densityChange.C

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#include "densityChange.H"
#include "addToRunTimeSelectionTable.H"
#include "phaseSystem.H"
#include "fvcDdt.H"
#include "fvcGrad.H"

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

namespace Foam
{
namespace diameterModels
{
namespace driftModels
{
    defineTypeNameAndDebug(densityChangeDrift, 0);
    addToRunTimeSelectionTable(driftModel, densityChangeDrift, dictionary);
}
}
}


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

Foam::diameterModels::driftModels::densityChangeDrift::densityChangeDrift
(
    const populationBalanceModel& popBal,
    const dictionary& dict
)
:
    driftModel(popBal, dict)
{}


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


void Foam::diameterModels::driftModels::densityChangeDrift::addToDriftRate
(
    volScalarField& driftRate,
    const label i
)
{
    const sizeGroup& fi = popBal_.sizeGroups()[i];
    volScalarField& rho = const_cast<volScalarField&>(fi.phase().rho()());

    driftRate -= (fvc::ddt(rho) + (fvc::grad(rho)&popBal_.U()))
       *popBal_.sizeGroups()[i].x()/rho;
}


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