diffusion.C

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    Copyright (C) 2019-2020 OpenCFD Ltd.
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#include "diffusion.H"
#include "fvcGrad.H"
 
namespace Foam
{
namespace combustionModels
{
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<class ReactionThermo, class ThermoType>
diffusion<ReactionThermo, ThermoType>::diffusion
(
    const word& modelType,
    ReactionThermo& thermo,
    const compressibleTurbulenceModel& turb,
    const word& combustionProperties
)
:
    singleStepCombustion<ReactionThermo, ThermoType>
    (
        modelType,
        thermo,
        turb,
        combustionProperties
    ),
    C_(this->coeffs().getScalar("C")),
    oxidantName_(this->coeffs().template getOrDefault<word>("oxidant", "O2"))
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
template<class ReactionThermo, class ThermoType>
diffusion<ReactionThermo, ThermoType>::~diffusion()
{}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
template<class ReactionThermo, class ThermoType>
void diffusion<ReactionThermo, ThermoType>::correct()
{
    this->wFuel_ == Zero;
 
    if (this->active())
    {
        this->singleMixturePtr_->fresCorrect();
 
        const label fuelI = this->singleMixturePtr_->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->turbulence().muEff()
               *mag(fvc::grad(YFuel) & fvc::grad(YO2))
               *pos0(YFuel)*pos0(YO2);
        }
    }
}
 
 
template<class ReactionThermo, class ThermoType>
bool diffusion<ReactionThermo, ThermoType>::read()
{
    if (singleStepCombustion<ReactionThermo, ThermoType>::read())
    {
        this->coeffs().readEntry("C", C_);
        this->coeffs().readIfPresent("oxidant", oxidantName_);
        return true;
    }
 
    return false;
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace combustionModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //