conductance_helpers.h

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#ifndef CONDUCTANCE_HELPERS_H
#define CONDUCTANCE_HELPERS_H
 
#include "water_and_air_properties.h"  // for molar_volume
 
inline double g_to_mass(
    double const pressure,     // Pa
    double const conductance,  // mol / m^2 / s
    double const temperature   // degrees C
)
{
    double const mv_tl = molar_volume(temperature, pressure);  // m^3 / mol
    return conductance * mv_tl;                                // m / s
}
 
inline double g_to_molecular(
    double const pressure,     // Pa
    double const conductance,  // mol / m^2 / s
    double const temperature   // degrees C
)
{
    double const mv_tl = molar_volume(temperature, pressure);  // m^3 / mol
    return conductance / mv_tl;                                // mol / m^2 / s
}
 
inline double sequential_conductance(
    double const conductance_1,  // any conductance units
    double const conductance_2   // same units as conductance_1
)
{
    return 1.0 / (1.0 / conductance_1 + 1.0 / conductance_2);  // same units as conductance_1
}
 
#endif