Prandtl_number {TrenchR}

Prandtl Number

Description

The function estimates the Prandtl Number, which describes the ratio of kinematic viscosity to thermal diffusivity (Gates 1980).

Usage

Prandtl_number(c_p, mu, K)

Arguments

c_p

numeric specific heat at constant pressure (J mol^-1 K^-1).

mu

numeric dynamic viscosity (mol s^-1 m^-1).

K

numeric thermal conductivity (W K^-1 m^-1).

Value

numeric Prandtl number.

References

Gates DM (1980). Biophysical Ecology. Springer-Verlag, New York, NY, USA.

See Also

Other biophysical models: Grashof_number_Gates(), Grashof_number(), Nusselt_from_Grashof(), Nusselt_from_Reynolds(), Nusselt_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_approximation(), heat_transfer_coefficient_simple(), heat_transfer_coefficient(), saturation_vapor_pressure(), saturation_water_vapor_pressure()

Examples

  Prandtl_number(c_p = 29.3,
                 mu  = 0.00001,
                 K   = 0.5)