openswmm::transport::heat::SolarPosition Struct Reference

Sun geometry at one instant. The SPA swap point's return type. More...

#include <SolarRadiation.hpp>

Collaboration diagram for openswmm::transport::heat::SolarPosition:

Public Attributes
double	declination_deg = 0.0
	Solar declination, +N.
double	eq_time_min = 0.0
	Equation of time, minutes.
double	hour_angle_deg = 0.0
	Solar hour angle, 0 at solar noon.
double	zenith_deg = 90.0
	Solar zenith angle.
double	cos_zenith = 0.0
	Clamped at 0 below the horizon.
double	elevation_deg = 0.0
double	eccentricity = 1.0
	Earth–sun distance correction E0 = (r0/r)², dimensionless.

Detailed Description

Sun geometry at one instant. The SPA swap point's return type.

Angles in DEGREES. cos_zenith is carried alongside zenith_deg because every downstream consumer wants the cosine and rounding a degree value back through cos twice is how a night-time cos_zenith acquires a small positive value.

Member Data Documentation

cos_zenith

double openswmm::transport::heat::SolarPosition::cos_zenith = 0.0

Clamped at 0 below the horizon.

declination_deg

double openswmm::transport::heat::SolarPosition::declination_deg = 0.0

Solar declination, +N.

eccentricity

double openswmm::transport::heat::SolarPosition::eccentricity = 1.0

Earth–sun distance correction E0 = (r0/r)², dimensionless.

elevation_deg

double openswmm::transport::heat::SolarPosition::elevation_deg = 0.0

90 − zenith (may be negative)

eq_time_min

double openswmm::transport::heat::SolarPosition::eq_time_min = 0.0

Equation of time, minutes.

hour_angle_deg

double openswmm::transport::heat::SolarPosition::hour_angle_deg = 0.0

Solar hour angle, 0 at solar noon.

zenith_deg

double openswmm::transport::heat::SolarPosition::zenith_deg = 90.0

Solar zenith angle.

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The documentation for this struct was generated from the following file:

• /home/runner/work/openswmm.engine/openswmm.engine/src/engine/transport/components/HeatFluxModules/SolarRadiation.hpp