Abstract

Interactions of a shock wave with a gas bubble were investigated experimentally for four combinations of liquid/gas which are water/air, water/helium, silicone-oil/air, and silicone-oil/mixture of air and helium. In the experiments a gas bubble was exposed to a spherical shock wave generated by detonation of a micro-explosive, and the shock-bubble interactions were visualized using double exposure holographic interferometry and shadowgraphy. The gas bubble contracts on being hit by the shock, and a liquid jet forms. Eventually, rebound shock waves occur. It was found that there axe at least two types of rebound shocks. The generation of these for each type is explained by sequential flow visualizations.

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