foam-extend4.1-coherent-io/applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/viscosityModel/Gidaspow/GidaspowViscosity.C

/*---------------------------------------------------------------------------*\
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   \\    /   O peration     | Version:     4.1
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#include "GidaspowViscosity.H"
#include "mathematicalConstants.H"
#include "addToRunTimeSelectionTable.H"

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

namespace Foam
{
namespace kineticTheoryModels
{
    defineTypeNameAndDebug(GidaspowViscosity, 0);
    addToRunTimeSelectionTable(viscosityModel, GidaspowViscosity, dictionary);
}
}


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

Foam::kineticTheoryModels::GidaspowViscosity::GidaspowViscosity
(
    const dictionary& dict
)
:
    viscosityModel(dict)
{}


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

Foam::kineticTheoryModels::GidaspowViscosity::~GidaspowViscosity()
{}


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

Foam::tmp<Foam::volScalarField>
Foam::kineticTheoryModels::GidaspowViscosity::mua
(
    const volScalarField& alpha,
    const volScalarField& Theta,
    const volScalarField& g0,
    const dimensionedScalar& rhoa,
    const dimensionedScalar& da,
    const dimensionedScalar& e
) const
{
    const scalar sqrtPi = sqrt(mathematicalConstant::pi);

    return rhoa*da*sqrt(Theta)*
    (
        (4.0/5.0)*sqr(alpha)*g0*(1.0 + e)/sqrtPi
      + (1.0/15.0)*sqrtPi*g0*(1.0 + e)*sqr(alpha)
      + (1.0/6.0)*sqrtPi*alpha
      + (10.0/96.0)*sqrtPi/((1.0 + e)*g0)
    );
}


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