LESeddyViscosity.C

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    Copyright (C) 2013-2017 OpenFOAM Foundation
    Copyright (C) 2016-2020 OpenCFD Ltd.
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    This file is part of OpenFOAM.
 
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#include "LESeddyViscosity.H"
#include "zeroGradientFvPatchField.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace LESModels
{
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<class BasicTurbulenceModel>
LESeddyViscosity<BasicTurbulenceModel>::LESeddyViscosity
(
    const word& type,
    const alphaField& alpha,
    const rhoField& rho,
    const volVectorField& U,
    const surfaceScalarField& alphaRhoPhi,
    const surfaceScalarField& phi,
    const transportModel& transport,
    const word& propertiesName
)
:
    eddyViscosity<LESModel<BasicTurbulenceModel>>
    (
        type,
        alpha,
        rho,
        U,
        alphaRhoPhi,
        phi,
        transport,
        propertiesName
    ),
 
    Ce_
    (
        dimensioned<scalar>::getOrAddToDict
        (
            "Ce",
            this->coeffDict_,
            1.048
        )
    )
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class BasicTurbulenceModel>
bool LESeddyViscosity<BasicTurbulenceModel>::read()
{
    if (eddyViscosity<LESModel<BasicTurbulenceModel>>::read())
    {
        Ce_.readIfPresent(this->coeffDict());
 
        return true;
    }
 
    return false;
}
 
 
template<class BasicTurbulenceModel>
tmp<volScalarField> LESeddyViscosity<BasicTurbulenceModel>::epsilon() const
{
    tmp<volScalarField> tk(this->k());
 
    tmp<volScalarField> tepsilon
    (
        new volScalarField
        (
            IOobject
            (
                IOobject::groupName("epsilon", this->alphaRhoPhi_.group()),
                this->runTime_.timeName(),
                this->mesh_,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            Ce_*tk()*sqrt(tk())/this->delta(),
            zeroGradientFvPatchField<scalar>::typeName
        )
    );
    volScalarField& epsilon = tepsilon.ref();
    epsilon.correctBoundaryConditions();
 
    return tepsilon;
}
 
 
template<class BasicTurbulenceModel>
tmp<volScalarField> LESeddyViscosity<BasicTurbulenceModel>::omega() const
{
    tmp<volScalarField> tk(this->k());
    tmp<volScalarField> tepsilon(this->epsilon());
 
    auto tomega = tmp<volScalarField>::New
    (
        IOobject
        (
            IOobject::groupName("omega", this->alphaRhoPhi_.group()),
            this->runTime_.timeName(),
            this->mesh_
        ),
        tepsilon()/(0.09*tk())
    );
    auto& omega = tomega.ref();
    omega.correctBoundaryConditions();
 
    return tomega;
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace LESModels
} // End namespace Foam
 
// ************************************************************************* //