diffusion.C

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#include "diffusion.H"
#include "fvcGrad.H"
#include "addToRunTimeSelectionTable.H"
 
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace combustionModels
{
    defineTypeNameAndDebug(diffusion, 0);
    addToRunTimeSelectionTable(combustionModel, diffusion, dictionary);
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::combustionModels::diffusion::diffusion
(
    const word& modelType,
    const fluidMulticomponentThermo& thermo,
    const compressibleMomentumTransportModel& turb,
    const word& combustionProperties
)
:
    singleStepCombustion
    (
        modelType,
        thermo,
        turb,
        combustionProperties
    ),
    C_(this->coeffs().template lookup<scalar>("C")),
    oxidantName_(this->coeffs().template lookupOrDefault<word>("oxidant", "O2"))
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::combustionModels::diffusion::~diffusion()
{}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
void Foam::combustionModels::diffusion::correct()
{
    this->wFuel_ ==
        dimensionedScalar(dimMass/pow3(dimLength)/dimTime, 0);
 
    this->fresCorrect();
 
    const label fuelI = this->fuelIndex();
 
    const volScalarField& YFuel = this->thermo().composition().Y()[fuelI];
 
    if (this->thermo().composition().contains(oxidantName_))
    {
        const volScalarField& YO2 =
            this->thermo().composition().Y(oxidantName_);
 
        this->wFuel_ ==
            C_*this->thermo().rho()*this->turbulence().nuEff()
           *mag(fvc::grad(YFuel) & fvc::grad(YO2))
           *pos0(YFuel)*pos0(YO2);
    }
}
 
 
bool Foam::combustionModels::diffusion::read()
{
    if (singleStepCombustion::read())
    {
        this->coeffs().lookup("C") >> C_ ;
        this->coeffs().readIfPresent("oxidant", oxidantName_);
        return true;
    }
    else
    {
        return false;
    }
}
 
 
// ************************************************************************* //