在纤维枢纽下悬浮的水滴
1Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
Langmuir : the ACS journal of surfaces and colloids
|June 4, 2025
概括
这项研究研究了光纤枢纽上的液滴保留,揭示了基于纤维数量的两个不同的模式. 最大滴滴体积是由纤维数量和不稳定性决定的,这对于理解湿现象至关重要.
科学领域:
- 表面科学和流体动力学
- 材料科学与工程 材料科学与工程
背景情况:
- 滴滴纤维相互作用在自然和工程中具有重要意义.
- 研究主要集中在单纤维或双纤维系统上.
- 纤维枢纽的液滴保留能力仍未得到充分探索.
研究的目的:
- 为了研究光纤枢纽的液滴保留能力.
- 开发模型,预测光纤枢纽上的最大滴滴体积.
- 为了理解随着纤维数量的增加而变化的滴水行为.
主要方法:
- 开发用于滴水体积预测的分析和半经验模型.
- 使用实验数据验证模型.
- 基于接触线固定和雷利-泰勒不稳定性的滴滴稳定机制的分析.
主要成果:
- 纤维枢纽上的最大滴滴量表现出基于纤维数 (n) 的两个不同的模式.
- 关键纤维数 (n*) 标志着模式之间的过渡.
- 方案I (n ≤ n*) 显示纤维数量增加的体积,由三相接触线钉定.
- 方案II (n > n*) 显示了一个体积平原,由雷利-泰勒不稳定性支配,类似于平面.
结论:
- 纤维枢纽具有有限的容量来保留液滴,这取决于纤维数量.
- 在n*的过渡意味着主导不稳定机制的变化.
- 这些发现为光纤组件上的滴滴行为提供了预测框架.
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