/usr/include/freefoam/incompressibleLESModels/spectEddyVisc.H is in libfreefoam-dev 0.1.0+dfsg-1build1.
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
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\\/ M anipulation |
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License
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Class
Foam::incompressible::LESModels::spectEddyVisc
Description
The Isochoric spectral Eddy Viscosity Model for incompressible flows.
Algebraic eddy viscosity SGS model founded on the assumption that
local equilibrium prevail and that viscous effects may be of importance.
Thus,
@verbatim
B = 2/3*k*I - 2*nuSgs*dev(D)
Beff = 2/3*k*I - 2*nuEff*dev(D)
where
k = cK1*delta^(2/3)*eps^(2/3)*exp(-cK2*delta^(4/3)*nu*eps^(-1/3)) -
ck3*sqrt(eps*nu)*erfc(ck4*delta^(-2/3)*sqrt(nu)*eps^(-1/6)))
nuEff = nu/(1 - exp(-cB*pow((nu/nuEff), 1.0/3.0)*pow(Re, -2.0/3.0)))
nuSgs = nuEff - nu
Re = delta^2*mag(D)/nu
@endverbatim
SourceFiles
spectEddyVisc.C
\*---------------------------------------------------------------------------*/
#ifndef spectEddyVisc_H
#define spectEddyVisc_H
#include <incompressibleLESModels/GenEddyVisc.H>
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace incompressible
{
namespace LESModels
{
/*---------------------------------------------------------------------------*\
Class spectEddyVisc Declaration
\*---------------------------------------------------------------------------*/
class spectEddyVisc
:
public GenEddyVisc
{
// Private data
dimensionedScalar cB_;
dimensionedScalar cK1_;
dimensionedScalar cK2_;
dimensionedScalar cK3_;
dimensionedScalar cK4_;
// Private Member Functions
//- Update sub-grid scale fields
void updateSubGridScaleFields(const volTensorField& gradU);
// Disallow default bitwise copy construct and assignment
spectEddyVisc(const spectEddyVisc&);
spectEddyVisc& operator=(const spectEddyVisc&);
public:
//- Runtime type information
TypeName("spectEddyVisc");
// Constructors
// Construct from components
spectEddyVisc
(
const volVectorField& U,
const surfaceScalarField& phi,
transportModel& transport
);
//- Destructor
virtual ~spectEddyVisc()
{}
// Member Functions
//- Return SGS kinetic energy
virtual tmp<volScalarField> k() const;
//- Correct Eddy-Viscosity and related properties
virtual void correct(const tmp<volTensorField>&);
//- Read LESProperties dictionary
virtual bool read();
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace LESModels
} // End namespace incompressible
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************ vim: set sw=4 sts=4 et: ************************ //
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