randomCoalescence.C

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    Copyright (C) 2013-2015 OpenFOAM Foundation
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License
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#include "randomCoalescence.H"
#include "addToRunTimeSelectionTable.H"

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

namespace Foam
{
namespace diameterModels
{
namespace IATEsources
{
    defineTypeNameAndDebug(randomCoalescence, 0);
    addToRunTimeSelectionTable(IATEsource, randomCoalescence, dictionary);
}
}
}


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

Foam::diameterModels::IATEsources::randomCoalescence::
randomCoalescence
(
    const IATE& iate,
    const dictionary& dict
)
:
    IATEsource(iate),
    Crc_("Crc", dimless, dict),
    C_("C", dimless, dict),
    alphaMax_("alphaMax", dimless, dict)
{}


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

Foam::tmp<Foam::volScalarField>
Foam::diameterModels::IATEsources::randomCoalescence::R() const
{
    auto tR = volScalarField::New
    (
        "R",
        IOobject::NO_REGISTER,
        iate_.phase().U().mesh(),
        dimensionedScalar(dimless/dimTime, Zero)
    );
    auto& R = tR.ref();

    scalar Crc = Crc_.value();
    scalar C = C_.value();
    scalar alphaMax = alphaMax_.value();
    volScalarField Ut(this->Ut());
    const volScalarField& alpha = phase();
    const volScalarField& kappai = iate_.kappai();
    scalar cbrtAlphaMax = cbrt(alphaMax);

    forAll(R, celli)
    {
        if (alpha[celli] < alphaMax - SMALL)
        {
            scalar cbrtAlphaMaxMAlpha = cbrtAlphaMax - cbrt(alpha[celli]);

            R[celli] =
                (-12)*phi()*kappai[celli]*alpha[celli]
               *Crc
               *Ut[celli]
               *(1 - exp(-C*cbrt(alpha[celli]*alphaMax)/cbrtAlphaMaxMAlpha))
               /(cbrtAlphaMax*cbrtAlphaMaxMAlpha);
        }
    }

    return tR;
}


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