在刚性管中的火花诱导的化气泡的崩行为
Jie Li1, Maolin Zhou1, Jing Luo1
1State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China.
Ultrasonics sonochemistry
|February 7, 2024
概括
管子尺寸显著影响了化气泡的行为和微喷气的形成. 较小的管道增加了泡周期,而较大的管道则使其稳定. 微射速受管径和气泡接近程度的影响.
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:
- 化气泡发生在医疗和工业应用中.
- 了解狭窄空间中的泡动态对于优化这些过程至关重要.
研究的目的:
- 为了研究刚性圆管参数对化泡行为的影响.
- 分析管子长度,直径和气泡管口距离对气泡形态和微喷气特性的影响.
主要方法:
- 在脱离离子水中使用低压放电诱导化气泡.
- 用高速摄像头观察泡形态和动态.
- 分析微射流的形成和速度与管子几何关系.
主要成果:
- 增加管道长度会延长泡期,特别是在较窄的管道中.
- 泡期在直径较大的管中稳定 (半径比>4.8) 并接近自由场行为.
- 微射速随着管径的增加 (对于非维长度<3.5) 和气泡接近管壁而下降.
结论:
- 管的几何学极大地影响了洞穴气泡动力学和相关的微喷气.
- 这些发现对提高向药物输送和工业微型的效率有影响.
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