1 /*---------------------------------------------------------------------------*\
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5 \\ / A nd | Copyright (C) 2004-2011 OpenCFD Ltd.
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25 Foam::incompressible::RASModels::LaunderSharmaKE
28 Launder and Sharma low-Reynolds k-epsilon turbulence model for
31 The default model coefficients correspond to the following:
46 \*---------------------------------------------------------------------------*/
48 #ifndef LaunderSharmaKE_H
49 #define LaunderSharmaKE_H
53 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
57 namespace incompressible
62 /*---------------------------------------------------------------------------*\
63 Class LaunderSharmaKE Declaration
64 \*---------------------------------------------------------------------------*/
77 dimensionedScalar Cmu_;
78 dimensionedScalar C1_;
79 dimensionedScalar C2_;
80 dimensionedScalar sigmaEps_;
86 volScalarField epsilonTilda_;
90 // Protected Member Functions
92 tmp<volScalarField> fMu() const;
93 tmp<volScalarField> f2() const;
98 //- Runtime type information
99 TypeName("LaunderSharmaKE");
103 //- Construct from components
106 const volVectorField& U,
107 const surfaceScalarField& phi,
108 transportModel& transport,
109 const word& turbulenceModelName = turbulenceModel::typeName,
110 const word& modelName = typeName
115 virtual ~LaunderSharmaKE()
121 //- Return the turbulence viscosity
122 virtual tmp<volScalarField> nut() const
127 //- Return the effective diffusivity for k
128 tmp<volScalarField> DkEff() const
130 return tmp<volScalarField>
132 new volScalarField("DkEff", nut_ + nu())
136 //- Return the effective diffusivity for epsilon
137 tmp<volScalarField> DepsilonEff() const
139 return tmp<volScalarField>
141 new volScalarField("DepsilonEff", nut_/sigmaEps_ + nu())
145 //- Return the turbulence kinetic energy
146 virtual tmp<volScalarField> k() const
151 //- Note that epsilonTilda is returned as epsilon.
152 // This is the appropriate variable for most purposes.
153 virtual tmp<volScalarField> epsilon() const
155 return epsilonTilda_;
158 //- Return the Reynolds stress tensor
159 virtual tmp<volSymmTensorField> R() const;
161 //- Return the effective stress tensor including the laminar stress
162 virtual tmp<volSymmTensorField> devReff() const;
164 //- Return the source term for the momentum equation
165 virtual tmp<fvVectorMatrix> divDevReff(volVectorField& U) const;
167 //- Solve the turbulence equations and correct the turbulence viscosity
168 virtual void correct();
170 //- Read RASProperties dictionary
175 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
177 } // End namespace RASModels
178 } // End namespace incompressible
179 } // End namespace Foam
181 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
185 // ************************************************************************* //