In convective heat transfer there are several important dimensionless numbers like Reynolds, Prandtl, Grashof, Rayleigh, and one of them is Nusselt. Wilhelm Nusselt was a mechanical engineer who introduced a dimensionless concept correlating the convective heat transfer coefficient and thermal conductivity, which is the so called Nusselt number. The Nusselt number was a very significant achievement in convective heat transfer.

Timestamps:
00:00 Motivation
00:22 Introduction and definition
01:08 Is Nusselt a dimensionless number?
01:51 Physical definition
5:57 Application of Nusselt
7:03 Summary

Key words: Heat transfer, fluid mechanics, convection, conduction, dimensionless number, dimensionless convective heat transfer coefficient,