Experimental Study of the Shock Generation at the Collapse of Cavitation Bubble
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概要
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Using a photoelastic apparatus or Schlieren interferometer, we experimentally studied the mechanism of the impulsive force generation by a spark-induced cavitation bubble, collapsing near the solid boundary. The experimental results indicate that the cause of the impulsive force is classified by the parameter l, where l= (maximum bubble center distance from the solid boundary) / (maximum bubble radius). In case of l≩1.35,the shock waves are dominant and in case of l<1.35,the water microjet impingement is the main cause of the impulsive force. In a special case (l≨1.24>), both the shock waves and the water microjet are supposed to impact against the solid boundary. Even when an asymmetrically collapsing bubble rebounds, the shock waves are observed.
- 一般社団法人日本機械学会の論文
著者
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Ueki Hiroshi
Faculty Of Engineering Science Osaka University
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Kimoto Hideo
Faculty Of Engineering Science Osaka University
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Kimoto Hideo
Osaka University
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Hirose Tatsuzo
Fukui Institute Of Technlogy
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TSUDA Yoshiyuki
Energy Conversion Research Laboratory, Matsushita Electric Industorial Co., Ltd.
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Tsuda Yoshiyuki
Matsushita Electric Industry
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KIMOTO Hideo
Faculity of Engineering Science, Osaka University
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