egrMixture.C

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    Copyright (C) 2011-2017 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.
 
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#include "egrMixture.H"
#include "fvMesh.H"
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<class ThermoType>
Foam::egrMixture<ThermoType>::egrMixture
(
    const dictionary& thermoDict,
    const fvMesh& mesh,
    const word& phaseName
)
:
    basicCombustionMixture
    (
        thermoDict,
        speciesTable({"ft", "b", "egr"}),
        mesh,
        phaseName
    ),
 
    stoicRatio_("stoichiometricAirFuelMassRatio", dimless, thermoDict),
 
    fuel_(thermoDict.subDict("fuel")),
    oxidant_(thermoDict.subDict("oxidant")),
    products_(thermoDict.subDict("burntProducts")),
 
    mixture_("mixture", fuel_),
 
    ft_(Y("ft")),
    b_(Y("b")),
    egr_(Y("egr"))
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class ThermoType>
const ThermoType& Foam::egrMixture<ThermoType>::mixture
(
    const scalar ft,
    const scalar b,
    const scalar egr
) const
{
    if (ft < 0.0001)
    {
        return oxidant_;
    }
    else
    {
 
        scalar fu = b*ft + (1.0 - b)*fres(ft, stoicRatio().value());
        scalar ox = 1 - ft - (ft - fu)*stoicRatio().value();
 
        fu *= (1.0 - egr);
        ox *= (1.0 - egr);
 
        scalar pr = 1 - fu - ox;
 
        mixture_ = fu*fuel_;
        mixture_ += ox*oxidant_;
        mixture_ += pr*products_;
 
        return mixture_;
    }
}
 
 
template<class ThermoType>
void Foam::egrMixture<ThermoType>::read(const dictionary& thermoDict)
{
    thermoDict.readEntry("stoichiometricAirFuelMassRatio", stoicRatio_);
 
    fuel_ = ThermoType(thermoDict.subDict("fuel"));
    oxidant_ = ThermoType(thermoDict.subDict("oxidant"));
    products_ = ThermoType(thermoDict.subDict("burntProducts"));
}
 
 
template<class ThermoType>
const ThermoType& Foam::egrMixture<ThermoType>::getLocalThermo
(
    const label speciei
) const
{
    if (speciei == 0)
    {
        return fuel_;
    }
    else if (speciei == 1)
    {
        return oxidant_;
    }
    else if (speciei == 2)
    {
        return products_;
    }
    else
    {
        FatalErrorInFunction
            << "Unknown specie index " << speciei << ". Valid indices are 0..2"
            << abort(FatalError);
 
        return fuel_;
    }
}
 
 
// ************************************************************************* //