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Updated: Jan 10, 2026

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对称和不对称的T结点滴滴形成的数值研究

Fang Li¹, Feng Wu¹, Shuying Wu¹

¹School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China.

Langmuir : the ACS journal of surfaces and colloids

|November 27, 2025

概括

不对称的T结通过改变流量模式来增强滴水形成控制. 降低宽度比率扩大滴滴和挤压模式,提高滴滴分离效率和可控性.

科学领域:

流体动力学流体动力学
微流体学微流体学
化学工程是化学工程的重要组成部分.

背景情况:

了解滴滴形成对于微流体应用至关重要.
T-junctions 是用于滴滴生成的常见微流体设备.
不对称的设计可以为滴水特性提供独特的控制.

研究的目的:

研究在不对称的T结处的流体流动和滴滴形成动态.
分析结构不对称性对滴滴特性的影响.
探索诸如宽度比,粘度比和表面湿透性等参数的影响.

主要方法:

我们使用了数值模拟.
用相场方法来模拟两相流动.
研究了各种几何配置和流体特性.

主要成果:

不对称的结构显著改变滴滴流动的特性.
宽度比率的下降会扩大滴水和挤压系统,从而加强控制.
观察到上游压力增加,宽度比较低.
滴滴模式的突然结构变化增强了连续相速和粘性力,改善了滴滴分离.
粘度比影响过渡到喷射模式,但通道加速效应更为主导.

结论:

与对称的设计相比,不对称的T结提供了对滴滴形成的增强控制.
宽度比是优化滴滴生成和分离效率的关键参数.
表面的湿透性和粘度比也在滴水形成动态中起着重要作用.

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