根据需求,通过自由和刚性边界布局,控制化气泡崩和喷气形成
Yurong Sun1, Yuzhe Fan2, Zhifeng Yao3
1College of Water Resources and Civil Engineering, China Agricultural University, QingHua EastRoad 17, Beijing, 100083, Beijing, China; Faculty of Natural Sciences, Institute for Physics, Department Soft Matter, Otto von Guericke University Magdeburg, Universitätsplatz 2, Magdeburg, 39106, Saxony-Anhalt, Germany.
Ultrasonics sonochemistry
|September 24, 2025
概括
在毛细血管开口附近喷射化泡的方向是可控制的. 这项研究表明,隔离距离如何影响喷射,导致独特的流动模式和冲击波放大.
科学领域:
- 流体动力学 流体动力学
- 声学 声学 在声学方面
- 微流体学 微流体学
背景情况:
- 在崩过程中,化气泡会产生高速的微喷气.
- 喷射方向通常朝着刚性边界或远离自由表面.
- 了解接口附近的泡动态对于各种应用至关重要.
研究的目的:
- 为了实验性地控制空心气泡在部分填充的毛细血管附近的喷射方向.
- 为了研究非维的隔离距离对泡崩动态的影响.
- 探索独特的流体现象,包括中性崩和体泡形成.
主要方法:
- 在毛细血管附近化气泡崩的实验观测.
- 修改的雷利方程用于模拟气泡的辐射动力学.
- 可压缩流体体积 (VOF) 方法用于全流场模拟.
主要成果:
- 喷射方向可以通过调整非维的离距离来控制.
- 中性崩会呈现球形对称流动或体泡形成.
- 体泡形成证明了冲击波放大.
结论:
- 非维度的脱离距离是控制化气泡喷射的关键参数.
- 部分填充的毛细血管可以与化气泡表现出独特的水力动力相互作用.
- 观测到的现象,如体泡和冲击波放大,为高能量声学事件提供了洞察力.
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