WallShearStressBasedRegressionSolver.cpp

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#include "WallShearStressBasedRegressionSolver.hpp"
#include "Owen11Parameters.hpp"
#include <vector>

template<unsigned DIM>
WallShearStressBasedRegressionSolver<DIM>::WallShearStressBasedRegressionSolver() :
    RegressionSolver<DIM>(),
    mThresholdWss(Owen11Parameters::mpCriticalWallShearStress->GetValue("WallShearStressBasedRegressionSolver")),
    mMaxTimeWithLowWss(Owen11Parameters::mpMaxTimeWithLowWallShearStress->GetValue("WallShearStressBasedRegressionSolver"))
{

}

template<unsigned DIM>
WallShearStressBasedRegressionSolver<DIM>::~WallShearStressBasedRegressionSolver()
{

}

template<unsigned DIM>
boost::shared_ptr<WallShearStressBasedRegressionSolver<DIM> > WallShearStressBasedRegressionSolver<DIM>::Create()
{
    MAKE_PTR(WallShearStressBasedRegressionSolver<DIM>, pSelf);
    return pSelf;
}

template<unsigned DIM>
void WallShearStressBasedRegressionSolver<DIM>::SetMaximumTimeWithLowWallShearStress(units::quantity<unit::time> time)
{
    mMaxTimeWithLowWss = time;
}

template<unsigned DIM>
void WallShearStressBasedRegressionSolver<DIM>::SetLowWallShearStressThreshold(units::quantity<unit::pressure> threshold)
{
    mThresholdWss = threshold;
}

template<unsigned DIM>
void WallShearStressBasedRegressionSolver<DIM>::Increment()
{
    if(!this->mpNetwork)
    {
        EXCEPTION("The regression solver needs an initial vessel network");
    }

    std::vector<boost::shared_ptr<Vessel<DIM> > > vessels = this->mpNetwork->GetVessels();
    for(unsigned idx=0;idx<vessels.size(); idx++)
    {
        // if wall shear stress of vessel is below threshold then start regression timer, unless it has already been started
        if (vessels[idx]->GetFlowProperties()->GetWallShearStress() < mThresholdWss)
        {
            if (!(vessels[idx]->GetFlowProperties()->HasRegressionTimerStarted()) && !(vessels[idx]->GetFlowProperties()->HasVesselRegressed(this->mReferenceTime)))
            {
                // increment time that the vessel has had low wall shear stress
                vessels[idx]->GetFlowProperties()->SetTimeUntilRegression(mMaxTimeWithLowWss, this->mReferenceTime);
            }
        }
        else // otherwise rescue vessel
        {
            // wall shear stress above threshold so vessel is not regressing
            vessels[idx]->GetFlowProperties()->ResetRegressionTimer();
        }
    }

    // iterate through all vessels and if regression flag is true then remove from the network
    for(unsigned idx=0;idx<vessels.size(); idx++)
    {
        if (vessels[idx]->GetFlowProperties()->HasVesselRegressed(this->mReferenceTime))
        {
            this->mpNetwork->RemoveVessel(vessels[idx], true);
        }
    }
}

// Explicit instantiation
template class WallShearStressBasedRegressionSolver<2>;
template class WallShearStressBasedRegressionSolver<3>;