This book serves as a comprehensive guide to the fundamental and advanced principles of flow dynamics and heat transfer, emphasizing computational techniques, numerical simulations, and real-world applications. Designed for researchers, engineers, and students, this book bridges theoretical foundations with modern computational and experimental methodologies to address contemporary challenges in fluid flow and heat transfer. Exploring a wide range of topics, from compressible and non-Newtonian fluid flow to microscale and nanoscale heat transfer mechanisms, the book provides insights into emerging technologies and optimization strategies. Readers will gain valuable knowledge on industrial applications, including turbine cooling, nanofluid-based heat exchangers, and AI-driven predictive modeling for thermal systems. An essential reference for professionals and academics, this book equips readers with the knowledge and computational tools needed to solve complex fluid flow and heat transfer challenges across diverse engineering disciplines.