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]