wallBoundedStreamLineParticleTemplates.C

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    Copyright (C) 2017-2023 OpenCFD Ltd.
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// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class TrackCloudType>
bool Foam::wallBoundedStreamLineParticle::move
(
    TrackCloudType& cloud,
    trackingData& td,
    const scalar trackTime
)
{
    auto& p = static_cast<typename TrackCloudType::particleType&>(*this);
 
    // Check position is inside tet
    //checkInside();
 
    td.switchProcessor = false;
    td.keepParticle = true;
 
    scalar tEnd = (1.0 - stepFraction())*trackTime;
    scalar maxDt = mesh().bounds().mag();
 
    while (td.keepParticle && !td.switchProcessor && lifeTime_ > 0)
    {
        // Set the lagrangian time-step
        scalar dt = maxDt;
 
        --lifeTime_;
 
        // Get sampled velocity and fields. Store if position changed.
        vector U = p.sample(td);
 
        // !user parameter!
        if (dt < SMALL)
        {
            // Force removal
            lifeTime_ = 0;
            break;
        }
 
 
        if (td.trackLength_ < GREAT)
        {
            dt = td.trackLength_;
        }
 
 
        scalar fraction = trackToEdge(cloud, td, localPosition_ + dt*U);
        dt *= fraction;
 
        tEnd -= dt;
        stepFraction() = 1.0 - tEnd/trackTime;
 
 
        if (tEnd <= ROOTVSMALL)
        {
            // Force removal
            lifeTime_ = 0;
        }
    }
 
 
    if (!td.keepParticle || lifeTime_ == 0)
    {
        if (lifeTime_ == 0)
        {
            if (debug)
            {
                Pout<< "wallBoundedStreamLineParticle :"
                    << " Removing stagnant particle:"
                    << localPosition_
                    << " sampled positions:" << sampledPositions_.size()
                    << endl;
            }
            td.keepParticle = false;
        }
        else
        {
            // Normal exit. Store last position and fields
            sample(td);
 
            if (debug)
            {
                Pout<< "wallBoundedStreamLineParticle : Removing particle:"
                    << localPosition_
                    << " sampled positions:" << sampledPositions_.size()
                    << endl;
            }
        }
 
        // Transfer particle data into trackingData.
        {
            td.allPositions_.emplace_back().transfer(sampledPositions_);
        }
 
        forAll(sampledScalars_, i)
        {
            td.allScalars_[i].emplace_back().transfer(sampledScalars_[i]);
        }
        forAll(sampledVectors_, i)
        {
            td.allVectors_[i].emplace_back().transfer(sampledVectors_[i]);
        }
    }
 
    return td.keepParticle;
}
 
 
// ************************************************************************* //