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Shock Dispersion of Liquids
Wave motion induced in an 8-mm thick water layer by a Mach 2.3 shock wave in
air initially at 0.25 bar. Schlieren photograph 3.35 ms after initial shock
passage. Note the stationary shock wave produced above the mist due to area
change associated with the dispersion process.
Photograph by Andrezj Teodorcyzk.
Experiments have been carried out in the 6-inch shock tube by Andrezj Teodorcyzk
to examine the problem of shock-induced dispersion of liquids. He has found
a strong dependence on the shock Mach number and some unique flow features.
A slowly moving, breaking water wave is produced by the separated flow
over the backward facing step at the upstream edge of the water layer. A coarse
spray is produced at lower shock Mach numbers (1.5 or less) and a fine spray
is observed at higher shock Mach numbers (2 or greater).
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