PatchFlowRateInjection.C

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#include "PatchFlowRateInjection.H"
#include "TimeFunction1.H"
#include "distribution.H"
#include "mathematicalConstants.H"
#include "surfaceFields.H"
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<class CloudType>
Foam::PatchFlowRateInjection<CloudType>::PatchFlowRateInjection
(
    const dictionary& dict,
    CloudType& owner,
    const word& modelName
)
:
    InjectionModel<CloudType>(dict, owner, modelName,typeName),
    patchInjectionBase(owner.mesh(), this->coeffDict().lookup("patchName")),
    phiName_(this->coeffDict().template lookupOrDefault<word>("phi", "phi")),
    rhoName_(this->coeffDict().template lookupOrDefault<word>("rho", "rho")),
    duration_(this->readDuration(dict, owner)),
    concentration_
    (
        TimeFunction1<scalar>
        (
            owner.db().time(),
            "concentration",
            this->coeffDict()
        )
    ),
    parcelConcentration_
    (
        this->coeffDict().template lookup<scalar>("parcelConcentration")
    ),
    sizeDistribution_
    (
        distribution::New
        (
            this->coeffDict().subDict("sizeDistribution"),
            owner.rndGen(),
            this->sizeSampleQ()
        )
    )
{}
 
 
template<class CloudType>
Foam::PatchFlowRateInjection<CloudType>::PatchFlowRateInjection
(
    const PatchFlowRateInjection<CloudType>& im
)
:
    InjectionModel<CloudType>(im),
    patchInjectionBase(im),
    phiName_(im.phiName_),
    rhoName_(im.rhoName_),
    duration_(im.duration_),
    concentration_(im.concentration_),
    parcelConcentration_(im.parcelConcentration_),
    sizeDistribution_(im.sizeDistribution_().clone().ptr())
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
template<class CloudType>
Foam::PatchFlowRateInjection<CloudType>::~PatchFlowRateInjection()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class CloudType>
void Foam::PatchFlowRateInjection<CloudType>::topoChange()
{
    patchInjectionBase::topoChange(this->owner().mesh());
}
 
 
template<class CloudType>
Foam::scalar Foam::PatchFlowRateInjection<CloudType>::timeEnd() const
{
    return this->SOI_ + duration_;
}
 
 
template<class CloudType>
Foam::scalar Foam::PatchFlowRateInjection<CloudType>::flowRate() const
{
   const polyMesh& mesh = this->owner().mesh();
 
    const surfaceScalarField& phi =
        mesh.lookupObject<surfaceScalarField>(phiName_);
 
    const scalarField& phip = phi.boundaryField()[patchId_];
 
    scalar flowRateIn = 0.0;
    if (phi.dimensions() == dimFlux)
    {
        flowRateIn = max(0.0, -sum(phip));
    }
    else
    {
        const volScalarField& rho =
            mesh.lookupObject<volScalarField>(rhoName_);
        const scalarField& rhop = rho.boundaryField()[patchId_];
 
        flowRateIn = max(0.0, -sum(phip/rhop));
    }
 
    reduce(flowRateIn, sumOp<scalar>());
 
    return flowRateIn;
}
 
 
template<class CloudType>
Foam::label Foam::PatchFlowRateInjection<CloudType>::nParcelsToInject
(
    const scalar time0,
    const scalar time1
)
{
    if (time0 >= 0 && time0 < duration_)
    {
        scalar dt = time1 - time0;
 
        scalar c = concentration_.value(0.5*(time0 + time1));
 
        scalar nParcels = parcelConcentration_*c*flowRate()*dt;
 
        Random& rnd = this->owner().rndGen();
 
        label nParcelsToInject = floor(nParcels);
 
        // Inject an additional parcel with a probability based on the
        // remainder after the floor function
        if
        (
            nParcelsToInject > 0
         && nParcels - scalar(nParcelsToInject) > rnd.globalScalar01()
        )
        {
            ++nParcelsToInject;
        }
 
        return nParcelsToInject;
    }
    else
    {
        return 0;
    }
}
 
 
template<class CloudType>
Foam::scalar Foam::PatchFlowRateInjection<CloudType>::massToInject
(
    const scalar time0,
    const scalar time1
)
{
    scalar volume = 0;
 
    if (time0 >= 0 && time0 < duration_)
    {
        scalar c = concentration_.value(0.5*(time0 + time1));
 
        volume = c*(time1 - time0)*flowRate();
    }
 
    return volume*this->owner().constProps().rho0();
}
 
 
template<class CloudType>
void Foam::PatchFlowRateInjection<CloudType>::setPositionAndCell
(
    const label,
    const label,
    const scalar,
    barycentric& coordinates,
    label& celli,
    label& tetFacei,
    label& tetPti,
    label& facei
)
{
    patchInjectionBase::setPositionAndCell
    (
        this->owner().mesh(),
        this->owner().rndGen(),
        coordinates,
        celli,
        tetFacei,
        tetPti,
        facei
    );
}
 
 
template<class CloudType>
void Foam::PatchFlowRateInjection<CloudType>::setProperties
(
    const label,
    const label,
    const scalar,
    typename CloudType::parcelType& parcel
)
{
    // Set particle velocity to carrier velocity
    parcel.U() = this->owner().U()[parcel.cell()];
 
    // Set particle diameter
    parcel.d() = sizeDistribution_->sample();
}
 
 
template<class CloudType>
bool Foam::PatchFlowRateInjection<CloudType>::fullyDescribed() const
{
    return false;
}
 
 
// ************************************************************************* //