basic.C

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    Copyright (C) 2023 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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#include "basic.H"
#include "addToRunTimeSelectionTable.H"

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

namespace Foam
{
namespace PDRDragModels
{
    defineTypeNameAndDebug(basic, 0);
    addToRunTimeSelectionTable(PDRDragModel, basic, dictionary);
}
}


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

Foam::PDRDragModels::basic::basic
(
    const dictionary& PDRProperties,
    const compressible::RASModel& turbulence,
    const volScalarField& rho,
    const volVectorField& U,
    const surfaceScalarField& phi
)
:
    PDRDragModel(PDRProperties, turbulence, rho, U, phi),
    Csu("Csu", dimless, PDRDragModelCoeffs_),
    Csk("Csk", dimless, PDRDragModelCoeffs_),

    Aw_
    (
        IOobject
        (
            "Aw",
            U_.mesh().facesInstance(),
            U_.mesh(),
            IOobject::MUST_READ,
            IOobject::NO_WRITE
        ),
        U_.mesh()
    ),

    CR_
    (
        IOobject
        (
            "CR",
            U_.mesh().facesInstance(),
            U_.mesh(),
            IOobject::MUST_READ,
            IOobject::NO_WRITE
        ),
        U_.mesh()
    )
{}


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

Foam::PDRDragModels::basic::~basic()
{}


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

Foam::tmp<Foam::volSymmTensorField> Foam::PDRDragModels::basic::Dcu() const
{
    auto tDragDcu = volSymmTensorField::New
    (
        "tDragDcu",
        IOobject::NO_REGISTER,
        U_.mesh(),
        dimensionedSymmTensor(dimMass/dimTime/dimVolume, Zero)
    );
    auto& DragDcu = tDragDcu.ref();

    if (on_)
    {
        const volScalarField& betav =
            U_.db().lookupObject<volScalarField>("betav");

        DragDcu =
            (0.5*rho_)*CR_*mag(U_) + (Csu*I)*betav*turbulence_.muEff()*sqr(Aw_);
    }

    return tDragDcu;
}


Foam::tmp<Foam::volScalarField> Foam::PDRDragModels::basic::Gk() const
{
    auto tGk = volScalarField::New
    (
        "tGk",
        IOobject::NO_REGISTER,
        U_.mesh(),
        dimensionedScalar(dimMass/dimLength/pow3(dimTime), Zero)
    );
    auto& Gk = tGk.ref();

    if (on_)
    {
        const volScalarField& betav =
            U_.db().lookupObject<volScalarField>("betav");

        const volSymmTensorField& CT =
            U_.db().lookupObject<volSymmTensorField>("CT");

        Gk =
            (0.5*rho_)*mag(U_)*(U_ & CT & U_)
          + Csk*betav*turbulence_.muEff()*sqr(Aw_)*magSqr(U_);
    }

    return tGk;
}


bool Foam::PDRDragModels::basic::read(const dictionary& PDRProperties)
{
    PDRDragModel::read(PDRProperties);

    PDRDragModelCoeffs_.readEntry("Csu", Csu.value());
    PDRDragModelCoeffs_.readEntry("Csk", Csk.value());

    return true;
}


void Foam::PDRDragModels::basic::writeFields() const
{
    Aw_.write();
    CR_.write();
}

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