Shocks and Shock Acceleration
Shock waves are common phenomena in fluid dynamics. When an obstacle moves faster than the velocity of the wave mode that transfers information in the medium, a shock is formed ahead of the obstacle. An example known to everyone is the sonic shock wave in the air caused by an aircraft moving faster than the speed of sound. This example examples is from the domain of collision-dominated neutral fluids, where the shocks are very thin, only a few collisional mean-free paths, and thus can be described as infinitesimal discontinuities in the mathematical description of the fluid flow.
KeywordsEntropy Anisotropy Convection Helium Soliton
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