Dynamics of laser-induced cavitation bubble near solid boundary

被引：16
|
作者：
Zhao, Rui [1 ]
Liang, Zhong-cheng [1 ]
Xu, Rong-qing [2 ]
Lu, Jian [3 ]
Ni, Xiao-wu [3 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Ctr Optofluid Technol, Nanjing 210003, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Coll Optoelect Engn, Nanjing 210003, Peoples R China
[3] Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Peoples R China
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2008年 / 47卷 / 07期
基金：
中国国家自然科学基金;
关键词：
cavitation bubble; acoustic transient; liquid jet; force sensor; Nd : YAG laser;
D O I：
10.1143/JJAP.47.5482
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The dynamics of a laser-induced cavitation bubble created near solid boundary is investigated using a new force sensor together with a hydrophone. The experimental results indicate that liquid-jet formation and acoustic transient emission are general features of bubble dynamics liquid-jet formation occurs earlier than that of the acoustic transient. A comparison of the liquid jet energy and acoustic energy reveals that the acoustic transient, rather than the liquid jet, plays a vital role in the damping mechanism during the second collapse for gamma = 0.75 (gamma = L/R-max,R- where R-max being the maximum bubble radius and L denoting the distance of the cavity inception from the boundary): moreover the amplitudes of acoustic transients and liquid jet versus the nondimensional distance gamma are also derived. which are valuable in hydraulic Cavitation, laser lithotripsy and laser ophthalmology.
引用
收藏
页码：5482 / 5485
页数：4
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