混合电结构控制的数值模拟,用于 Ribbed T-Junction 微通道中的微滴形成
1School of Science, Shanghai Institute of Technology, Shanghai 201418, China.
Micromachines
|July 30, 2025
概括
本研究介绍了一种使用电场和肋骨结构的混合控制策略,以精确控制微流体设备中的微滴形成. 这些发现使得能够优化滴滴大小,以提高各种应用中的性能.
科学领域:
- 微流体学 微流体学
- 化学工程是化学工程的重要组成部分.
- 生物医学是生物医学.
背景情况:
- 微滴形成对于化学工程,生物医学和能源应用至关重要.
- 精确控制滴滴大小和形成动态对于优化微流体设备性能至关重要.
研究的目的:
- 探索一种混合控制策略,将主动电场和被动肋骨结构结合起来.
- 在电场下调节微滴形成的T结微通道.
主要方法:
- 使用相场方法进行数值模拟.
- 分析电毛细血管数 (Cae) 和肋骨高度 (a/wc) 对滴滴形成的影响.
- 调查不同的流动模式:解锁,部分锁定和完全锁定.
主要成果:
- 增加Cae过渡流程,通过增加墙壁接触和剪切应力来减少滴滴大小.
- 增加肋骨高度会使饮食从完全固定到解锁,并线性地减少滴滴大小.
- 开发了一种新的经验相关性,以根据肋骨高度和流速比率来预测滴滴大小.
结论:
- 混合控制策略有效调节微滴形成.
- 电场和肋骨结构可以调节滴滴大小.
- 拟议的经验相关性有助于设计微流体系统,以满足特定的滴滴生成需求.
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