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表面湿度的应用,以控制撞击滴滴的传播
Yating Hu1,2, Junfei Ou1, Alidad Amirfazli2
1School of Materials Engineering, Jiangsu University of Technology, Changzhou, Jiangsu 213001, China.
Langmuir : the ACS journal of surfaces and colloids
|February 1, 2024
概括
这项研究通过控制表面的湿透性来纠正滴滴撞击期间不对称的液体片的扩散. 一个新的湿地图指导表面修改以恢复辐射对称性,经过实验验证.
科学领域:
- 流体动力学 流体动力学
- 表面科学是一门科学.
- 材料科学是一种材料科学.
背景情况:
- 滴滴对固体表面的影响通常会导致辐射对称的扩散.
- 不对称的扩散可能是由于触点速度而发生的,导致非均的斑块形状.
- 之前的研究还没有探讨如何恢复本质上不对称的拉梅拉的对称性.
研究的目的:
- 在理论和实验上证明一种方法,以恢复对称性,以不对称地扩散液体拉梅拉.
- 开发一个用于映射所需的回退速度的框架,以实现对称的扩散.
- 为了验证设计表面修改对纠正不对称扩散的有效性.
主要方法:
- 基于泰勒-库利克理论开发了一个理论框架,用于绘制对称性恢复所需的回退速度.
- 创建了一个湿地图,显示局部表面可湿性要求.
- 创建了一个实验性的"补丁",基于湿地图的湿度对比区域.
- 在各种韦伯数条件下对水滴撞击表面进行实验.
主要成果:
- 理论框架成功地绘制了需要的回退速度,以恢复对称性.
- 模拟结果证实了框架的有效性,并确定了其适用性限制.
- 实验结果表明",补丁"设计有效地纠正了水滴的不对称扩散.
- 该方法已对高达300的韦伯数和0.51至2.04之间的We/We比进行了验证.
结论:
- 控制局部可湿度是一种有效的策略,可以恢复不对称地扩散的液体板块的对称性.
- 开发的湿地图和"补丁"设计为操纵滴滴传播动态提供了实用的方法.
- 这项工作提供了一种新的解决方案,用于控制液滴撞击场景中的液体叶片对称性.
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