mixtureFraction.C

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#include "mixtureFraction.H"
#include "singleStepCombustion.H"
#include "addToRunTimeSelectionTable.H"
 
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace radiationModels
{
namespace sootModels
{
    defineTypeNameAndDebug(mixtureFraction, 0);
 
    addToRunTimeSelectionTable
    (
        sootModel,
        mixtureFraction,
        dictionary
    );
}
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::radiationModels::sootModels::mixtureFraction::mixtureFraction
(
    const dictionary& dict,
    const fvMesh& mesh,
    const word& modelType
)
:
    sootModel(dict, mesh, modelType),
    soot_
    (
        IOobject
        (
            "soot",
            mesh_.time().name(),
            mesh_,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        mesh_
    ),
    coeffsDict_(dict.subOrEmptyDict(modelType + "Coeffs")),
    nuSoot_(coeffsDict_.lookup<scalar>("nuSoot")),
    Wsoot_(coeffsDict_.lookup<scalar>("Wsoot")),
    sootMax_(-1),
    mappingFieldName_
    (
        coeffsDict_.lookupOrDefault<word>("mappingField", "none")
    ),
    mapFieldMax_(1)
{
    const combustionModels::singleStepCombustion& combustion =
        mesh.lookupObject<combustionModels::singleStepCombustion>
        (
            combustionModel::combustionPropertiesName
        );
 
    const reaction& singleReaction = combustion.singleReaction();
 
    scalar totalMol = 0;
    forAll(singleReaction.rhs(), i)
    {
        const scalar stoichCoeff = singleReaction.rhs()[i].stoichCoeff;
        totalMol += mag(stoichCoeff);
    }
 
    totalMol += nuSoot_;
 
    scalarList Xi(singleReaction.rhs().size());
 
    scalar Wm = 0;
    forAll(singleReaction.rhs(), i)
    {
        const label speciei = singleReaction.rhs()[i].index;
        const scalar stoichCoeff = singleReaction.rhs()[i].stoichCoeff;
        Xi[i] = mag(stoichCoeff)/totalMol;
        Wm += Xi[i]*combustion.thermo().WiValue(speciei);
    }
 
    scalarList Yprod0(combustion.thermo().species().size(), 0.0);
 
    forAll(singleReaction.rhs(), i)
    {
        const label speciei = singleReaction.rhs()[i].index;
        Yprod0[speciei] = combustion.thermo().WiValue(speciei)/Wm*Xi[i];
    }
 
    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 = singleReaction.rhs()[0].index;
        mappingFieldName_ = combustion.thermo().Y(index).name();
    }
 
    const label mapFieldIndex =
        combustion.thermo().species()[mappingFieldName_];
 
    mapFieldMax_ = Yprod0[mapFieldIndex];
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::radiationModels::sootModels::mixtureFraction::~mixtureFraction()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::radiationModels::sootModels::mixtureFraction::correct()
{
    const volScalarField& mapField =
        mesh_.lookupObject<volScalarField>(mappingFieldName_);
 
    soot_ = sootMax_*(mapField/mapFieldMax_);
}
 
 
// ************************************************************************* //