Aerodynamics Practice Test: Unsteady Wave Motion — Flashcards

Unsteady Wave Motion topics include: Normal shock waves, reflected shock wave, finite waves, acoustics theory elements, incident and reflected expansion waves, shock tube relations and finite compression waves.

Unsteady wave motion is a type of unsteady flow, which means the flow parameters are not independent of time. Unsteady flow problems can vary widely in nature, such as from ocean waves to a flood wave. 

Unsteady wave motion can also refer to:
Unsteady expansion waves: These are similar to moving shock waves, but instead of the piston moving into the gas, it moves away from it.
Unsteady motion of shock wave: This is when the separated shock wave represents an unsteady motion along the streamwise direction.
Unsteady aspects of shock-wave / boundary-layer interaction: This includes the shear layer fluctuations and shock wave. 

Some unsteady wave motion research includes:
Unsteady shock wave dynamics: This research aims to improve the understanding of unsteady shock motion to the point where it can be reliably predicted and controlled.
Unsteady dynamics of a classical particle-wave entity: This research shows that a droplet bouncing on the surface of a vertically vibrating liquid bath can walk horizontally, guided by the waves it generates on each impact.