wideBand.C

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License
    This file is part of OpenFOAM.
 
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#include "wideBand.H"
#include "addToRunTimeSelectionTable.H"
#include "fluidMulticomponentThermo.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace radiationModels
{
namespace absorptionEmissionModels
{
    defineTypeNameAndDebug(wideBand, 0);
 
    addToRunTimeSelectionTable
    (
        absorptionEmissionModel,
        wideBand,
        dictionary
    );
}
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::radiationModels::absorptionEmissionModels::wideBand::wideBand
(
    const dictionary& dict,
    const fvMesh& mesh,
    const word& modelName
)
:
    absorptionEmissionModel(dict, mesh),
    coeffsDict_(dict.subDict(modelName + "Coeffs")),
    speciesNames_(0),
    specieIndex_(label(0)),
    lookUpTablePtr_(),
    thermo_(mesh.lookupObject<fluidThermo>(physicalProperties::typeName)),
    Yj_(nSpecies_),
    totalWaveLength_(0)
{
    if (!isA<fluidMulticomponentThermo>(thermo_))
    {
        FatalErrorInFunction
            << "Model requires a multi-component thermo package"
            << abort(FatalError);
    }
 
    label nBand = 0;
    forAllConstIter(dictionary, coeffsDict_, iter)
    {
        if (!iter().isDict()) continue;
 
        const dictionary& dict = iter().dict();
        dict.lookup("bandLimits") >> iBands_[nBand];
        totalWaveLength_ += iBands_[nBand][1] - iBands_[nBand][0];
 
        label nSpec = 0;
        forAllConstIter(dictionary, dict, iter)
        {
            if (!iter().isDict()) continue;
 
            const word& key = iter().keyword();
            if (nBand == 0)
            {
                speciesNames_.insert(key, nSpec);
            }
            else
            {
                if (!speciesNames_.found(key))
                {
                    FatalErrorInFunction
                        << "specie: " << key << " is not in all the bands"
                        << nl << exit(FatalError);
                }
            }
            coeffs_[nBand][nSpec].initialise(dict.subDict(key));
            nSpec++;
        }
        nBand++;
    }
    nBands_ = nBand;
 
    if (coeffsDict_.found("lookUpTableFileName"))
    {
        const word name = coeffsDict_.lookup("lookUpTableFileName");
        if (name != "none")
        {
            lookUpTablePtr_.set
            (
                new interpolationLookUpTable
                (
                    fileName(coeffsDict_.lookup("lookUpTableFileName")),
                    mesh.time().constant(),
                    mesh
                )
            );
 
            if (!mesh.foundObject<volScalarField>("ft"))
            {
                FatalErrorInFunction
                    << "specie ft is not present to use with "
                    << "lookUpTableFileName " << nl
                    << exit(FatalError);
            }
        }
    }
 
    // Check that all the species on the dictionary are present in the
    // look-up table and save the corresponding indices of the look-up table
 
    label j = 0;
    forAllConstIter(HashTable<label>, speciesNames_, iter)
    {
        if (!lookUpTablePtr_.empty())
        {
            if (lookUpTablePtr_().found(iter.key()))
            {
                const label index =
                    lookUpTablePtr_().findFieldIndex(iter.key());
 
                Info<< "specie: " << iter.key() << " found on look-up table "
                    << " with index: " << index << endl;
 
                specieIndex_[iter()] = index;
            }
            else if (mesh.foundObject<volScalarField>(iter.key()))
            {
                Yj_.set(j, &mesh.lookupObjectRef<volScalarField>(iter.key()));
                specieIndex_[iter()] = 0;
                j++;
                Info<< "specie: " << iter.key() << " is being solved" << endl;
            }
            else
            {
                FatalErrorInFunction
                    << "specie: " << iter.key()
                    << " is neither in look-up table: "
                    << lookUpTablePtr_().tableName()
                    << " nor is being solved" << nl
                    << exit(FatalError);
            }
        }
        else if (mesh.foundObject<volScalarField>(iter.key()))
        {
            Yj_.set(j, &mesh.lookupObjectRef<volScalarField>(iter.key()));
            specieIndex_[iter()] = 0;
            j++;
        }
        else
        {
            FatalErrorInFunction
                << " there is no lookup table and the specie" << nl
                << iter.key() << nl
                << " is not found " << nl
                << exit(FatalError);
 
        }
    }
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::radiationModels::absorptionEmissionModels::wideBand::~wideBand()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::tmp<Foam::volScalarField>
Foam::radiationModels::absorptionEmissionModels::wideBand::aCont
(
    const label bandi
) const
{
    const fluidMulticomponentThermo& mcThermo =
        dynamic_cast<const fluidMulticomponentThermo&>(thermo_);
 
    const volScalarField& T = thermo_.T();
    const volScalarField& p = thermo_.p();
 
    tmp<volScalarField> ta
    (
        volScalarField::New
        (
            "a",
            mesh(),
            dimensionedScalar(dimless/dimLength, 0)
        )
    );
 
    scalarField& a = ta.ref().primitiveFieldRef();
 
    const unitConversion& unitAtm = units()["atm"];
 
    forAll(a, celli)
    {
        forAllConstIter(HashTable<label>, speciesNames_, iter)
        {
            const label n = iter();
            scalar Xipi = 0;
            if (specieIndex_[n] != 0)
            {
                const volScalarField& ft =
                    mesh_.lookupObject<volScalarField>("ft");
 
                const List<scalar>& Ynft = lookUpTablePtr_().lookUp(ft[celli]);
 
                // moles*pressure [atm]
                Xipi = unitAtm.toUser(Ynft[specieIndex_[n]]*p[celli]);
            }
            else
            {
                scalar invWt = 0;
                forAll(mcThermo.Y(), s)
                {
                    invWt += mcThermo.Y(s)[celli]/mcThermo.WiValue(s);
                }
 
                const label index = mcThermo.species()[iter.key()];
 
                const scalar Xk =
                    mcThermo.Y(index)[celli]/(mcThermo.WiValue(index)*invWt);
 
                Xipi = unitAtm.toUser(Xk*p[celli]);
            }
 
            scalar Ti = T[celli];
 
            const absorptionCoeffs::coeffArray& b =
                coeffs_[bandi][n].coeffs(T[celli]);
 
            if (coeffs_[bandi][n].invTemp())
            {
                Ti = 1.0/T[celli];
            }
 
            a[celli]+=
                Xipi
               *(
                    ((((b[5]*Ti + b[4])*Ti + b[3])*Ti + b[2])*Ti + b[1])*Ti
                  + b[0]
                );
        }
    }
 
    return ta;
}
 
 
Foam::tmp<Foam::volScalarField>
Foam::radiationModels::absorptionEmissionModels::wideBand::eCont
(
    const label bandi
) const
{
    return aCont(bandi);
}
 
 
Foam::tmp<Foam::volScalarField>
Foam::radiationModels::absorptionEmissionModels::wideBand::ECont
(
    const label bandi
) const
{
    return absorptionEmissionModel::ECont(bandi);
}
 
 
void Foam::radiationModels::absorptionEmissionModels::wideBand::correct
(
    volScalarField& a,
    PtrList<volScalarField>& aLambda
) const
{
    a = dimensionedScalar(dimless/dimLength, 0);
 
    for (label j=0; j<nBands_; j++)
    {
        aLambda[j].primitiveFieldRef() = this->a(j);
 
        a.primitiveFieldRef() +=
            aLambda[j].primitiveField()
           *(iBands_[j][1] - iBands_[j][0])
           /totalWaveLength_;
    }
 
}
 
 
// ************************************************************************* //