Tb_limpetBH {TrenchR} | R Documentation |
Operative Environmental Temperature of a Limpet Based on a Model by Helmuth
Description
The function predicts body temperatures (C, operative environmental temperatures) of a limpet. The function was provided by Brian Helmuth – although radiation and convection are altered from his original model – and based on Denny and Harley (2006).
Usage
Tb_limpetBH(T_a, T_r, l, h, S, u, s_aspect, s_slope, c)
Arguments
T_a |
|
T_r |
|
l |
|
h |
|
S |
|
u |
|
s_aspect |
|
s_slope |
|
c |
|
Details
The original equation uses a finite-difference approach where they divide the rock into series of chunks, and calculate the temperature at each node to derive the conductive heat. For simplification, here it takes the rock temperature as a parameter, and conductive heat is calculated by the product of the area, thermal conductivity of rock and the difference in temperatures of the rock and the body.
Limpets are simulated as cones following and using solar emissivity values from Campbell and Norman (1998).
The area of the limpet's shell (m2) is projected in the direction at which sunlight strikes the organism Pennell and Deignan (1989).
Air conductivity values (W m-1 K-1) are calculated following Denny and Harley (2006).
Value
numeric
predicted body (operative environmental) temperature (C).
Author(s)
Brian Helmuth et al.
References
Campbell GS, Norman JM (1998).
Introduction to environmental biophysics, 2nd ed. edition.
Springer, New York.
ISBN 0387949372.
Denny MW, Harley CDG (2006).
“Hot limpets: predicting body temperature in a conductance-mediated thermal system.”
Journal of Experimental Biology, 209(13), 2409-2419.
ISSN 0022-0949, doi: 10.1242/jeb.02356.
Pennell S, Deignan J (1989).
“Computing the Projected Area of a Cone.”
SIAM Review, 31, 299-302.
doi: 10.1137/1031052.
See Also
Other biophysical models:
Grashof_number_Gates()
,
Grashof_number()
,
Nusselt_from_Grashof()
,
Nusselt_from_Reynolds()
,
Nusselt_number()
,
Prandtl_number()
,
Qconduction_animal()
,
Qconduction_substrate()
,
Qconvection()
,
Qemitted_thermal_radiation()
,
Qevaporation()
,
Qmetabolism_from_mass_temp()
,
Qmetabolism_from_mass()
,
Qnet_Gates()
,
Qradiation_absorbed()
,
Qthermal_radiation_absorbed()
,
Reynolds_number()
,
T_sky()
,
Tb_CampbellNorman()
,
Tb_Gates2()
,
Tb_Gates()
,
Tb_butterfly()
,
Tb_grasshopper()
,
Tb_limpet()
,
Tb_lizard_Fei()
,
Tb_lizard()
,
Tb_mussel()
,
Tb_salamander_humid()
,
Tb_snail()
,
Tbed_mussel()
,
Tsoil()
,
actual_vapor_pressure()
,
boundary_layer_resistance()
,
external_resistance_to_water_vapor_transfer()
,
free_or_forced_convection()
,
heat_transfer_coefficient_approximation()
,
heat_transfer_coefficient_simple()
,
heat_transfer_coefficient()
,
saturation_vapor_pressure()
,
saturation_water_vapor_pressure()
Examples
Tb_limpetBH(T_a = 25,
T_r = 30,
l = 0.0176,
h = 0.0122,
S = 1300,
u = 1,
s_aspect = 90,
s_slope = 60,
c = 1)