randomCoalescence.C

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    Copyright (C) 2013-2018 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.
 
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#include "randomCoalescence.H"
#include "fvmSup.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::fvScalarMatrix>
Foam::diameterModels::IATEsources::randomCoalescence::R
(
    const volScalarField& alphai,
    volScalarField& kappai
) const
{
    volScalarField::Internal R
    (
        IOobject
        (
            "randomCoalescence:R",
            iate_.phase().time().timeName(),
            iate_.phase().mesh()
        ),
        iate_.phase().mesh(),
        dimensionedScalar(dimless/dimTime)
    );
 
    const scalar Crc = Crc_.value();
    const scalar C = C_.value();
    const scalar alphaMax = alphaMax_.value();
    const volScalarField Ut(this->Ut());
    const volScalarField& alpha = phase();
    const scalar cbrtAlphaMax = cbrt(alphaMax);
 
    forAll(R, celli)
    {
        if (alpha[celli] < alphaMax - SMALL)
        {
            const 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 -fvm::Sp(R, kappai);
}
 
 
// ************************************************************************* //