A review of the recent developments in laminar, transitional, quasi-turbulent and turbulent forced and mixed convective flow through horizontal tubes

Abstract

he laminar and turbulent flow regimes have been extensively investigated from as early as 1883, and research has been devoted to the transitional flow regime since the 1990s. However, there are several gaps in the mixed convection literature, especially when the flow is still developing. The purpose of this chapter is to combine fragmented previous work of the authors to create a new coherent body of work with new perspectives. Specifically, focusing on the heat transfer and pressure drop characteristics of developing and fully developed flow in smooth horizontal tubes for forced and mixed convection conditions. The flow regimes that were covered were laminar (forced and mixed convection), transitional (forced and mixed convection), quasi-turbulent and turbulent.