Determine if Convection is Free or Forced

The function compares the Grashof and Reynolds numbers to determine whether convection is free or forced (Gates 1980) .

free_or_forced_convection(Gr, Re)

Arguments

Gr

numeric Grashof Number (dimensionless).

Re

numeric Reynolds Number (dimensionless).

Value

character

"free", "forced", or "intermediate".

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(), 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(), heat_transfer_coefficient_approximation(), heat_transfer_coefficient_simple(), heat_transfer_coefficient(), saturation_vapor_pressure(), saturation_water_vapor_pressure()

Examples

  free_or_forced_convection(Gr = 100,
                            Re = 5)
#> [1] "intermediate condition, mixed convection based on Nusselt numbers is appropriate"