LehrMilliesMewesCoalescence.C

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#include "LehrMilliesMewesCoalescence.H"
#include "phaseCompressibleMomentumTransportModel.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace diameterModels
{
namespace coalescenceModels
{
    defineTypeNameAndDebug(LehrMilliesMewesCoalescence, 0);
    addToRunTimeSelectionTable
    (
        coalescenceModel,
        LehrMilliesMewesCoalescence,
        dictionary
    );
}
}
}
 
using Foam::constant::mathematical::pi;
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::diameterModels::coalescenceModels::LehrMilliesMewesCoalescence::
LehrMilliesMewesCoalescence
(
    const populationBalanceModel& popBal,
    const dictionary& dict
)
:
    coalescenceModel(popBal, dict),
    uCrit_("uCrit", dimVelocity, dict, 0.08),
    alphaMax_("alphaMax", dimless, dict, 0.6)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::diameterModels::coalescenceModels::LehrMilliesMewesCoalescence::
addToCoalescenceRate
(
    volScalarField::Internal& coalescenceRate,
    const label i,
    const label j
)
{
    const sizeGroup& fi = popBal_.sizeGroups()[i];
    const sizeGroup& fj = popBal_.sizeGroups()[j];
 
    tmp<volScalarField> tepsilonc(popBal_.continuousTurbulence().epsilon());
    const volScalarField::Internal& epsilonc = tepsilonc();
 
    const volScalarField::Internal uChar
    (
        max
        (
            sqrt(2.0)
           *cbrt(epsilonc)
           *sqrt(cbrt(sqr(fi.dSph())) + cbrt(sqr(fj.dSph()))),
            mag(fi.phase().U()()() - fj.phase().U()()())
        )
    );
 
    coalescenceRate +=
        pi/4
       *sqr(fi.dSph() + fj.dSph())
       *min(uChar, uCrit_)
       *exp
        (
          - sqr(cbrt(alphaMax_)
           /cbrt(max(popBal_.alphas()(), fi.phase().residualAlpha())) - 1)
        );
}
 
 
// ************************************************************************* //