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超声对近壁微气泡溃灭过程的影响*

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王舰航,陈韬厚,包福兵,王月兵.超声对近壁微气泡溃灭过程的影响*[J].,2020,39(3):329-335
超声对近壁微气泡溃灭过程的影响*
The effect of ultrasound on the collapse of near-wall microbubble
投稿时间：2019-08-07修订日期：2020-04-27
中文摘要:
近壁微气泡溃灭特性的深入研究对靶向给药和基因治疗等技术具有较好的指导作用。本论文基于数值模拟技术，采用有限体积法结合流体体积模型（VOF）对超声作用下的近壁微气泡溃灭特性进行了研究，分析了超声对近壁微气泡溃灭动力学过程的影响。结果表明气泡溃灭最大射流速度与近壁距离和超声频率成正比，与气泡初始半径成反比；近壁气泡的二次溃灭最大射流速度大于一次溃灭，二次溃灭的作用更加明显。超声参数对近壁气泡溃灭过程存在较大影响，本论文的研究为超声在医学上的应用提供了依据。
英文摘要:
Deep understanding of the characteristics of near-wall microbubble collapse has an important influence on targeted drug delivery and gene therapy. Based on the numerical simulation, the finite volume method together with the Volume Of Fluid (VOF) model were carried out to investigate the characteristics of near-wall microbubble collapse. The effect of ultrasound on the collapse process is studied in detail. The results show that the maximum jet velocity of microbubble is proportional to the distance and the ultrasonic frequency, but inversely proportional to the initial bubble radius. The maximum velocity of bubble second-collapse is larger than that of the first collapse, which means the impact of the second-collapse is more important. In this paper, the mechanism of near-wall microbubble collapse under ultrasonic field is further revealed, which provides a basis for ultrasonic application in medical treatment.
DOI：10.11684/j.issn.1000-310X.2020.03.002
中文关键词:超声，微气泡，空化，溃灭，数值模拟
英文关键词:Ultrasound, Microbubble, Cavitation, Collapse, Numerical simulation
基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目）
作者单位E-mail
王舰航中国计量大学p1702085248@cjlu.edu.cn
陈韬厚中国计量大学p1802085210@cjlu.edu.cn
包福兵中国计量大学dingobao@cjlu.edu.cn
王月兵中国计量大学wyb_1963@163.com
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