basic.C

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    \\  /    A nd           | Copyright (C) 2011-2023 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
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    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
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    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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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
{
    tmp<volSymmTensorField> tDragDcu
    (
        volSymmTensorField::New
        (
            "tDragDcu",
            U_.mesh(),
            dimensionedSymmTensor
            (
                dimMass/dimTime/pow(dimLength, 3),
                Zero
            )
        )
    );
 
    volSymmTensorField& DragDcu = tDragDcu.ref();
 
    if (on_)
    {
        const volScalarField& betav =
            U_.db().lookupObject<volScalarField>("betav");
 
        DragDcu =
            rho_*(0.5*CR_*mag(U_) + (Csu*I)*betav*turbulence_.nuEff()*sqr(Aw_));
    }
 
    return tDragDcu;
}
 
 
Foam::tmp<Foam::volScalarField> Foam::PDRDragModels::basic::Gk() const
{
    tmp<volScalarField> tGk
    (
        volScalarField::New
        (
            "tGk",
            U_.mesh(),
            dimensionedScalar(dimMass/dimLength/pow(dimTime, 3), 0)
        )
    );
 
    volScalarField& Gk = tGk.ref();
 
    if (on_)
    {
        const volScalarField& betav =
            U_.db().lookupObject<volScalarField>("betav");
 
        const volSymmTensorField& CT =
            U_.db().lookupObject<volSymmTensorField>("CT");
 
        Gk =
            rho_
           *(
                0.5*mag(U_)*(U_ & CT & U_)
              + Csk*betav*turbulence_.nuEff()*sqr(Aw_)*magSqr(U_)
            );
    }
 
    return tGk;
}
 
 
bool Foam::PDRDragModels::basic::read(const dictionary& PDRProperties)
{
    PDRDragModel::read(PDRProperties);
 
    PDRDragModelCoeffs_.lookup("Csu") >> Csu.value();
    PDRDragModelCoeffs_.lookup("Csk") >> Csk.value();
 
    return true;
}
 
 
void Foam::PDRDragModels::basic::writeFields() const
{
    Aw_.write();
    CR_.write();
}
 
// ************************************************************************* //