Lun.C

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-------------------------------------------------------------------------------
    Copyright (C) 2013-2016 OpenFOAM Foundation
-------------------------------------------------------------------------------
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
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    (at your option) any later version.
 
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    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/>.
 
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#include "Lun.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace ParticleStressModels
{
    defineTypeNameAndDebug(Lun, 0);
 
    addToRunTimeSelectionTable
    (
        ParticleStressModel,
        Lun,
        dictionary
    );
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::ParticleStressModels::Lun::Lun
(
    const dictionary& dict
)
:
    ParticleStressModel(dict),
    e_(dict.get<scalar>("e")),
    eps_(dict.get<scalar>("eps"))
{}
 
 
Foam::ParticleStressModels::Lun::Lun
(
    const Lun& ln
)
:
    ParticleStressModel(ln),
    e_(ln.e_),
    eps_(ln.eps_)
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::ParticleStressModels::Lun::~Lun()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::tmp<Foam::Field<Foam::scalar>>
Foam::ParticleStressModels::Lun::tau
(
    const Field<scalar>& alpha,
    const Field<scalar>& rho,
    const Field<scalar>& uSqr
) const
{
    tmp<Field<scalar>> g0
    (
        0.6
      / max
        (
            1.0 - cbrt(alpha/alphaPacked_),
            max(eps_*(1.0 - alpha), SMALL)
        )
    );
 
    tmp<Field<scalar>> gT(uSqr/3.0);
 
    return alpha*rho*(1.0 + alpha*(1.0 + e_)*g0)*gT;
}
 
 
Foam::tmp<Foam::Field<Foam::scalar>>
Foam::ParticleStressModels::Lun::dTaudTheta
(
    const Field<scalar>& alpha,
    const Field<scalar>& rho,
    const Field<scalar>& uSqr
) const
{
    NotImplemented;
    return nullptr;
}
 
 
// ************************************************************************* //