Introduction to Free Surface Flows and Open Channel Hydraulics

Understanding how water flows through open channels, rivers, and canals is fundamental to civil engineering, environmental science, and water resource management. This comprehensive written guide introduces you to the core physics and mechanics of free surface flows, equipping you with the knowledge to analyze and design stable open channel systems. What you'll learn: Understand the fundamental differences between pressurized pipe flow and gravity-driven free surface flow; Analyze critical, subcritical, and supercritical flow regimes using specific energy concepts; Compute uniform and gradually varied flow profiles using classic hydraulic formulas; Apply momentum principles to analyze hydraulic jumps and energy dissipation; Explore modern computational tools and basic modeling approaches used in contemporary hydraulic engineering. The course begins with foundational fluid mechanics definitions and key terminology, progresses through uniform and non-uniform flows, and concludes with practical applications in hydraulic design and modern engineering workflows. Designed for beginners, students, and aspiring engineers looking for a solid starting point in hydraulics, this course requires no advanced fluid dynamics background. Start reading today to build a strong foundation in open channel hydraulics.