for the various heat transfer situations in as vivid manner as possible. The book covers a broad range of topics from forced, naturaland mixed convection without and with porous media. Laminaras well as turbulent flow heat transfer to non-Newtonian fluids have been treated and the criterion for transition from laminar toturbulent fl ow for natural convection has been established. The heat transfer characteristics of non-Newtonian fl uids from inelastic power-law fluids to viscoelastic second-order fluids and mildly elastic drag reducing fl uids are covered. This book can serve the needs of undergraduates, graduates and industry personnel from the fields of chemical engineering, material science and engineering, mechanical engineering and polymer engineering.