双泡模型共振频率的超声空化动力学研究

The theoretical study of ultrasonic cavitation dynamics of natural frequency of oscillation of double gas bubbles

该研究旨在研究双泡模型的自然共振频率对超声空化的影响,通过理论计算研究了自然共振频率的影响因素,以及单频超声和双频超声与自然共振频率的关系。研究结果表明:气泡初始半径是影响自然共振频率的主要因素;低频驱动下的非线性波动程度会比高频的更加剧烈,当驱动频率等于气泡自然共振频率时,超声空化的效果更好;双频超声取气泡自然共振频率时超声空化效果远远优于单频超声驱动。该研究在超声医学和理解超声空化特性方面有着重要的意义。

This study aimed to investigate the effects of natural frequency of oscillation of double gas bubbles on ultrasonic cavitation.According to theoretical calulation,we study the influnecing factors of natural resonance frequency and the relationship between natural resonance frequency and single frequency ultrasound and dual frequency ultrasound.The results indicated that the initial radius of bubble is the main factor affecting the natural resonance frequency Nonlinear fluctuations driven by low frequencies are more severe than those driven by high frequencies.When the driving frequency is equal to the natural resonant frequency of the bubble,the ultrasonic cavitation effect is better.The effect of ultrasonic cavitation is much better than that of single frequency ultrasonic drive when the natural resonance frequency of bubbles is obtained by dual-frequency ultrasonic.This study is of great significance in ultrasound medicine and understanding of ultrasonic cavitation properties.