Bifurcation of droplet flows within capillaries
Bifurcation of droplet flows within capillaries
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DOI：
10.1103/physreve.74.036311
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发表时间：
2006-09-01
影响因子：
2.4
通讯作者：
Garstecki, Piotr
中科院分区：
文献类型：
--
作者：
Jousse, Fabien;Farr, Robert;Garstecki, Piotr
液滴通过微通道网络的流动与简单流体的流动显着不同。我们的报告重点关注单个液滴通过最简单的网络的路径：一个分成两个臂的通道，随后又重新组合。这个简单的系统表现出复杂的流动模式：周期性的和不规则的，具体取决于液滴进入“环路”的频率。数值模型解释了这些结果，并显示了由高复杂性区域分隔开的规则图案区域。我们的结果引发了有关流体离散元素通过网络的流动动力学的新问题，并指出了设计对液滴进行操作的集成微型实验室的潜在机会和困难。
Flows of droplets through networks of microchannels differ significantly from the flow of simple fluids. Our report focuses on the paths of individual droplets through the simplest possible network: a channel that splits into two arms that subsequently recombine. This simple system exhibits complex patterns of flow: both periodic and irregular, depending on the frequency at which the drops are fed into the "loop." A numerical model explains these results and shows regions of regular patterns separated by regions of high complexity. Our results elicit new questions regarding the dynamics of flow of discrete elements of fluids through networks, and point to potential opportunities and difficulties in the design of integrated mini-laboratories operating on droplets.