Collision characteristics of droplet pairs with the presence of arriving distance differences
Collision characteristics of droplet pairs with the presence of arriving distance differences
复制标题
存在到达距离差异的液滴对的碰撞特性
DOI：
10.1016/j.jiec.2018.09.017
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发表时间：
2019
影响因子：
6.1
通讯作者：
Yan Pang
中科院分区：
文献类型：
--
作者：
Xiang Wang;Zhaomiao Liu;Yan Pang
在 T 形连接处观察到液滴对的四种碰撞行为，并通过考虑到达距离差、液滴长度和毛细管数来构建相图。显示了聚结和分裂的临界条件。异步液滴对的主要聚结方式是不同的，并且确认了两个液滴被拉开时发生聚结的原因。展示了各种液滴对前盖的运动，以显示它们渗透到下游通道的不同程度的竞争，并通过比较获得有利于聚结的优势。
Four collision behaviors are observed for droplet pairs at a T-junction and phase diagrams are constructed by considering the arriving distance difference, the droplet length and the capillary number. Critical conditions for both coalescence and splitting are shown. The main coalescence regime is varied for asynchronous droplet pairs and the cause of the coalescence which occurs while two droplets are pulled apart is confirmed. Movements of the front caps of various droplet pairs are exhibited to show their different degrees of competitions to penetrate into the downstream channel and the advantage that favors coalescence is acquired by comparison.