Experimental investigations on the interaction between shock wave and liquid films with different thicknesses
To explore the deformation,breakup,and atomization characteristics of a liquid film under the influence of a shock wave,experiments are conducted using a shock tube for liquid films with different thicknesses.By using shadow photography as a visualization tool,we record the experimental process and obtain relevant data.The results show that the main breakup mechanisms of the liquid film interface are Rayleigh-Taylor(RT)instability and Richtmyer-Meshkov(RM)instability,which significantly enhance the mixing process of the liquid droplet and air.When a shock wave,reflection wave,sparse wave,and high-speed airflow interact with the liquid film for a longer time,unevenly sized bubbles may form inside the liquid film,thus creating cavitation zones.As the thickness of the liquid film increases,the pressure of the incident shock wave slightly increases and the intensity and pressure of the reflection shock wave present a trend of decreasing first and then increasing.When the film thickness is 10 mm,the intensity of the reflected shock wave after the incident shock wave at 1.58Ma is only 0.29Ma.The results can provide data reference for the research of the explosion dispersal process of fuel-air-explosive.
万方数据
维普
