brownianCollisions.C

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#include "brownianCollisions.H"
#include "addToRunTimeSelectionTable.H"
#include "fundamentalConstants.H"

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

namespace Foam
{
namespace diameterModels
{
namespace coalescenceModels
{
    defineTypeNameAndDebug(brownianCollisions, 0);
    addToRunTimeSelectionTable
    (
        coalescenceModel,
        brownianCollisions,
        dictionary
    );
}
}
}

using Foam::constant::physicoChemical::k;

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

Foam::diameterModels::coalescenceModels::brownianCollisions::
brownianCollisions
(
    const populationBalanceModel& popBal,
    const dictionary& dict
)
:
    coalescenceModel(popBal, dict)
{}


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

void
Foam::diameterModels::coalescenceModels::brownianCollisions::
addToCoalescenceRate
(
    volScalarField& coalescenceRate,
    const label i,
    const label j
)
{
    const sizeGroup& fi = popBal_.sizeGroups()[i];
    const sizeGroup& fj = popBal_.sizeGroups()[j];

    const volScalarField& T = popBal_.continuousPhase().thermo().T();
    const volScalarField& mu = popBal_.continuousPhase().thermo().mu();

    coalescenceRate +=
        8.0*k*T/(3*mu)*(fi.d() + fj.d())
       *(1.0/fi.d() + 1.0/fj.d());
}


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