单泡超声空化动力学仿真研究  

Simulation Study of Single⁃Bubble Ultrasonic Cavitation Dynamics

作　　者：孙佳 杨盛 郭凯旋 玉姣 SUN Jia;YANG Sheng;GUO Kaixuan;YU Jiao(Liaoning Provincial Key Laboratory of Novel Micro-Nano Functional Materials/School of Science,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁省新型微纳米功能材料研究重点实验室/辽宁石油化工大学理学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2025年第2期76-82,共7页Journal of Liaoning Petrochemical University

基　　金：国家自然科学基金项目(12074160);辽宁省自然科学基金面上项目(2024-MS-181);辽宁省教育厅基本科研项目(LJ212410148042)。

摘　　要：利用有限元分析软件COMSOL Multiphysics,模拟了单泡超声空化的动力学特性;通过求解考虑能量黏滞损耗和球形气泡振动引起的辐射阻尼的Rayleigh-Plesset模型,对超声正弦波、方波和三角波驱动下单一空化气泡在水中振动时的运动过程进行了仿真,分析了气泡半径、气泡壁的运动速度、气泡壁的动能和气泡内压力的变化。结果表明,在相同条件下,正弦波驱动稳定性最优;方波驱动具有最好的空化效果,但发生空化的时间最长;三角波的空化效果最弱;在三种波的驱动下,第1次塌缩时气泡壁的运动动能最大,在气泡塌缩到半径最小时气泡内压力最大;相较于方波和三角波驱动,正弦波驱动下气泡内的最大压力最大。The kinetic properties of single-bubble ultrasonic cavitation are simulated using the finite element analysis software COMSOL Multiphysics.The motion process of a single cavitation bubble driven by ultrasonic sinusoidal,square and triangular waves when vibrating in water is simulated by solving the Rayleigh-Plesset model which takes into account the energy viscous loss and the radiation damping caused by the vibration of the spherical bubble,and the curves of the changes of bubble radius,motion velocity and kinetic energy of the bubble wall and pressure within the bubble wall are analyzed.The results show that under the same conditions,the stability of sine wave drive is the strongest;square wave drive has the best cavitation effect but the longest cavitation time;triangular wave shows the weakest cavitation effect.Driven by three types of waves,the kinetic energy of motion of the bubble wall is the largest during the first collapse,and the maximum pressure inside the bubble occurs when the bubble collapses to its minimum radius.The maximum pressure inside the bubble is the greatest when driven by sinusoidal wave compared to square wave and triangular wave.

关 键 词：超声空化 单泡 有限元仿真 正弦波 方波 三角波 

分 类 号：O426[理学—声学]