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	Noise generation during the simultaneous collapse of two bubbles
	Pu Zhongqi ; Zhang Wei ; Shi Keren ; Zhang Junhua ; Wu Yulin
	2010-05-10 ; 2010-05-10
关键词	Theoretical or Mathematical/ acoustic noise bubbles cavitation vibrations wear/ cavity noise generation transient pressures cavitation erosion fluid mechanical equipment vibrations dynamic model two-bubble system acoustic radiation Lighthill equation bubble collapse radius collapse time cavity noise pressure bubble interactions radiated noise/ A4755K Multiphase flows A4755B Cavitation A4350 Acoustic noise, its effects and control E2130 Fluid mechanics and aerodynamics (mechanical engineering) E2140 Tribology (mechanical engineering) E2100 General mechanics
中文摘要	Bubble collapse causes large transient pressures resulting in cavitation erosion of fluid mechanical equipment, noise, and vibrations. A dynamic model was developed for a two-bubble system which neglects fluid compressibility to analyze two-bubble collapses and cavity noise generation. The acoustic radiation in the fluid was numerically calculated using a Lighthill equation based model for the two-bubble collapse. The calculation results show that the minimum bubble collapse radius decreases and that the collapse time and cavity noise pressure increases with decreasing distance between the two bubbles, which indicates that bubble interactions reduce the collapse speed but increase the radiated noise.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24335]
专题	清华大学
推荐引用方式 GB/T 7714	Pu Zhongqi,Zhang Wei,Shi Keren,et al. Noise generation during the simultaneous collapse of two bubbles[J],2010, 2010.
APA	Pu Zhongqi,Zhang Wei,Shi Keren,Zhang Junhua,&Wu Yulin.(2010).Noise generation during the simultaneous collapse of two bubbles..
MLA	Pu Zhongqi,et al."Noise generation during the simultaneous collapse of two bubbles".(2010).

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