Luo.C

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#include "Luo.H"
#include "phaseSystem.H"
#include "phaseCompressibleMomentumTransportModel.H"
#include "dispersedVirtualMassModel.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace diameterModels
{
namespace coalescenceModels
{
    defineTypeNameAndDebug(Luo, 0);
    addToRunTimeSelectionTable
    (
        coalescenceModel,
        Luo,
        dictionary
    );
}
}
}
 
using Foam::constant::mathematical::pi;
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::diameterModels::coalescenceModels::Luo::
Luo
(
    const populationBalanceModel& popBal,
    const dictionary& dict
)
:
    coalescenceModel(popBal, dict),
    beta_("beta", dimless, dict, 2.05),
    C1_("C1", dimless, dict, 1)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::diameterModels::coalescenceModels::Luo::addToCoalescenceRate
(
    volScalarField::Internal& coalescenceRate,
    const label i,
    const label j
)
{
    const sizeGroup& fi = popBal_.sizeGroups()[i];
    const sizeGroup& fj = popBal_.sizeGroups()[j];
 
    const volScalarField::Internal& rhoc = popBal_.continuousPhase().rho();
 
    tmp<volScalarField> tsigma(popBal_.sigmaWithContinuousPhase(fi.phase()));
    const volScalarField::Internal& sigma = tsigma();
 
    if
    (
        popBal_.fluid().foundInterfacialModel
        <
            virtualMassModels::dispersedVirtualMassModel
        >
        (
            dispersedPhaseInterface(fi.phase(), popBal_.continuousPhase())
        )
    )
    {
        tmp<volScalarField> tCvm =
            popBal_.fluid().lookupInterfacialModel
            <
                virtualMassModels::dispersedVirtualMassModel
            >
            (
                dispersedPhaseInterface(fi.phase(), popBal_.continuousPhase())
            ).Cvm();
        const volScalarField::Internal& Cvm = tCvm();
 
        tmp<volScalarField> tepsilonc(popBal_.continuousTurbulence().epsilon());
        const volScalarField::Internal& epsilonc = tepsilonc();
 
        const dimensionedScalar xi = fi.dSph()/fj.dSph();
 
        const volScalarField::Internal uij
        (
            sqrt(beta_)*cbrt(epsilonc*fi.dSph())*sqrt(1 + pow(xi, -2.0/3.0))
        );
 
        coalescenceRate +=
            pi/4*sqr(fi.dSph() + fj.dSph())*uij
           *exp
            (
              - C1_
               *sqrt(0.75*(1 + sqr(xi))*(1 + pow3(xi)))
               /(sqrt(fi.phase().rho()()/rhoc + Cvm)*pow3(1 + xi))
               *sqrt(rhoc*fi.dSph()*sqr(uij)/sigma)
            );
    }
    else
    {
        FatalErrorInFunction
            << "A virtual mass model for " << fi.phase().name() << " in "
            << popBal_.continuousPhase().name() << " is not specified. This is "
            << "required by the Luo coalescence model." << exit(FatalError);
    }
}
 
 
// ************************************************************************* //