关于湿度突然跃升对突发收缩器件中双组分液体流量影响的研究
Pushpender Chaudhary1, Sumana Ghosh1
1Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India.
Langmuir : the ACS journal of surfaces and colloids
|July 16, 2024
概括
这项研究表明,上游的疏水表面和下游的亲水表面最大限度地提高了液体-液体提取效率. 这种配置,结合面积变化,通过特定的流量模式和循环回收区来增强提取.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 流体动力学 流体动力学
- 分离过程 分离过程.
背景情况:
- 液体液体提取对于化学分离过程至关重要.
- 了解表面湿度和流域变化的影响对于优化提取效率至关重要.
- 现有的研究往往忽略了可湿性和几何转换的综合效应.
研究的目的:
- 通过实验研究表面湿度和流域突然变化如何影响液体-液体提取.
- 确定水友和疏水表面的最佳布局,以获得最大的提取效率.
- 阐明使用计算流体动力学 (CFD) 进行增强提取的基础流体物理学.
主要方法:
- 实验设置涉及相互连接的水友性 (玻璃) 和疏水性 (PTFE涂层) 毛细血管,具有不同的湿透性安排.
- 使用酸,烯和水作为测试液体,观察不同的流动模式 (泥,滴滴等). ) 的情况.
- 使用开放的CFD软件 (OpenFoam) 进行数值模拟,以分析区域变化界面上的流动动态.
主要成果:
- 在上游的疏水管和下游的疏水管实现了最大的提取效率.
- 由于流域的收缩,流的特定表面积增加了1.6至2.7倍.
- CFD模拟揭示了区域变化下游的循环区域,促进封装滴形成并增强流通.
结论:
- 表面的湿透性,特别是上游的疏水性配置,显著影响液体-液体提取性能.
- 流域的突然变化,加上湿度梯度,为增强的质量转移创造了有利的条件.
- 观察到的流体现象,包括再循环区域和封装滴,是了解和提高这种系统的提取效率的关键.
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