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JohnsonJackson.C
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JohnsonJackson.C
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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part 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 "JohnsonJackson.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
defineTypeNameAndDebug(JohnsonJackson, 0);
addToRunTimeSelectionTable
(
ppModel,
JohnsonJackson,
dictionary
);
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::JohnsonJackson::JohnsonJackson
(
const dictionary& ppDict,
const phaseModel& phasea,
const phaseModel& phaseb
)
:
ppModel(ppDict, phasea, phaseb)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::JohnsonJackson::~JohnsonJackson()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::tmp<Foam::volScalarField> Foam::JohnsonJackson::pff
(
const volScalarField& alpha_,
const volScalarField& alphaMinFriction,
const dimensionedScalar& alphaMax,
const dimensionedScalar& Fr,
const dimensionedScalar& eta0,
const dimensionedScalar& eta1
) const
{
// limiting parameter : 1e-3 because :
// max(pff)=Fr * (0.625-0.53)^3/limiteur^5
// limiteur =(Fr (0.625-0.53)^3/max(pff))^(1/5)
// with max(pff)=0.6(rhop-rhof)max(hbed)
// limiteur =0.05
return Fr*pow(max(alpha_ - alphaMinFriction, scalar(0)), eta0)
/pow(max(alphaMax - alpha_, scalar(1.0e-3)), eta1);
}
// ************************************************************************* //