微型毛细血管中的气液双相沉浸:对最小阻力半径的实验洞察
Heying Ding1, Wen Deng1, Fuquan Song2
1School of Civil Engineering, Southeast University, Nanjing 211189, China.
ACS omega
|February 16, 2026
概括
在多孔介质中的自发浸泡在最小的阻力半径下得到优化,增强紧密的形成中的液体回收. 这一发现有助于更好地理解毛细管驱动的运输和石油回收策略.
科学领域:
- 多相流在多孔介质中的多相流.
- 由毛细血管驱动的运输现象.
- 增强的石油回收技术
背景情况:
- 在紧密的形成中,自发的浸泡对于液体回收至关重要.
- 毛细体驱动多相传输在多孔介质.
- 像Lucas-Washburn这样的现有模型在复杂的场景中存在局限性.
研究的目的:
- 为了研究石英微管中的自发浸泡.
- 开发和验证一个双相流量模型.
- 确定影响浸泡效率的因素,并优化液体回收.
主要方法:
- 石英微管浸泡实验 (100-320微米) 使用煤油和空气.
- 开发和验证一个包括引力和惯性力在内的双相流模型.
- 使用毛细管,雷诺兹和邦德数进行无维分析.
主要成果:
- 与卢卡斯-瓦什本模型相比,一种新的两相流量模型实现了81.9%的平均误差减少.
- 浸泡时间显示对管半径的非单调依赖,表明最大效率的最小阻力半径.
- 管半径被发现是浸泡动态中占主导地位的因素,而界面张力影响了早期阶段的速度.
结论:
- 最小阻力半径是有效的毛细管驱动运输的关键长度尺度.
- 将毛孔尺寸分布调整到这个尺度可以增强紧密的水库中的液体吸收和石油回收.
- 这项研究为了解和改进液体回收过程提供了新的物理基础.
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