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AyaziShamlou.C
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AyaziShamlou.C
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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015 Alberto Passalacqua
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is derivative work of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "AyaziShamlou.H"
#include "addToRunTimeSelectionTable.H"
#include "turbulentFluidThermoModel.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace populationBalanceSubModels
{
namespace breakupKernels
{
defineTypeNameAndDebug(AyaziShamlou, 0);
addToRunTimeSelectionTable
(
breakupKernel,
AyaziShamlou,
dictionary
);
}
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::populationBalanceSubModels::breakupKernels::AyaziShamlou
::AyaziShamlou
(
const dictionary& dict
)
:
breakupKernel(dict),
A_(dict.lookup("A")),
df_(dict.lookup("df")),
H0_(dict.lookup("H0")),
primarySize_(dict.lookup("primarySize"))
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::populationBalanceSubModels::breakupKernels::AyaziShamlou::~AyaziShamlou()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::tmp<Foam::volScalarField>
Foam::populationBalanceSubModels::breakupKernels::AyaziShamlou::Kb
(
const volScalarField& abscissa
) const
{
if (!abscissa.db().foundObject<fluidThermo>(basicThermo::dictName))
{
FatalErrorInFunction
<< "No valid thermophysical model found."
<< abort(FatalError);
}
const fluidThermo& flThermo =
abscissa.db().lookupObject<fluidThermo>(basicThermo::dictName);
typedef compressible::turbulenceModel cmpTurbModel;
if
(
!abscissa.mesh().time().db().foundObject<cmpTurbModel>
(
cmpTurbModel::propertiesName
)
)
{
FatalErrorInFunction
<< "No valid compressible turbulence model found."
<< abort(FatalError);
}
const cmpTurbModel& flTurb =
abscissa.mesh().time().db().lookupObject<cmpTurbModel>
(
turbulenceModel::propertiesName
);
// Interparticle force
dimensionedScalar F = A_*primarySize_/(12.0*sqr(H0_));
// Coefficient of volume fraction (Vanni, 2000)
dimensionedScalar C = 0.41*df_ - 0.211;
// Volume fraction of solid within aggregates
volScalarField phiL(C*pow(abscissa/primarySize_, df_ - 3.0));
// Coordination number
volScalarField kc(15.0*pow(phiL, 1.2));
// Aggregation strength
volScalarField sigma(9.0*kc*phiL*F/(8.0*sqr(primarySize_)
*Foam::constant::mathematical::pi));
volScalarField epsilonByNu(flTurb.epsilon()/flThermo.nu());
volScalarField tau = flThermo.mu()*sqrt(epsilonByNu);
return sqrt(epsilonByNu/15.0)*exp(-sigma/tau);
}
// ************************************************************************* //