boundary_layer_resistance {TrenchR}

Boundary Layer Resistance

Description

The function estimates boundary layer resistance under free convection based on the function in Riddell et al. (2018).

Usage

boundary_layer_resistance(T_a, e_s, e_a, elev, D, u = NA)

Arguments

T_a

numeric air temperature (K).

e_s

numeric saturation vapor pressure (kPa).

e_a

numeric actual vapor pressure (kPa).

elev

numeric elevation (m).

D

numeric characteristic dimension (e.g., body diameter) (m).

u

numeric wind speed (m s^-1), if not provided assume free convection; if provided, use forced convection if appropriate.

Value

numeric boundary layer resistance (s cm^-1).

Author(s)

Eric Riddell

References

Riddell EA, Odom JP, Damm JD, Sears MW (2018). “Plasticity reveals hidden resistance to extinction under climate change in the global hotspot of salamander diversity.” Science Advances, 4(4). doi: 10.1126/sciadv.aar5471.

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(), 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

  boundary_layer_resistance(T_a  = 293,
                            e_s  = 2.5,
                            e_a  = 2.0,
                            elev = 500,
                            D    = 0.007,
                            u    = 2)