Lecture
This lecture covers the concept of straight shocks in fluid dynamics, focusing on the relationship between total and static quantities, the thermodynamic implications of ideal gases, and the Rankine-Hugoniot relation. It explains the increased entropy through a straight shock and the application of the second principle of thermodynamics. The lecture also discusses the conditions for sonic flow and the verification of Mach numbers. Various scenarios are explored, including the compression effects of straight shocks and the transition from supersonic to subsonic flow. The summary emphasizes the conservation of total enthalpy and the normal impact speed at the shock.