Fluid flow refers to the motion of a fluid under the influence of various unbalanced forces. It primarily belongs to a branch of fluid mechanics that is typically concerned with the dynamics of fluids. Heat transfer is a field of thermal engineering that focuses on the consumption, exchange, generation and conversion of thermal energy among physical systems. It is divided into several mechanisms, including thermal radiation, thermal conduction, thermal convection and transmission of energy through phase changes. Fluid flow and heat transfer are critical components of engineering process design. Heat transfer into a fluid leads to the development of an equilibrium temperature under constant flow, which requires the solution of the Navier-Stokes equations. This book includes some of the vital pieces of works being conducted across the world on fluid flow and heat transfer. It will also provide interesting topics for research, which interested readers can take up. This book is a resource guide for experts as well as students.