Experimental Study on the Movement Characteristics of Spark-induced Cavitation Bubble with a wall by High-speed Photographical

Luo Jing

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Experimental Study on the Movement Characteristics of Spark-induced Cavitation Bubble with a wall by High-speed Photographical

更新时间：2023-11-14

- Experimental Study on the Movement Characteristics of Spark-induced Cavitation Bubble with a wall by High-speed Photographical
- Advanced Engineering Sciences Vol. 45, Issue Z2, Pages: 71-76(2013)
- 作者机构：
  
  四川大学水力学与山区河流开发保护国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013，
  
  Published Online：20 February 2013，
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罗晶.近壁面电火花空泡运动特性的高速摄影研究[J].工程科学与技术,2013,45(Z2):71-76.

Luo Jing. Experimental Study on the Movement Characteristics of Spark-induced Cavitation Bubble with a wall by High-speed Photographical. [J]. Advanced Engineering Sciences 45(Z2):71-76(2013)
罗晶.近壁面电火花空泡运动特性的高速摄影研究[J].工程科学与技术,2013,45(Z2):71-76. DOI：

Luo Jing. Experimental Study on the Movement Characteristics of Spark-induced Cavitation Bubble with a wall by High-speed Photographical. [J]. Advanced Engineering Sciences 45(Z2):71-76(2013) DOI：

摘要

中文摘要: 利用高速摄技术对电火花诱发的空化泡在发展过程中受壁面影响下的运动过程进行了实验观测。研究了空化泡在壁面附近的演变和空化泡受壁面作用下的溅射现象以及反弹现象。结果表明：在泡-壁无量纲距离γ < 3的条件下，空化泡在膨胀阶段并未向刚性壁面发生移动，当空化泡进入收缩阶段后开始向壁面运动；实验还表明随着γ的增大，空化泡向壁面运动的速度减小。通过较高的拍摄频率对近壁面空化泡发展后期运动过程进行了拍摄，实验表明当泡-壁距离γ（γ ≈ 1）较小时，空化泡受壁面影响出现了溅射流与反射流现象

Abstract

Abstract:Experiments are carried out with high-speed photography to observe the developing course of spark-induced cavitation bubble under the impact of the nearby wall. Then

research has been made to study the evolution of cavitation bubble near the wall

the sputtering phenomenon as well as the rebounding phenomenon. Result shows that on the condition that the bubble-wall dimensionless distance is less than three (γ < 3)

Cavitation bubble does not move towards the rigid wall in the expansion stage

but starts to in the contraction stage. The experiment also shows that as γ increases

cavitation bubble moves decreasingly to the rigid wall. At the same time

the late movement process of cavitation bubble near the wall is filmed with higher photo-frequency

and experiment shows that when the bubble-wall dimensionless distance γ(γ≈ 1) is relatively shorter

phenomenon of sputtering and rebounding is spotted on cavitation bubbles due to the effect of the rigid wall appeared.

关键词

空化泡空蚀微射流冲击波高速摄影

Keywords

cavitation bubblecavitation erosionmicro jetshock wavehigh-speed photography

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Sci. and Technol. Research Inst., China Three Gorges Corporation

State Key Lab. of Hydraulics and Mountain River Eng., Sichuan Univ.

National Eng. Research Center of Water Resources Efficient Utilization and Eng. Safety, Hohai Univ.

Power China Chengdu Eng. Corp. Ltd.

四川大学化学工程学院

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