The collision dynamics of a Taylor drop and a Taylor bubble is investigated in an immiscible surrounding liquid. The interaction of both the fluidic entities is studied using experiments and simulation in a vertically aligned Hele-Shaw cell. The steady rise of the bubble and fall of the drop are followed by a deceleration regime where their velocity has decreased due to the pressure imposed by the leading interfaces, indicated by the change in the curvature of their tip. Subsequently, the rapid outward expansion of the bubble has caused the swelling of the tip of the drop. The drop swell has then grown exponentially similar to Rayleigh–Taylor instability and resulted in a split of the bubble into two volumes.

中文翻译：

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Hele-Shaw 单元中泰勒泡和泰勒落的逼近和破裂

在不混溶的周围液体中研究了泰勒液滴和泰勒气泡的碰撞动力学。在垂直排列的 Hele-Shaw 单元中使用实验和模拟来研究两种流体实体的相互作用。气泡的稳定上升和液滴的下降之后是减速状态，其中由于前导界面施加的压力，它们的速度降低，由其尖端曲率的变化表示。随后，气泡迅速向外膨胀，导致液滴尖端膨胀。液滴膨胀随后呈指数级增长，类似于瑞利-泰勒不稳定性，并导致气泡分裂为两个体积。