通过多孔介质进行静止两相流动的增强反应动力学
Xueyi Zhang1,2, Zhi Dou1, Mayumi Hamada3,4
1School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China.
Environmental science & technology
|January 8, 2025
概括
多相流动力学显著影响多孔介质中的混合驱动反应. 产品形成加速超出扩散时间,并取决于非湿化阶段的流量,与之前的不和流量发现不同.
科学领域:
- 环境科学环境科学
- 化学工程是化学工程的组成部分.
- 地质物理学 地质物理学
背景情况:
- 了解多相流和多孔介质中的反应运输对于环境和工业应用至关重要.
- 非湿不混合的相可以是不移动的 (不和流) 或移动的 (多相流).
- 之前的研究表明,在不和条件下,反应产品的变化趋势基于流量或Péclet数.
研究的目的:
- 研究多相流动力学对混合驱动反应的影响.
- 为了解决研究这些相互作用的实验和数值挑战.
- 评估产品形成如何受到静止两相流量条件的影响.
主要方法:
- 使用了优化的化学发光反应.
- 采用了一种用于分离反应剂注射的实验设置.
- 保持一个静止的两相流系统.
主要成果:
- 反应产物质量在扩散时间之外的增长速度比Fickian更快.
- 全球动力学最初上升,然后随着由于非湿相位移的波动而下降.
- 产品形成取决于给定湿相流速的非湿相流速.
结论:
- 与不和流相相比,多相流显著改变了反应运输.
- 非湿相流量是影响反应产物形成的关键参数.
- 获得了对复杂的多孔介质流和反应动态的实验性见解.
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