radial.hpp

#pragma once
 
#include <armadillo>
 
#include "heattransfer/heattransferbase.hpp"
#include "heattransfer/burialmedium.hpp"
#include "heattransfer/ambientfluid.hpp"
 
class Pipeline;
class PipeWall;
 
class RadialHeatTransfer : public HeatTransferBase
{
public:
    RadialHeatTransfer(
            const double diameter,
            const PipeWall& pipeWall,
            const double burialDepth,
            const BurialMedium& burialMedium,
            const AmbientFluid& ambientFluid);
 
    double calculateOuterFilmCoefficient() const;
 
    virtual arma::uword size() const { return m_width.n_elem; }
 
    virtual HeatTransferState makeState(const double heatFlux) const override
    {
        return HeatTransferState(heatFlux, arma::zeros<arma::vec>(size()));
    }
 
    virtual HeatTransferState makeState(
            const double heatFlux,
            const double gasTemperature,
            const double ambientTemperature) const override
    {
        arma::vec shellTemperature = arma::linspace(
                    gasTemperature, ambientTemperature, size());
 
        return HeatTransferState(heatFlux, shellTemperature);
    }
 
protected:
    double m_diameter; 
 
    double m_burialDepth; 
 
    BurialMedium m_burialMedium;
    AmbientFluid m_ambientFluid;
 
    arma::vec m_width;        
    arma::vec m_conductivity; 
    arma::vec m_density;      
    arma::vec m_heatCapacity; 
 
    arma::uvec m_isBurialLayer;
 
    arma::vec m_crossSection; 
    arma::vec m_ri;           
    arma::vec m_ro;           
};