1 /*---------------------------------------------------------------------------*\
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5 \\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
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25 Foam::compressible::LESModels::GenEddyVisc
28 General base class for all compressible models that can be implemented as
29 an eddy viscosity, i.e. algebraic and one-equation models.
31 Contains fields for k (SGS turbulent kinetic energy), gamma
32 (modelled viscosity) and epsilon (SGS dissipation).
37 \*---------------------------------------------------------------------------*/
39 #ifndef compressibleGenEddyVisc_H
40 #define compressibleGenEddyVisc_H
44 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
48 namespace compressible
53 /*---------------------------------------------------------------------------*\
54 Class GenEddyVisc Declaration
55 \*---------------------------------------------------------------------------*/
59 virtual public LESModel
61 // Private Member Functions
63 // Disallow default bitwise copy construct and assignment
64 GenEddyVisc(const GenEddyVisc&);
65 GenEddyVisc& operator=(const GenEddyVisc&);
72 dimensionedScalar ce_;
73 dimensionedScalar Prt_;
78 volScalarField muSgs_;
79 volScalarField alphaSgs_;
84 //- Partial Runtime type information
85 static const word typeName;
89 //- Construct from components
92 const volScalarField& rho,
93 const volVectorField& U,
94 const surfaceScalarField& phi,
95 const basicThermo& thermoPhysicalModel,
96 const word& turbulenceModelName = turbulenceModel::typeName,
97 const word& modelName = typeName
102 virtual ~GenEddyVisc()
108 //- Return sub-grid disipation rate
109 virtual tmp<volScalarField> epsilon() const
111 return ce_*k()*sqrt(k())/delta();
115 virtual tmp<volScalarField> muSgs() const
120 //- Return thermal diffusivity
121 virtual tmp<volScalarField> alphaSgs() const
126 //- Return the sub-grid stress tensor.
127 virtual tmp<volSymmTensorField> B() const;
129 //- Return the deviatoric part of the effective sub-grid
130 // turbulence stress tensor including the laminar stress
131 virtual tmp<volSymmTensorField> devRhoBeff() const;
133 //- Returns div(rho*dev(B)).
134 // This is the additional term due to the filtering of the NSE.
135 virtual tmp<fvVectorMatrix> divDevRhoBeff(volVectorField& U) const;
137 //- Correct Eddy-Viscosity and related properties
138 virtual void correct(const tmp<volTensorField>& gradU);
140 //- Read LESProperties dictionary
145 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
147 } // End namespace LESModels
148 } // End namespace compressible
149 } // End namespace Foam
151 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
155 // ************************************************************************* //