1 /*---------------------------------------------------------------------------*\
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26 Foam::incompressible::RASModels::RNGkEpsilon
29 Renormalisation group k-epsilon turbulence model for incompressible flows.
31 The default model coefficients correspond to the following:
48 \*---------------------------------------------------------------------------*/
55 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
59 namespace incompressible
64 /*---------------------------------------------------------------------------*\
65 Class RNGkEpsilon Declaration
66 \*---------------------------------------------------------------------------*/
76 dimensionedScalar Cmu_;
77 dimensionedScalar C1_;
78 dimensionedScalar C2_;
79 dimensionedScalar sigmak_;
80 dimensionedScalar sigmaEps_;
81 dimensionedScalar eta0_;
82 dimensionedScalar beta_;
88 volScalarField epsilon_;
94 //- Runtime type information
95 TypeName("RNGkEpsilon");
99 //- Construct from components
102 const volVectorField& U,
103 const surfaceScalarField& phi,
104 transportModel& transport
109 virtual ~RNGkEpsilon()
115 //- Return the turbulence viscosity
116 virtual tmp<volScalarField> nut() const
121 //- Return the effective diffusivity for k
122 tmp<volScalarField> DkEff() const
124 return tmp<volScalarField>
126 new volScalarField("DkEff", nut_/sigmak_ + nu())
130 //- Return the effective diffusivity for epsilon
131 tmp<volScalarField> DepsilonEff() const
133 return tmp<volScalarField>
135 new volScalarField("DepsilonEff", nut_/sigmaEps_ + nu())
139 //- Return the turbulence kinetic energy
140 virtual tmp<volScalarField> k() const
145 //- Return the turbulence kinetic energy dissipation rate
146 virtual tmp<volScalarField> epsilon() const
151 //- Return the Reynolds stress tensor
152 virtual tmp<volSymmTensorField> R() const;
154 //- Return the effective stress tensor including the laminar stress
155 virtual tmp<volSymmTensorField> devReff() const;
157 //- Return the source term for the momentum equation
158 virtual tmp<fvVectorMatrix> divDevReff(volVectorField& U) const;
160 //- Solve the turbulence equations and correct the turbulence viscosity
161 virtual void correct();
163 //- Read RASProperties dictionary
168 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
170 } // End namespace RASModels
171 } // End namespace incompressible
172 } // End namespace Foam
174 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
178 // ************************************************************************* //