Solar radiation inputs and calculations for thermal components. More...

#include "../../../hydrology/Radiation.hpp"

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Classes
struct	openswmm::transport::heat::SolarPosition
	Sun geometry at one instant. The SPA swap point's return type. More...

Functions
SolarPosition	openswmm::transport::heat::solarPosition (int day_of_year, double hour_local, double lat_deg, double lon_deg, double tz_hours) noexcept
	Compute Spencer/NOAA sun geometry at a local civil-clock instant.

double	openswmm::transport::heat::airMass (double zenith_deg) noexcept
	Compute Kasten-Young relative optical air mass.

double	openswmm::transport::heat::pressureFromElevation (double elevation_m) noexcept
	Estimate standard-atmosphere station pressure from elevation.

double	openswmm::transport::heat::birdClearSkyGHI (const SolarPosition &pos, double pressure_mb, const SolarConfig &cfg) noexcept
	Estimate clear-sky global horizontal irradiance with Bird-Hulstrom terms.

double	openswmm::transport::heat::cloudShortwaveFactor (double cloud_fraction, double k, double n) noexcept
	Compute the cloud attenuation multiplier max(0,1-k*C^n).

double	openswmm::transport::heat::cloudLongwaveFactor (double cloud_fraction, double k_lw) noexcept
	Compute the cloud atmospheric-emissivity multiplier 1+k_lw*C^2.

void	openswmm::transport::heat::updateSolarForcing (SimulationContext &ctx, double seconds=1)
	Update shared heat shortwave/cloud forcing with mesh radiation disabled.

Variables
constexpr double	openswmm::transport::heat::kSolarConstant
	Solar constant, W/m² (Bird & Hulstrom 1981; WMO 1982).

constexpr double	openswmm::transport::heat::kStdPressureMb
	Sea-level standard pressure, millibars — Bird's pressure reference.

Detailed Description

Solar radiation inputs and calculations for thermal components.

Classes