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Experimental and numerical study of a bubble induced by Nd:YAG laser at 1064 nm in the bulk and near a wall

Published online by Cambridge University Press:  09 May 2012

J. Chen ,
B. Han ,
B.-B. Li ,
Z.-H. Shen ,
J. Lu  and
X.-W. Ni
J. Chen
Affiliation:
School of Science, Nanjing University of Science & Technology, Nanjing, Jiangsu 210094, P.R. China
B. Han
Affiliation:
School of Science, Nanjing University of Science & Technology, Nanjing, Jiangsu 210094, P.R. China
B.-B. Li
Affiliation:
School of Science, Nanjing University of Science & Technology, Nanjing, Jiangsu 210094, P.R. China
Z.-H. Shen
Affiliation:
School of Science, Nanjing University of Science & Technology, Nanjing, Jiangsu 210094, P.R. China
J. Lu
Affiliation:
School of Science, Nanjing University of Science & Technology, Nanjing, Jiangsu 210094, P.R. China
X.-W. Ni*
Affiliation:
School of Science, Nanjing University of Science & Technology, Nanjing, Jiangsu 210094, P.R. China
*
ae-mail: [email protected]
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Abstract

The optical beam deflection method and numerical simulation are developed to study laserinduced bubble in the bulk and near a wall. The influence of the distance between the bubble center and the wall and the influence of the wall sizes on the collapse features of the bubble are discussed. The results show that the collapse time of the bubble is proportional to the maximum bubble radius, and the experimental and numerical results are in agreement with theoretical results when the bubble collapses in the bulk. Besides, the maximum radius increases with the laser energy and then begins to level out as the laser energy continues to increase because of the laser plasma shielding. The closer the bubble is to the wall, the larger the maximum radius and the collapse time are. Furthermore, the bubble surface velocity, the liquid jet velocity and the newborn shock wave pressure are larger, which means that the force acting on the wall is larger near small walls than near large ones.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 58 , Issue 2 , May 2012 , 21101
Copyright
© EDP Sciences, 2012

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