Experimental Investigations of Cavitation Bubble Collapse by a Water Shock Tube

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概要

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• This paper deals experimentally with the mechanism of an impulsive pressure generated by a collapsing bubble. In a water filled shock tube, an expansion wave and a subsequent compression wave are applied to single, twin and triadic bubbles. The growth, collapse and rebound of bubbles situated at various distances from a solid boundary are observed by means of high-speed photography and in-line Fraunhofer holography using a pulsed dye laser. The results indicate that the impulsive pressure is caused by a shock wave radiated at the instant of the rebound of a collapsing bubble, and that the subsequent jet impingement does not produce any detectable effects. The pressure pulse is found to be of the order 10^4 〜 10^5 atm, and its duration 2 〜 3 μsec.

• 一般社団法人日本機械学会の論文

著者

• Fujikawa Shigeo

  Research Fellow Of The Japan Society For The Promotion Of Science Department Of Mechanical Engineeri

• Akamatsu Teruaki

  Professor Department Of Mechanical Engineering Kyoto University

関連論文

• Experimental Investigations of Cavitation Bubble Collapse by a Water Shock Tube

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