On the impact of ultrasonic cavitation bubbles

被引：21

作者：

Abdullah, A. ^{[1
]}

Malaki, M. ^{[1
]}

Baghizadeh, E. ^{[1
]}

机构：

[1] Amir Kabir Univ Technol, Dept Mech Engn, Tehran, Iran

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE | 2012年 / 226卷 / C3期

关键词：

ultrasonic; cavitation; bubble collapse; impulse; impact; TRANSIENT CAVITIES; RIGID BOUNDARY; COLLAPSE; SURFACES; PRESSURE; EROSION; GROWTH; WALL;

D O I：

10.1177/0954406211414769

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The main purpose of this study was to determine the impulse of a bubble on a solid surface or the amount of energy transmitted to the surface by the bubble. To do this, the results of previous numerical studies were used to derive a relationship between the speed of microjet and acoustic pressure amplitude. It was found that the speed of microjet is proportional to the logarithm of the acoustic pressure amplitude. Aluminium foil specimens were exposed to cavitation for 3 s and the dimensions of pits generated on specimens were measured. Then, the deformation energy of each pit and the corresponding impulse were calculated. The trend of experimental results was in a good agreement with the theoretical ones but their exact values were not.

引用

页码：681 / 694

页数：14

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