毛细管填充在开放的矩形微通道中,其接触角度在空间上有所变化
Li-Hsuan Chang1, Satish Kumar1
1Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States.
Langmuir : the ACS journal of surfaces and colloids
|December 6, 2023
概括
研究人员修改了卢卡斯-沃什本模型,以研究不同接触角度的开放矩形微通道中的毛细血管流动. 他们发现,特定的接触角度变化可以控制流体填充动态,为微流体应用提供设计见解.
科学领域:
- 物理 物理学 物理
- 流体力学 流体力学 流体力学
- 材料科学 材料科学 材料科学
背景情况:
- 微通道中的毛细管流对于微流体,热交换器和印刷电子产品至关重要.
- 开放的矩形微通道提供可访问的内部,使它们对这些技术具有吸引力.
研究的目的:
- 为了研究空间变化的接触角度对开放的矩形微通道中的毛细血管流量的影响.
- 为分析这些复杂的流动场景,开发卢卡斯-沃什本模型的修改.
主要方法:
- 改进的卢卡斯-沃什本模型的开发.
- 分析了四个不同的接触角度变化的情况:均差异,横截面变化,单调长度变化和周期性长度变化.
主要成果:
- 最大填充速度对墙壁接触角度变化更为敏感.
- 截面接触角的变化可以得到平均值来简化模型.
- 单调的长度变化改变了短时间阴茎位置的动态.
- 定期的接触角度变化被平均均的接触角度有效地描述.
结论:
- 空间变化的接触角度显著影响微通道中的毛细血管填充动态.
- 了解这些变化可以设计受控的毛细血管填充.
- 在微通道流量分析中可以考虑自然发生的接触角度变化.
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