Abstract
The interaction of a shock wave with a gas bubble was visualized by double exposure holographic interferometry or shadowgraph for four combinations of liquid/gas, such as, silicone-oil (1.0 cSt)/air, silicone-oil (10cSt)/air, water/air, and water/helium. The gas bubble was exposed to a spherical shock wave generated by detonating a 10 mg silver azide pellet. The gas bubble contracted by hitting of the shock, and aa liquid jet formed, as the case may be. Eventually, one or plural rebound shock waves occurred. It was found that there are at least three types of rebound shocks. The generation of these for each type is explained by sequential flow visualizations. Numerical simulations were also carried out using GRP/MIT scheme.
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