Heat Transfer: Convection and Heat Flux

This lecture focuses on natural convection and the importance of solving exercises to understand derivations and heat transfer. The instructor explains the concept of Nusselt number, which represents the boundary layer and heat flux. By making the heat flux non-dimensional with the Nusselt number, one can determine the amount of energy needed for heat transfer. The lecture delves into predicting the Nusselt number for heating water in a pipe, emphasizing the balance between convection, diffusion, and heat production. Through a detailed analysis of non-dimensional numbers like Reynolds, Peclet, and Nusselt, the lecture illustrates the dominance of conduction in heat transfer processes.