Zuber.C

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    Copyright (C) 2018-2020 OpenCFD Ltd
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License
    This file is part of OpenFOAM.
 
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#include "Zuber.H"
#include "addToRunTimeSelectionTable.H"
#include "uniformDimensionedFields.H"
#include "phasePairKey.H"
#include "phaseSystem.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace wallBoilingModels
{
namespace CHFModels
{
    defineTypeNameAndDebug(Zuber, 0);
    addToRunTimeSelectionTable
    (
        CHFModel,
        Zuber,
        dictionary
    );
}
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::wallBoilingModels::CHFModels::Zuber::Zuber
(
    const dictionary& dict
)
:
    CHFModel(),
    Cn_(dict.getOrDefault<scalar>("Cn", 0.131))
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::wallBoilingModels::CHFModels::Zuber::~Zuber()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::tmp<Foam::scalarField>
Foam::wallBoilingModels::CHFModels::Zuber::CHF
(
    const phaseModel& liquid,
    const phaseModel& vapor,
    const label patchi,
    const scalarField& Tl,
    const scalarField& Tsatw,
    const scalarField& L
) const
{
    const uniformDimensionedVectorField& g =
        liquid.mesh().time().lookupObject<uniformDimensionedVectorField>("g");
 
    const scalarField rhoVapor(vapor.thermo().rho(patchi));
    const scalarField rhoLiq(liquid.thermo().rho(patchi));
 
    const phasePairKey pair(liquid.name(), vapor.name());
    const scalarField sigma
    (
        liquid.fluid().sigma(pair)().boundaryField()[patchi]
    );
 
    return
        Cn_*rhoVapor*L*pow
        (
            sigma*mag(g.value())*(max(rhoLiq - rhoVapor, Zero)/sqr(rhoVapor)),
            0.25
        );
}
 
 
void Foam::wallBoilingModels::CHFModels::Zuber::write(Ostream& os) const
{
    CHFModel::write(os);
    os.writeEntry("Cn", Cn_);
}
 
 
// ************************************************************************* //