heat_transfer_coefficient_approximation {TrenchR}

Estimate the Heat Transfer Coefficient Using a Spherical Approximation

Description

The function estimates the heat transfer coefficient for various taxa. Approximates forced convective heat transfer for animal shapes using the convective relationship for a sphere (Mitchell 1976).

Usage

heat_transfer_coefficient_approximation(u, D, K, nu, taxon = "sphere")

Arguments

u

numeric air velocity (m s^-1).

D

numeric characteristic dimension (e.g., diameter or snout-vent length) (meters).

K

numeric thermal conductivity of air (W m^-2 K^-1), can calculate using DRYAIR or WETAIR.

nu

numeric kinematic Viscosity of air (m² s^-1), can calculate using DRYAIR or WETAIR.

taxon

character of which class of organism, current choices: "sphere", "frog", "lizard", "flyinginsect", "spider".

Value

numeric heat transfer coefficient, H_L (W m^-2 K^-1).

References

Mitchell JW (1976). “Heat transfer from spheres and other animal forms.” Biophysical Journal, 16(6), 561-569. ISSN 0006-3495, doi: 10.1016/S0006-3495(76)85711-6.

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_limpetBH(), 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_simple(), heat_transfer_coefficient(), saturation_vapor_pressure(), saturation_water_vapor_pressure()

Examples

 heat_transfer_coefficient_approximation(u     = 3,
                                         D     = 0.05,
                                         K     = 25.7 * 10^(-3),
                                         nu    = 15.3 * 10^(-6),
                                         taxon = "sphere")