The coupled motions of bubbles in ultrasonic field

• 作者: LIN Shuyu WANG Chenghui
• 来源期刊: 声学学报：英文版
• 学科: 工学
• 关键词: 气泡分布 超声场 相互作用力 径向振动 耦合 二次辐射 动态响应 振动模态
• 年，卷（期）: 2012,（2）
• 页码范围: 122-132
• 页数: 11页
• 分类号: TS195.5|TS202.3
• 语种: 英文

摘要

The dynamic responses of bubbles in ultrasonic field include the radial vibration, translation, and their interactions. Based on the radial vibration modal where the secondary radiation of neighboring bubbles was considered, and interaction forces of bubbles, the coupled motions of two bubbles with different size in a plane ultrasonic field was simulated numerically. The results show that the radial vibration of a big bubble has natural properties and its translation velocity is rapid relatively. The behavior and distribution of bubbles was observed experimentally by using high speed photography. It is shown that the big bubbles translate rapidly in bubble clouds and vibrate radially with small-amplitude. On the other hand, the phenomena of attraction and coalescence among bubbles is observed, which may attribute to the effects of secondary radiation between neighboring bubbles.