.get_nu | R Documentation |
Nu: Nusselt number
.get_nu(T_leaf, surface, pars, unitless)
T_leaf |
Leaf temperature in Kelvin |
surface |
Leaf surface (lower or upper) |
pars |
Concatenated parameters ( |
unitless |
Logical. Should function use parameters with |
The Nusselt number depends on a combination how much free or forced convection predominates. For mixed convection:
Nu = (a Re ^ b) ^ {3.5} + (c Gr ^ d) ^ {3.5}) ^ {1 / 3.5}
Symbol | R | Description | Units | Default |
a, b, c, d | a, b, c, d | empirical coefficients | none | calculated |
Gr | Gr | Grashof number | none | calculated |
Re | Re | Reynolds number | none | calculated |
A unitless number of class units
library(tealeaves)
cs <- make_constants()
ep <- make_enviropar()
lp <- make_leafpar()
T_leaf <- set_units(298.15, K)
tealeaves:::.get_nu(T_leaf, "lower", c(cs, ep, lp), FALSE)
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