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src
turbulenceModels
incompressible
LES
Smagorinsky2
Smagorinsky2.C
Go to the documentation of this file.
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "
Smagorinsky2.H
"
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#include <
OpenFOAM/addToRunTimeSelectionTable.H
>
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace
Foam
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{
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namespace
incompressible
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{
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namespace
LESModels
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{
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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defineTypeNameAndDebug
(Smagorinsky2, 0);
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addToRunTimeSelectionTable
(LESModel, Smagorinsky2, dictionary);
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Smagorinsky2::Smagorinsky2
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(
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const
volVectorField
&
U
,
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const
surfaceScalarField
&
phi
,
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transportModel
& transport
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)
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:
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LESModel(typeName, U, phi, transport),
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Smagorinsky
(U, phi, transport),
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cD2_
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(
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dimensioned<scalar>::lookupOrAddToDict
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(
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"cD2"
,
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coeffDict_,
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0.02
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)
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)
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{
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printCoeffs();
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}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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// Evaluate B (from the definition of an eddy viscosity model) and
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// return it.
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tmp<volSymmTensorField>
Smagorinsky2::B
()
const
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{
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volSymmTensorField
D =
dev
(
symm
(
fvc::grad
(
U
())));
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return
(((2.0/3.0)*
I
)*
k
() - 2.0*
nuSgs_
*D - (2.0*cD2_)*
delta
()*(D&D));
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}
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tmp<fvVectorMatrix>
Smagorinsky2::divDevBeff
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(
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volVectorField
& U
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)
const
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{
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volTensorField
gradU =
fvc::grad
(U);
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volSymmTensorField
aniNuEff
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(
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"aniNuEff"
,
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I
*nuEff() + cD2_*delta()*
symm
(gradU)
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);
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return
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(
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-
fvm::laplacian
(aniNuEff, U) -
fvc::div
(nuEff()*
dev
(
fvc::grad
(U)().
T
()))
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);
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}
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bool
Smagorinsky2::read
()
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{
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if
(
Smagorinsky::read
())
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{
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cD2.readIfPresent(
coeffDict
());
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return
true
;
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}
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else
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{
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return
false
;
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}
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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}
// End namespace LESModels
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}
// End namespace incompressible
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}
// End namespace Foam
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// ************************ vim: set sw=4 sts=4 et: ************************ //