generalizedNewtonian.C

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    Copyright (C) 2020-2021 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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#include "generalizedNewtonian.H"
#include "volFields.H"
#include "surfaceFields.H"
#include "fvcGrad.H"
#include "fvcDiv.H"
#include "fvmLaplacian.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace laminarModels
{
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<class BasicMomentumTransportModel>
generalizedNewtonian<BasicMomentumTransportModel>::generalizedNewtonian
(
    const alphaField& alpha,
    const rhoField& rho,
    const volVectorField& U,
    const surfaceScalarField& alphaRhoPhi,
    const surfaceScalarField& phi,
    const transportModel& transport,
    const word& propertiesName
)
:
    linearViscousStress<laminarModel<BasicMomentumTransportModel>>
    (
        typeName,
        alpha,
        rho,
        U,
        alphaRhoPhi,
        phi,
        transport,
        propertiesName
    ),
 
    viscosityModel_
    (
        generalizedNewtonianViscosityModel::New
        (
            this->coeffDict_
        )
    ),
 
    nu_
    (
        IOobject
        (
            IOobject::groupName("generalizedNewtonian:nu", alphaRhoPhi.group()),
            this->runTime_.timeName(),
            this->mesh_,
            IOobject::NO_READ,
            IOobject::AUTO_WRITE
        ),
        viscosityModel_->nu(this->nu(), strainRate())
    )
{}
 
 
// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
 
template<class BasicMomentumTransportModel>
Foam::tmp<Foam::volScalarField>
generalizedNewtonian<BasicMomentumTransportModel>::strainRate() const
{
    return sqrt(scalar{2})*mag(symm(fvc::grad(this->U())));
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class BasicMomentumTransportModel>
bool generalizedNewtonian<BasicMomentumTransportModel>::read()
{
    viscosityModel_->read(this->coeffDict_);
 
    return true;
}
 
 
template<class BasicMomentumTransportModel>
tmp<volScalarField>
generalizedNewtonian<BasicMomentumTransportModel>::nut() const
{
    return volScalarField::New
    (
        IOobject::groupName("nut", this->alphaRhoPhi_.group()),
        this->mesh_,
        dimensionedScalar(dimViscosity, Zero)
    );
}
 
 
template<class BasicMomentumTransportModel>
tmp<scalarField>
generalizedNewtonian<BasicMomentumTransportModel>::nut
(
    const label patchi
) const
{
    return tmp<scalarField>::New(this->mesh_.boundary()[patchi].size(), Zero);
}
 
 
template<class BasicMomentumTransportModel>
tmp<volScalarField>
generalizedNewtonian<BasicMomentumTransportModel>::nuEff() const
{
    return volScalarField::New
    (
        IOobject::groupName("nuEff", this->alphaRhoPhi_.group()),
        nu_
    );
}
 
 
template<class BasicMomentumTransportModel>
tmp<scalarField>
generalizedNewtonian<BasicMomentumTransportModel>::nuEff
(
    const label patchi
) const
{
    return nu_.boundaryField()[patchi];
}
 
 
template<class BasicMomentumTransportModel>
void generalizedNewtonian<BasicMomentumTransportModel>::correct()
{
    nu_ = viscosityModel_->nu(this->nu(), strainRate());
    laminarModel<BasicMomentumTransportModel>::correct();
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace laminarModels
} // End namespace Foam
 
// ************************************************************************* //