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  ==  == ====== ====   ====    |
                    \\     ||  | Multiphase Code Repository by HZDR
  ======   //   ||  || ===//   | Website: https://doi.org/10.14278/rodare.767
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-------------------------------------------------------------------------------
License
    This file is part of the Multiphase Code Repository by HZDR.

    Copyright (C) 2025 by Helmholtz-Zentrum Dresden-Rossendorf e.V. (HZDR),
    Website: https://hzdr.de

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    computational fluid dynamics (CFD) from the OpenFOAM Foundation.
    Copyright (C) 2025 by OpenFOAM Foundation, Website: https://openfoam.org

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#include "LiaoLucas.H"
#include "heatTransferSystem.H"
#include "phaseCompressibleMomentumTransportModel.H"
#include "addToRunTimeSelectionTable.H"

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

namespace Foam
{
namespace heatTransferModels
{
    defineTypeNameAndDebug(LiaoLucas, 0);
    addToRunTimeSelectionTable(heatTransferModel, LiaoLucas, dictionary);
}
}

using Foam::constant::mathematical::pi;


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

Foam::heatTransferModels::LiaoLucas::LiaoLucas
(
    const dictionary& dict,
    const phaseInterface& interface,
    const bool registerObject
)
:
    heatTransferModel(dict, interface, registerObject),
    interface_
    (
        interface.modelCast<heatTransferModel, dispersedPhaseInterface>()
    ),
    saturationModel_(saturationTemperatureModel::New(dict))
{}


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

Foam::heatTransferModels::LiaoLucas::~LiaoLucas()
{}


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

Foam::tmp<Foam::volScalarField>
Foam::heatTransferModels::LiaoLucas::K(const scalar residualAlpha) const
{
    const phaseModel& liquid = interface_.continuous();
    const phaseModel& vapor = interface_.dispersed();
    const rhoFluidThermo& lThermo = liquid.fluidThermo();
    const rhoFluidThermo& vThermo = vapor.fluidThermo();
    const phaseSystem& fluid = interface_.continuous().fluid();
    const word volatileSpecie(fluid.lookupOrDefault<word>("volatile", "none"));

    const volScalarField& lEpsilon =
    (
        interface_.mesh().lookupObject<volScalarField>
        (
            IOobject::groupName("epsilon", liquid.name())
        )
    );

    const volScalarField L
    (
        vThermo.ha(vThermo.p(), saturationModel_->Tsat(vThermo.p()))
      - lThermo.ha(lThermo.p(), saturationModel_->Tsat(lThermo.p()))
    );

    const volScalarField Ja
    (
        lThermo.Cp()*lThermo.rho()
       *(lThermo.T() - saturationModel_->Tsat(lThermo.p()))
       /(vThermo.rho()*L)
    );

    const volScalarField alphahe(lThermo.kappa()/lThermo.Cpv());

    const volScalarField Pe
    (
        interface_.magUr()*vapor.d()*lThermo.rho()/alphahe
    );

    const volScalarField tauTurb(sqrt(lThermo.nu()/lEpsilon));

    const volScalarField Nu
    (
        12/pi*Ja
      + 2*sqrt(Pe/pi)
      + 2*vapor.d()/sqrt(pi*alphahe/lThermo.rho()*tauTurb)
    );

    return
        6
       *max(interface_.dispersed(), residualAlpha)
       *interface_.continuous().thermo().kappa()
       *Nu
       /sqr(interface_.dispersed().d());
}


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