在带有平面波湿度模式和变形的基板上的方向滴
Josua Grawitter1, Holger Stark1
1Technische Universität Berlin, Institut für Theoretische Physik, Straße des 17. Juni 135, 10623 Berlin, Germany. j.grawitter@tu-berlin.de.
Soft matter
|March 22, 2024
概括
研究人员通过在基质的湿透性或变形中使用移动波来探索转向状滴. 滴滴表现出明显的冲浪或摇摆动作,临界速度可以根据大小进行分类.
科学领域:
- 流体动力学 流体动力学
- 微流体学 微流体学
- 表面科学是一门科学.
背景情况:
- 在微流体应用中,有针对性的液滴运输至关重要.
- 控制水滴在表面上的运动是一个活跃的研究领域.
研究的目的:
- 研究使用移动波来引导静止滴的方法.
- 在不同的波浪条件下分析滴滴运动模式和过渡.
主要方法:
- 使用边界元素方法进行数值模拟.
- 解决斯托克斯方程的流体流动在移动的水滴.
- 滴滴运动动态和分叉的分析.
主要成果:
- 观察到两种不同的滴滴运动模式:在低波速上冲浪,在更高的速度上摇摆.
- 确定了一个关键的波速,与SNIPER分叉相关.
- 滴滴速度的行为对于可湿性波与基质变形波不同.
结论:
- 这项研究提供了通过移动波的滴滴转向机制的见解.
- 可以使用非均振荡器模型来建模观察到的现象.
- 临界波速对滴滴半径的依赖,为以大小为基础的滴滴分类提供了基础.
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