超声空化泡在不同激励条件下的非线性振动特性  

Nonlinear vibration characteristics of ultrasonic cavitation bubbles under different excitation conditions

作　　者：许龙[1,2] 刘政 姚昕锐 王召唤 沈阳 徐珂 XU Long;LIU Zheng;YAO Xinrui;WANG Zhaohuan;SHEN Yang;XU Ke(Department of Applied Physics,China Jiliang University,Hangzhou 310018,China;Key Laboratory of Intelligent Manufacturing Quality Big Data Tracing and Analysis of Zhejiang Province,China Jiliang University,Hangzhou 310018,China)

机构地区：[1]中国计量大学应用物理系,浙江杭州310018 [2]浙江省智能制造质量大数据溯源与应用重点实验室中国计量大学,浙江杭州310018

出　　处：《高校化学工程学报》2024年第5期735-743,共9页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(11574277,12204447)。

摘　　要：为了探究超声空化效果与声场中空化泡的非线性振动特性的关系,通过求解不同状态下空化泡非线性振动方程,得到气泡半径随时间的演化曲线、相图、庞加莱截面图、功率谱图和分叉图等描述气泡运动状态的图形。研究了在三角波和正弦波驱动下不同频率和声压对空化泡非线性振动规律的影响。结果表明:在三角波和正弦波的驱动下,气泡呈现出不同的运动特性;在三角波驱动下,气泡的振动更容易进入混沌状态,并且发生混沌状态的频率范围更宽,这将有利于扩大超声空化在液体处理应用中的频率适用范围。In order to investigate the relationship between cavitation effects and nonlinear vibration characteristics of cavitation bubbles in ultrasonic fields,a nonlinear vibration equation of cavitation bubbles under different states was solved,and the evolution curve of bubble radius,phase diagram,Poincarésection diagram,power spectrum diagram and bifurcation diagram that describing the motion state of bubbles over time were obtained.The effects of different frequencies and sound pressures on the nonlinear vibration characteristics of cavitation bubbles under triangular wave and sine wave excitation were studied.Under triangular wave excitation,bubble vibration is more prone to enter a chaotic state,and the frequency range of chaotic states is wider,which will facilitate expanding the frequency range of ultrasonic cavitation in liquid processing applications.

关 键 词：超声空化 非线性振动 混沌 超声液体处理 

分 类 号：O426[理学—声学]