strainRateViscosityModel.C

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#include "strainRateViscosityModel.H"
#include "fvcGrad.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace laminarModels
{
namespace generalisedNewtonianViscosityModels
{
    defineTypeNameAndDebug(strainRateViscosityModel, 0);
}
}
}
 
 
// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
 
Foam::tmp<Foam::volScalarField>
Foam::laminarModels::generalisedNewtonianViscosityModels::
strainRateViscosityModel::strainRate() const
{
    return sqrt(2.0)*mag(symm(fvc::grad(U_)));
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::laminarModels::generalisedNewtonianViscosityModels::
strainRateViscosityModel::strainRateViscosityModel
(
    const dictionary& viscosityProperties,
    const viscosity& viscosity,
    const volVectorField& U
)
:
    generalisedNewtonianViscosityModel(viscosityProperties, viscosity, U),
    nu_
    (
        IOobject
        (
            IOobject::groupName
            (
                typedName("nu"),
                U.group()
            ),
            U.time().name(),
            U.mesh(),
            IOobject::NO_READ,
            IOobject::AUTO_WRITE
        ),
        U.mesh(),
        dimensionedScalar(dimViscosity, 0)
    )
{}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
void Foam::laminarModels::generalisedNewtonianViscosityModels::
strainRateViscosityModel::correct()
{
    nu_ = nu(viscosity_.nu(), strainRate());
}
 
 
// ************************************************************************* //