PrandtlDelta.C

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    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2020-2021 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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#include "PrandtlDelta.H"
#include "wallDist.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace LESModels
{
    defineTypeNameAndDebug(PrandtlDelta, 0);
    addToRunTimeSelectionTable(LESdelta, PrandtlDelta, dictionary);
}
}
 
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
void Foam::LESModels::PrandtlDelta::calcDelta()
{
    delta_ = min
    (
        static_cast<const volScalarField&>(geometricDelta_()),
        (kappa_/Cdelta_)*wallDist::New(turbulenceModel_.mesh()).y()
    );
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::LESModels::PrandtlDelta::PrandtlDelta
(
    const word& name,
    const turbulenceModel& turbulence,
    const dictionary& dict
)
:
    LESdelta(name, turbulence),
    geometricDelta_
    (
        LESdelta::New
        (
            IOobject::groupName("geometricDelta", turbulence.U().group()),
            turbulence,
            dict.optionalSubDict(type() + "Coeffs")
        )
    ),
    kappa_(dict.getOrDefault<scalar>("kappa", 0.41)),
    Cdelta_
    (
        dict.optionalSubDict(type() + "Coeffs").getOrDefault<scalar>
        (
            "Cdelta",
            0.158
        )
    )
{
    calcDelta();
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::LESModels::PrandtlDelta::read(const dictionary& dict)
{
    const dictionary& coeffDict(dict.optionalSubDict(type() + "Coeffs"));
 
    geometricDelta_().read(coeffDict);
    dict.readIfPresent<scalar>("kappa", kappa_);
    coeffDict.readIfPresent<scalar>("Cdelta", Cdelta_);
    calcDelta();
}
 
 
void Foam::LESModels::PrandtlDelta::correct()
{
    geometricDelta_().correct();
 
    if (turbulenceModel_.mesh().changing())
    {
        calcDelta();
    }
}
 
 
// ************************************************************************* //