Ar: Archimedes number

Ar: Archimedes number

Ar(T_leaf, pars, unitless = FALSE)

Arguments

T_leaf	Leaf temperature in Kelvin
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

unitless = TRUE: A unitless number of class numeric unitless = FALSE: A unitless number of class units Also returns Reynolds and Grashof numbers

Details

The Archimedes number is a dimensionless number that describes when free or forced convection dominates.

$$Ar = Gr / Re ^ 2$$

Symbol	R	Description	Units	Default
\(Gr\)	Gr	Grashof number	none	calculated
\(Re\)	Re	Reynolds number	none	calculated

Examples

cs <- make_constants()
lp <- make_enviropar()
ep <- make_leafpar()
pars <- c(cs, lp, ep)
T_leaf <- set_units(298.15, "K")

Ar(T_leaf, pars)
#>                Ar           Gr           Re
#> 1 0.001472543 [1] 245079.5 [1] 12900.89 [1]