This process occurs above a critical value of the Rayleigh number.
This process occurs above a critical value of the Rayleigh number. The mode is characterized by the ratio of the kinematic viscosity and the thermal diffusivity. This process tends to establish an adiabatic profile, and is the dominant mechanism of heat transfer in the Earth's mantle and in the Sun between the radiative zone and the atmosphere. For 10 points—name this process that transfers heat by bulk fluid motion.
This process occurs above a critical value of the Rayleigh number.
{convection} [do not accept forced convection]