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Transition from regular to Mach reflection of shock waves Part 2. The steady-flow criterion

1982; Cambridge University Press; Volume: 123; Linguagem: Inglês

10.1017/s0022112082003000

1469-7645

H. G. Hornung, ML Robinson,

Cosmology and Gravitation Theories

It is shown experimentally that, in steady flow, transition to Mach reflection occurs at the von Neumann condition in the strong shock range (Mach numbers from 2.8 to 5). This criterion applies with both increasing and decreasing shock angle, so that the hysteresis effect predicted by Hornung, Oertel & Sandeman (1979) could not be observed. However, evidence of the effect is shown to be displayed in an unsteady experiment of Henderson & Lozzi (1979).