Water aerosol formation: Transient process induced by shock waves

摘要: Abstract The formation of aerosols artificially is an interesting topic nowadays. This paper studied the interaction between water sheets and shock waves experimentally to seek mechanism simulate processes aerosol. Optical instruments like normal high speed camera multiple-spark were employed in experiments data obtained was solved with common statistics software Statistical Product Service Solutions (SPSS). Phase Doppler Particle Analyzer (PDPA) also used give a description aerosol shown diameter velocity parameters. After analysis typical photos obtained, results showed that once past through by waves, sheet faced surface stripping breaking progress. shock-wave induced layer compressive elastic-wave, whose magnitude related ratio acoustic impedance two media. Shock propagates thickness water-wall when it reaches next water/air interface nearly totally reflected as tensile wave. Such wave will induce cavitation water-wall. Subsequent cavitation, keeps moving uniform undergoes strain, small vapor bubbles forming while direction blast. Finally, based on dispersal mechanism, dimensionless parameters calculated brought build model.