Rayleigh-Taylor Instability: Mechanical Example

This lecture introduces the Rayleigh-Taylor instability, discussing examples of flow instability such as lift-up and streaks, gravito-capillary waves, and vortex shedding. The instructor explains the simplification to 2D, dynamic and kinematic boundary conditions, and the impermeability condition. The lecture covers the mechanical example of Rayleigh-Taylor instability in detail.