/*---------------------------------------------------------------------------*\
  =========                 |
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    Copyright (C) 2011-2015 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

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    under the terms of the GNU General Public License as published by
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

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#include "SyamlalRogersOBrienPressure.H"
#include "addToRunTimeSelectionTable.H"

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
namespace kineticTheoryModels
{
namespace granularPressureModels
{
    defineTypeNameAndDebug(SyamlalRogersOBrien, 0);

    addToRunTimeSelectionTable
    (
        granularPressureModel,
        SyamlalRogersOBrien,
        dictionary
    );
}
}
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::kineticTheoryModels::granularPressureModels::SyamlalRogersOBrien::
SyamlalRogersOBrien
(
    const dictionary& dict
)
:
    granularPressureModel(dict)
{}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

Foam::kineticTheoryModels::granularPressureModels::SyamlalRogersOBrien::
~SyamlalRogersOBrien()
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

Foam::tmp<Foam::volScalarField>
Foam::kineticTheoryModels::granularPressureModels::SyamlalRogersOBrien::
granularPressureCoeff
(
    const volScalarField& alpha1,
    const volScalarField& g0,
    const volScalarField& rho1,
    const dimensionedScalar& e
) const
{

    return 2.0*rho1*(1.0 + e)*sqr(alpha1)*g0;
}


Foam::tmp<Foam::volScalarField>
Foam::kineticTheoryModels::granularPressureModels::SyamlalRogersOBrien::
granularPressureCoeffPrime
(
    const volScalarField& alpha1,
    const volScalarField& g0,
    const volScalarField& g0prime,
    const volScalarField& rho1,
    const dimensionedScalar& e
) const
{
    return rho1*alpha1*(1.0 + e)*(4.0*g0 + 2.0*g0prime*alpha1);
}


// ************************************************************************* //