ABSTRACT
Natural convection correlations are important for many real-life engineering applications such as electronic components. This chapter focuses on how to analytically solve external natural convection from a vertical plate at a uniform surface temperature by using the similarity method as well as the integral method. These methods are extended to solve mixed convection (combined natural and forced convection) problems for vertical, horizontal, and inclined plates or tubes for various Prandtl number fluids. Based on nonsimilarity consideration, the transformation of the momentum and energy equations is derived for upward and downward cases over the entire mixed convection regime.
