g_h: boundary layer conductance to heat (m / s)

g_h: boundary layer conductance to heat (m / s)

.get_gh(T_leaf, surface, pars, unitless)

Arguments

T_leaf	Leaf temperature in Kelvin
surface	Leaf surface (lower or upper)
pars	Concatenated parameters (leaf_par, enviro_par, and constants)
unitless	Logical. Should function use parameters with units? The function is faster when FALSE, but input must be in correct units or else results will be incorrect without any warning.

Value

Value in m/s of class units

Details

$$g_\mathrm{h} = D_\mathrm{h} Nu / d$$

Symbol	R	Description	Units	Default
\(d\)	leafsize	Leaf characteristic dimension in meters	m	0.1
\(D_\mathrm{h}\)	D_h	diffusion coefficient for heat in air	m\(^2\) / s	calculated
\(Nu\)	Nu	Nusselt number	none	calculated

Examples

library(tealeaves)

cs <- make_constants()
ep <- make_enviropar()
lp <- make_leafpar()

T_leaf <- set_units(298.15, K)

tealeaves:::.get_gh(T_leaf, "lower", c(cs, ep, lp), FALSE)
#> 0.01377139 [m/s]