| 杨日福,张凡,耿琳琳.双频超声激励空化泡动力学耦合因素研究*[J].,2016,35(4):364-368 |
| 双频超声激励空化泡动力学耦合因素研究* |
| Research on the coupling factors in cavitation bubble dynamic driven by dual-frequency ultrasound * |
| 投稿时间：2015-10-14 修订日期：2016-06-17 |
| 中文摘要: |
| 研究双频超声各因素对空化气泡动力学影响,找出最佳的耦合效果。对Rayleigh-Plesset方程模型进行修改,并利用MATLAB提供的Runge-Kutta算法进行数值求解,考察频率、相位差,声强的不同耦合对双频超声激励空化泡动力学过程的影响。结果表明：在其他条件相同的情况下,双频复合超声与单频超声相比,空化泡运动过程中的最大半径较大,空化泡半径收缩的变化率也较大,同时可知,采用相同频率低频超声组合的空化强度最强；保持双频超声初相位相同,避免两者反相,以及超声声强组合平均分配等,有利于提高空化效果。当采用不同频率组合激励时,要根据实验条件选择合适的双频超声频率组合、相位差和声强的分配,才能起到协同强化作用。 |
| 英文摘要: |
| In order to find the best coupling effect, the effects of some parameters for dual frequency ultrasound cavitation dynamics are studied. The Rayleigh-Plesset equation model is modified and the numerical result is obtained by using the Runge-Kutta algorithm provided by MATLAB software. Effects of cavitation bubble dynamic driven by dual-frequency ultrasound under different coupling conditions like frequency, phase difference and ultrasonic intensity are investigated. The results show that the dual frequency ultrasound could, under the same condition, increase the cavitation bubble’s maximum radius and the shrinkage rate of radius by comparison with single frequency ultrasound, at the same time, it can be known that the cavitation intensity becomes stronger by combining low and the same low frequency ultrasound in dual frequency ultrasound; keeping same-phase, avoiding phase inversing and distributing the total ultrasonic intensity equally help to improve cavitation effect. When taking different frequency ultrasonic, the dual frequency ultrasound should choose suitable coupling factors according to experimental conditions in order to get a significant synergetic effect. |
| DOI：10.11684/j.issn.1000-310X.2016.04.012 |
| 中文关键词: 双频超声,空化泡,动力学模型,数值模拟,耦合因素 |
| 英文关键词: Dual frequency ultrasound, Cavitation bubble, Dynamic model, Numerical simulation, Coupling factors |
| 基金项目:国家自然科学基金(11464002),广东省省部产学研结合项目(2013B090600034) |
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| 摘要点击次数: 2372 |
| 全文下载次数: 1996 |
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