Evolution of neutral and charged droplets in an electric field
Evolution of neutral and charged droplets in an electric field
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DOI：
10.1063/1.2980030
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发表时间：
2008-09-01
影响因子：
4.6
通讯作者：
Vantzos, O.
中科院分区：
文献类型：
--
作者：
Fontelos, M. A.;Kindelan, U.;Vantzos, O.
我们研究了一个非常粘性和导电流体的滴的演化下的外部电场的影响。液滴可以是中性的，或者可以带有一定量的电荷。如果外部电场和总滴电荷都足够小，那么根据泰勒的观察，就会形成扁长球形。对于足够大的电荷和/或外部场的自相似锥状奇点的发展机制不同于泰勒的预测。在恒定电场中，不带电和带电液滴的圆锥的开口半角通常为30 S左右，对粘度比的依赖性非常小，并且与总电荷和外场无关。我们还讨论了尖端附近的电场和速度场的结构。(C)2008年美国物理学会。
We study the evolution of drops of a very viscous and conducting fluid under the influence of an external electric field. The drops may be neutral or may be charged with some amount of electric charge. If both the external electric field and total drop charge are sufficiently small, then prolate spherical shapes develop according to Taylor's observations. For sufficiently large charge and/or external field a self-similar conelike singularity develops in a mechanism different from Taylor's prediction. The opening semiangle of the cones both for uncharged and charged drops in a constant electric field is typically around 30 S with a very slight dependence on the viscosity ratio and independence from both total charge and external field. We also discuss the structure of electric and velocity fields near the tip. (C) 2008 American Institute of Physics.