Value of Nusselt number [Nu = (hD/k)] for the heat transfer by conduction from a droplet or a spherical particle to a surrounding stagnant film is
A)0.5
B)2
C)10
D)100

Question

Quizplus · Accepted Answer

The Nusselt number (Nu) for heat transfer by conduction from a droplet or a spherical particle to a surrounding stagnant film is 2. This is based on the assumption of steady-state heat conduction and no convection, where the heat transfer is purely radial and the thermal resistance of the droplet or particle is negligible compared to that of the surrounding medium.

Value of Nusselt Number [Nu = (HD/k)] for the Heat