滴滴在流性轴向变异几何梯度管中的运动
Zhiqiang Xiao1, Xiaoling Hu1,2, Di Wu3
1School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China.
Langmuir : the ACS journal of surfaces and colloids
|May 26, 2023
概括
研究了在轴向变化的几何梯度管 (AVGGTs) 中滴滴运动. 表面张力和内部负压驱动液滴自运输从大到小的开口,而维度分析预测停止位置的反向运动.
科学领域:
- 流体动力学 流体动力学
- 表面科学是一门学科.
- 材料科学 材料科学 材料科学
背景情况:
- 滴水运输是一种常见的自然现象,具有各种技术应用.
- 对于微流体学和材料加工来说,了解狭窄几何中的滴滴动力学至关重要.
研究的目的:
- 为了研究液滴运动在一个溶性轴向变异几何梯度管 (AVGGT).
- 分析滴滴自我运输和卡住的行为,在前进 (L到S) 和反向 (S到L) 方向.
- 开发AVGGTs中滴滴动态的理论模型和实验相关性.
主要方法:
- 使用简化的纳维埃-斯托克斯方程进行理论分析.
- 在不同的参数下对滴滴运动的实验研究.
- 维度分析以预测滴滴停止位置.
主要成果:
- 表面张力可以作为驱动力或阻碍力,基于滴滴几何和AVGGT.
- 负压诱导的桥梁液体力驱动自运输从大到小开口 (L到S).
- 对于S到L运动期间的滴滴停止位置建立了相关性.
结论:
- 该研究阐明了AVGGT中控制滴滴运动的机制,强调了表面张力和内部压力的作用.
- 理论和实验发现为控制渐变几何体中的滴滴传输提供了一个框架.
- 这项研究为设计利用受控滴滴运动的设备提供了见解.
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