KochFriedlander.C

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#include "KochFriedlander.H"
#include "addToRunTimeSelectionTable.H"
#include "fvmSup.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace diameterModels
{
namespace shapeModels
{
namespace sinteringModels
{
    defineTypeNameAndDebug(KochFriedlander, 0);
    addToRunTimeSelectionTable(sinteringModel, KochFriedlander, dictionary);
}
}
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::diameterModels::shapeModels::sinteringModels::KochFriedlander::
KochFriedlander
(
    const dictionary& dict,
    const fractal& fractalShape
)
:
    sinteringModel(dict, fractalShape),
    dict_(dict.subDict(type() + "Coeffs")),
    Cs_(dict_.lookup<scalar>("Cs")),
    n_(dict_.lookup<scalar>("n")),
    m_(dict_.lookup<scalar>("m")),
    Ta_(dict_.lookup<scalar>("Ta")),
    dpMin_(dict_.lookupOrDefault<scalar>("dpMin", 0))
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::diameterModels::shapeModels::sinteringModels::KochFriedlander::
~KochFriedlander()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::tmp<Foam::volScalarField::Internal>
Foam::diameterModels::shapeModels::sinteringModels::KochFriedlander::tau() const
{
    tmp<volScalarField::Internal> tTau
    (
        volScalarField::Internal::New
        (
            "tau",
            fractal_.SizeGroup().mesh(),
            dimensionedScalar(dimTime, Zero)
        )
    );
 
    volScalarField::Internal& tau = tTau.ref();
 
    const sizeGroup& fi = fractal_.SizeGroup();
    const volScalarField& kappai = fractal_.fld();
    const volScalarField& T = fractal_.SizeGroup().phase().thermo().T();
 
    forAll(tau, celli)
    {
        const scalar dp = 6/max(6/fi.dSph().value(), kappai[celli]);
 
        tau[celli] =
            Cs_*pow(dp, n_)*pow(T[celli], m_)*exp(Ta_/T[celli]*(1 - dpMin_/dp));
    }
 
    return tTau;
}
 
 
Foam::tmp<Foam::fvScalarMatrix>
Foam::diameterModels::shapeModels::sinteringModels::KochFriedlander::R() const
{
    const sizeGroup& fi = fractal_.SizeGroup();
    const volScalarField& kappai = fractal_.fld();
    const volScalarField& alpha = fi.phase();
 
    volScalarField::Internal R
    (
        IOobject
        (
            typedName("R"),
            fi.time().name(),
            fi.mesh()
        ),
        fi.mesh(),
        dimensionedScalar(inv(dimTime), Zero)
    );
 
    volScalarField::Internal tau(this->tau());
 
    forAll(R, celli)
    {
        R[celli] = fi[celli]*alpha[celli]/tau[celli];
    }
 
    return fvm::Sp(R, kappai) - 6/fi.dSph()*R;
}
 
 
// ************************************************************************* //