Mixing in a drop moving through a serpentine channel: A computational study
Mixing in a drop moving through a serpentine channel: A computational study
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DOI：
10.1063/1.1992514
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发表时间：
2005-07-01
影响因子：
4.6
通讯作者：
Stone, HA
中科院分区：
文献类型：
--
作者：
Muradoglu, M;Stone, HA
在二维条件下，对液滴在弯曲通道中的混沌混合进行了计算研究。忽略分子混合，只考虑由于混沌平流的混合。被动示踪粒子被用来可视化的混合模式和混合量化两种不同的方法。结果发现，这两种定量方法是一致的，以及与对方的视觉观察。研究了各种无因次参数对混合质量的影响，发现毛细管数、液滴相流体粘度与周围流体粘度之比以及液滴相对于平均通道宽度的相对尺寸是影响混合的最关键参数。混合被发现是弱依赖于雷诺数。(c)2005年美国物理学会。
The chaotic mixing in a drop moving through a winding channel is studied computationally in a two-dimensional setting. The molecular mixing is ignored and only the mixing due to the chaotic advection is considered. Passive tracer particles are used to visualize the mixing patterns and mixing is quantified by two distinct methods. It is found that both the quantification methods are consistent with visual observations as well as with each other. The effects of various non-dimensional parameters on the quality of mixing are studied and it is found that the capillary number, the ratio of the drop phase fluid viscosity to that of the ambient fluid and the relative size of the drop compared to the average channel width are the most critical parameters influencing the mixing. The mixing is found to be weakly dependent on Reynolds number. (c) 2005 American Institute of Physics.