Study on Ultrasonic Cavitation Bubble Dynamics Based on Improved Keller-Miksis Model
JIA Huizhu, DING Ting
School of Information and Communication Engineering, Shanxi Provincial Key Laboratory of Biomedical Imaging and Imaging Big
Data, North University of China, Taiyuan Shanxi 030051, China
Abstract：Objective Ultrasonic cavitation mechanism is the key to many ultrasonic treatment. In order to improve the efficiency
of ultrasonic treatment with cavitation effect as the mechanism, it is necessary to explore the dynamic characteristics of cavitation
bubbles under different parameters. Methods An improved simulation model of a single ultrasonic cavitation bubble in liquid was
established based on the Keller-Miksis model, which considering the influence of heat transfer mode on the vibration characteristics
of cavitation bubbles and the fact that gas can’t be compressed indefinitely. The dynamic process of ultrasonic cavitation bubble
under different heat transfer process, cavitation bubble parameters, liquid parameters and sound field parameters was analyzed.
Results The dynamic processes of ultrasonic cavitation bubble were basically the same under the three different heat transfer modes
of isothermal, isothermal-adiabatic and adiabatic. When the initial radius of cavitation bubble was smaller than the resonance radius,
the ultrasonic cavitation effect could be enhanced. With the increase of liquid surface tension, liquid viscosity coefficient and liquid
saturated vapor pressure, the ultrasonic cavitation effect decreased. The maximum transient vibration radius of cavitation bubbles
decreased obviously with the increase of excitation frequency and increased obviously with the increase of sound pressure amplitude
on the other hand. Conclusion In this paper, a single bubble dynamic simulation model based on Keller-Miksis model is constructed,
which is closer to the actual situation, and the dynamic behavior of ultrasonic cavitation bubbles under different parameters is
discussed. Which provides an effective reference for the study of ultrasonic cavitation transient physics and the selective enhancement
or inhibition of cavitation effect to achieve accurate and efficient ultrasonic treatment.
贾蕙竹，丁婷. 基于改进的Keller-Miksis模型的超声空化气泡动力学研究[J]. 中国医疗设备, 2022, 37(11): 28-33.
JIA Huizhu, DING Ting. Study on Ultrasonic Cavitation Bubble Dynamics Based on Improved Keller-Miksis Model. China Medical Devices, 2022, 37(11): 28-33.
