Computational analysis of single-bubble and double-bubble cavitation noises

作者：Lu, Yi-Gang^*; Li, Yue-Jia

来源：Journal of South China University of Technology(Natural Science Edition), 2013, 41(4): 132-136.

DOI：10.3969/j.issn.1000-565X.2013.04.022

• Bifrequency
• Cavitation noise
• Computational analysis
• Double bubble
• Lighthill equations
• Pressure amplitudes
• Single bubbles
• Ultrasonic cavitation

Based on the single-bubble and double-bubble ultrasonic cavitation noise models derived respectively from the single-bubble and double-bubble dynamic equation and from the Lighthill equation, the effects of the initial bubble radius, the double-bubble distance, the sound pressure amplitude, the sound frequency and the bifrequency ultrasound on the cavitation noise are analyzed via Matlab programming. Calculated and analytical results show that (1) under the same initial conditions, the peak of the double-bubble cavitation noise is much higher than that of the single-bubble one, which means that the single-bubble and double-bubble cavitation noise curves are different form each other;(2) the initial radius, the sound pressure amplitude, the sound frequency and the bifrequency ultrasound all affect the single-bubble cavitation noise, especially the former two;(3) the cavitation noise reaches the maximum when the pressure amplitudes in the two components of the bifrequency ultrasound are equal;and (4) the initial radius and the sound pressure amplitude influence the double-bubble cavitation noise significantly while the effects of the sound frequency and the bifrequency ultrasound are almost ignorable.

• 出版日期2013-4
• 单位华南理工大学