1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | foam-extend: Open Source CFD
4 \\ / O peration | Version: 3.2
5 \\ / A nd | Web: http://www.foam-extend.org
6 \\/ M anipulation | For copyright notice see file Copyright
7 -------------------------------------------------------------------------------
9 This file is part of foam-extend.
11 foam-extend is free software: you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by the
13 Free Software Foundation, either version 3 of the License, or (at your
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16 foam-extend is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
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19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
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25 Foam::incompressible::LESModels::GenEddyVisc
28 General base class for all incompressible models that can be implemented
29 as 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 \*---------------------------------------------------------------------------*/
44 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
48 namespace incompressible
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&);
70 dimensionedScalar ce_;
72 volScalarField nuSgs_;
79 //- Construct from components
82 const volVectorField& U,
83 const surfaceScalarField& phi,
84 transportModel& transport
89 virtual ~GenEddyVisc()
95 //- Return SGS kinetic energy
96 virtual tmp<volScalarField> k() const = 0;
98 //- Return sub-grid disipation rate
99 virtual tmp<volScalarField> epsilon() const
101 return ce_*k()*sqrt(k())/delta();
104 //- Return the SGS viscosity.
105 virtual tmp<volScalarField> nuSgs() const
110 //- Return the sub-grid stress tensor.
111 virtual tmp<volSymmTensorField> B() const;
113 //- Return the effective sub-grid turbulence stress tensor
114 // including the laminar stress
115 virtual tmp<volSymmTensorField> devBeff() const;
117 //- Return the deviatoric part of the effective sub-grid
118 // turbulence stress tensor including the laminar stress
119 virtual tmp<fvVectorMatrix> divDevBeff(volVectorField& U) const;
121 //- Correct Eddy-Viscosity and related properties
122 virtual void correct(const tmp<volTensorField>& gradU);
124 //- Read LESProperties dictionary
129 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
131 } // End namespace LESModels
132 } // End namespace incompressible
133 } // End namespace Foam
135 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
139 // ************************************************************************* //