mixtureFractionSoot.C

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    Copyright (C) 2020 OpenCFD Ltd.
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#include "mixtureFractionSoot.H"
#include "singleStepReactingMixture.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
 
template<class ThermoType>
const Foam::singleStepReactingMixture<ThermoType>&
Foam::radiation::mixtureFractionSoot<ThermoType>::checkThermo
(
    const fluidThermo& thermo
)
{
    if (isA<singleStepReactingMixture<ThermoType>>(thermo))
    {
        return dynamic_cast<const singleStepReactingMixture<ThermoType>&>
        (
            thermo
        );
    }
    else
    {
        FatalErrorInFunction
            << "Inconsistent thermo package for " << thermo.type()
            << "Please select a thermo package based on "
            << "singleStepReactingMixture" << exit(FatalError);
 
        return dynamic_cast<const singleStepReactingMixture<ThermoType>&>
        (
            thermo
        );
    }
 
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<class ThermoType>
Foam::radiation::mixtureFractionSoot<ThermoType>::mixtureFractionSoot
(
    const dictionary& dict,
    const fvMesh& mesh,
    const word& modelType
)
:
    sootModel(dict, mesh, modelType),
    soot_
    (
        IOobject
        (
            "soot",
            mesh_.time().timeName(),
            mesh_,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        mesh_
    ),
    coeffsDict_(dict.subOrEmptyDict(modelType + "Coeffs")),
    nuSoot_(coeffsDict_.get<scalar>("nuSoot")),
    Wsoot_(coeffsDict_.get<scalar>("Wsoot")),
    sootMax_(-1),
    mappingFieldName_
    (
        coeffsDict_.getOrDefault<word>("mappingField", "none")
    ),
    mapFieldMax_(1),
    thermo_(mesh.lookupObject<fluidThermo>(basicThermo::dictName)),
    mixture_(checkThermo(thermo_))
{
    const Reaction<ThermoType>& reaction = mixture_.operator[](0);
 
    const scalarList& specieStoichCoeffs(mixture_.specieStoichCoeffs());
 
    scalar totalMol = 0.0;
    forAll(reaction.rhs(), i)
    {
        label speciei = reaction.rhs()[i].index;
        totalMol += mag(specieStoichCoeffs[speciei]);
    }
 
    totalMol += nuSoot_;
 
    scalarList Xi(reaction.rhs().size());
 
    scalar Wm = 0.0;
    forAll(reaction.rhs(), i)
    {
        const label speciei = reaction.rhs()[i].index;
        Xi[i] = mag(specieStoichCoeffs[speciei])/totalMol;
        Wm += Xi[i]*mixture_.speciesData()[speciei].W();
    }
 
    const scalar XSoot = nuSoot_/totalMol;
    Wm += XSoot*Wsoot_;
 
    sootMax_ = XSoot*Wsoot_/Wm;
 
    Info << "Maximum soot mass concentrations: " << sootMax_ << nl;
 
    if (mappingFieldName_ == "none")
    {
        const label index = reaction.rhs()[0].index;
        mappingFieldName_ = mixture_.Y(index).name();
    }
 
    const label mapFieldIndex = mixture_.species()[mappingFieldName_];
 
    mapFieldMax_ = mixture_.Yprod0()[mapFieldIndex];
 
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
template<class ThermoType>
Foam::radiation::mixtureFractionSoot<ThermoType>::~mixtureFractionSoot()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class ThermoType>
void Foam::radiation::mixtureFractionSoot<ThermoType>::correct()
{
    const volScalarField& mapField =
        mesh_.lookupObject<volScalarField>(mappingFieldName_);
 
    soot_ = sootMax_*(mapField/mapFieldMax_);
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //