual ~partSmagorinsky()
{}
// Member Functions
//- Read model coefficients if they have changed
virtual bool read();
//- Return SGS kinetic energy
virtual tmp<volScalarField> k() const
{
return k(fvc::grad(this->U_));
}
//- Correct Eddy-Viscosity and related properties
virtual void correct();
//- Return spherical part of the SGS stress tensor
virtual tmp<volScalarField> spherSigmaSGS();
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace LESModels
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#ifdef NoRepository
#include "partSmagorinsky.C"
#endif
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //