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  ==  == ====== ====   ====    |
                    \\     ||  | Multiphase Code Repository by HZDR
  ======   //   ||  || ===//   | Website: https://doi.org/10.14278/rodare.767
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License
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    Website: https://hzdr.de

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#include "ShiRzehakTurbulentDispersion.H"
#include "dispersedDragModel.H"
#include "dispersedVirtualMassModel.H"
#include "addToRunTimeSelectionTable.H"
#include "fvcSnGrad.H"

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

namespace Foam
{
namespace turbulentDispersionModels
{
    defineTypeNameAndDebug(ShiRzehakTurbulentDispersion, 0);
    addToRunTimeSelectionTable
    (
        turbulentDispersionModel,
        ShiRzehakTurbulentDispersion,
        dictionary
    );
}
}


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

Foam::turbulentDispersionModels::ShiRzehakTurbulentDispersion::
ShiRzehakTurbulentDispersion
(
    const dictionary& dict,
    const phaseInterface& interface
)
:
    dispersedTurbulentDispersionModel(dict, interface),
    CT_("CT", dimless, dict, 0.224),
    CLambda_("CLambda", dimless, dict, 0.234)
{}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

Foam::turbulentDispersionModels::ShiRzehakTurbulentDispersion::
~ShiRzehakTurbulentDispersion()
{}


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

Foam::tmp<Foam::volScalarField>
Foam::turbulentDispersionModels::ShiRzehakTurbulentDispersion::D() const
{
    const dragModels::dispersedDragModel& drag =
        refCast<const dragModels::dispersedDragModel>
        (
            interface_.mesh().lookupObject<dragModel>
            (
                IOobject::groupName(dragModel::typeName, interface_.name())
            )
        );

    return
        drag.Ki()
       *continuousTurbulence().nut()
       /(1 + interface_.St(CT_, CLambda_))
       *interface_.dispersed();
}


Foam::tmp<Foam::surfaceScalarField>
Foam::turbulentDispersionModels::ShiRzehakTurbulentDispersion::Ff() const
{
    const surfaceScalarField snGradAlphaByAlphaDifference
    (
        fvc::snGrad(interface_.dispersed())
       /max
        (
            fvc::interpolate(interface_.dispersed()),
            interface_.dispersed().residualAlpha()
        )
      - fvc::snGrad(interface_.continuous())
       /max
        (
            fvc::interpolate(interface_.continuous()),
            interface_.continuous().residualAlpha()
        )
    );

    return
        interface_.sign()*fvc::interpolate(D())*snGradAlphaByAlphaDifference
       *interface_.mesh().magSf();
}


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