Mode selection on breakup of a droplet falling into a miscible solution
Mode selection on breakup of a droplet falling into a miscible solution
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液滴落入混溶溶液中的破碎模式选择
DOI：
10.1103/physrevfluids.4.013603
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发表时间：
2018
影响因子：
2.7
通讯作者：
Michiko Shimokawa and Hidetsugu Sakaguchi
中科院分区：
文献类型：
--
作者：
Garmon Savannah;Noba Kenichi;Michiko Shimokawa and Hidetsugu Sakaguchi
当密度相对较高的液滴落入密度相对较低的可混溶溶液中时，液滴会自发破裂。我们研究了两种溶液、粘度和液滴半径之间存在多种密度差异的实验中的破碎次数。即使在相同的实验条件下，众数也具有分布。我们提出了一种基于线性瑞利-泰勒不稳定性和液滴变形的涡环不断增长的半径的简单模式选择模型。该模型给出了概率分布以及无量纲参数与平均值之间的关系，与实验结果一致。
When a droplet with a relatively high density falls into a miscible solution with a relatively low density, the droplet breaks up spontaneously. We investigated the numberof breakup in experiments with several density differencesbetween two solutions, viscosities, and droplet radii. The mode numberhas a distribution even under the same experimental conditions. We propose a simple model of mode selection based on the linear Rayleigh-Taylor instability and the growing radius of a vortex ring deformed from the droplet. The model provides the probability distributionand a relationship between the nondimensional parameterand the average value of, which are consistent with experimental results.