高性能爆薬の水中爆ごう現象と爆ごう生成ガスの状態方程式(流体工学,流体機械)

概要

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An interaction between underwater shock waves and expansion waves occurred by the expansion of a product gas is investigated by both experimentally and by numerical simulation. Cylindrical high explosives are used in the experiments. Streak photographs and framing photographs are taken by a high-speed camera using a conventional shadowgraph system. When the cylindrical high explosive detonates in the water, an underwater shock wave is occurred and the product gas expands as the detonation wave propagates. Due to the expansion of the product gas, an expansion wave occurs and interacts with the underwater shock wave. The strength of the underwater shock wave is strongly effected by the expansion waves which changes its configuration. The attenuation process of the underwater shock wave is investigated theoretically using a method of characteristics. Using this theoretical work, it is possible to obtain the parameters of the Jones-Wilkins-Lee (JWL) equation of state for the product gas. The numerical results obtained by using the JWL parameters are compared with the experimental results. Good agreement between them is confirmed in the case of the underwater explosion of cylindrical high explosives.
一般社団法人日本機械学会の論文
1997-07-25