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src
turbulenceModels
incompressible
LES
GenSGSStress
GenSGSStress.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 <
incompressibleLESModels/GenSGSStress.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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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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GenSGSStress::GenSGSStress
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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(
word
(
"GenSGSStress"
), U, phi, transport),
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ce_
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(
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dimensioned<scalar>::lookupOrAddToDict
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(
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"ce"
,
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coeffDict_,
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1.048
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)
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),
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couplingFactor_
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(
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dimensioned<scalar>::lookupOrAddToDict
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(
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"couplingFactor"
,
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coeffDict_,
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0.0
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)
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),
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B_
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(
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IOobject
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(
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"B"
,
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runTime_.timeName(),
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mesh_,
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IOobject::MUST_READ
,
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IOobject::AUTO_WRITE
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),
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mesh_
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),
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nuSgs_
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(
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IOobject
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(
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"nuSgs"
,
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runTime_.timeName(),
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mesh_,
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IOobject::NO_READ
,
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IOobject::NO_WRITE
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),
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nu
(),
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B_.boundaryField().types()
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)
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{
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if
(couplingFactor_.value() < 0.0 || couplingFactor_.value() > 1.0)
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{
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FatalErrorIn
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(
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"GenSGSStress::GenSGSStress"
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"(const volVectorField& U, const surfaceScalarField& phi,"
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"transportModel& lamTransportModel)"
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) <<
"couplingFactor = "
<< couplingFactor_
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<<
" is not in range 0 - 1"
<<
nl
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<<
exit
(
FatalError
);
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}
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}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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tmp<volSymmTensorField>
GenSGSStress::devBeff
()
const
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{
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return
tmp<volSymmTensorField>
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(
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new
volSymmTensorField
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(
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IOobject
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(
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"devRhoReff"
,
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runTime_
.
timeName
(),
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mesh_
,
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IOobject::NO_READ
,
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IOobject::NO_WRITE
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),
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B_
-
nu
()*
dev
(
twoSymm
(
fvc::grad
(
U
())))
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)
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);
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}
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tmp<fvVectorMatrix>
GenSGSStress::divDevBeff
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(
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volVectorField
& U
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)
const
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{
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if
(couplingFactor_.value() > 0.0)
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{
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return
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(
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fvc::div
(B_ + couplingFactor_*nuSgs_*
fvc::grad
(U))
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+
fvc::laplacian
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(
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(1.0 - couplingFactor_)*nuSgs_, U,
"laplacian(nuEff,U)"
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)
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-
fvm::laplacian
(nuEff(), U)
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);
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}
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else
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{
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return
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(
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fvc::div
(B_)
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+
fvc::laplacian
(nuSgs_, U,
"laplacian(nuEff,U)"
)
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-
fvm::laplacian
(nuEff(), U)
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);
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}
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}
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bool
GenSGSStress::read
()
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{
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if
(LESModel::read())
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{
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ce_
.
readIfPresent
(
coeffDict
());
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couplingFactor_
.
readIfPresent
(
coeffDict
());
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if
(
couplingFactor_
.
value
() < 0.0 ||
couplingFactor_
.
value
() > 1.0)
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{
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FatalErrorIn
(
"GenSGSStress::read()"
)
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<<
"couplingFactor = "
<<
couplingFactor_
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<<
" is not in range 0 - 1"
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<<
exit
(
FatalError
);
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}
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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: ************************ //