In this paper, we investigate the pore structure and the impacts of Haines jumps on the change in preferential pathways (called the dynamic breakthrough) during fluid percolation through thin porous media. Two capillaries connected in parallel are used to represent a thin porous medium, and Haines jumps are observed through the formation of droplets. Using a droplet growth model and experimental visualisations, the change in preferential pathways is shown to be strongly influenced by the pore lengths, pore radii ratios, and droplet detachment volumes. This work provides a better understanding of the redevelopment of continuous fluid paths observed through thin porous media in electrochemical systems.

中文翻译：

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两个相连毛细管中的流体动力学突破：从静止状态到振荡状态

在本文中，我们研究了孔隙结构以及 Haines 跳跃对流体通过薄多孔介质渗透过程中优先路径（称为动态突破）变化的影响。两个并联的毛细管被用来代表一种薄的多孔介质，通过液滴的形成观察到海恩斯跳跃。使用液滴生长模型和实验可视化，显示优先路径的变化受孔长度、孔半径比和液滴脱离体积的强烈影响。这项工作为通过电化学系统中的薄多孔介质观察到的连续流体路径的再开发提供了更好的理解。