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arXiv 0910.3121physics.flu-dyn
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均匀DC电场中的液滴行为

Drop Behavior in Uniform DC Electric Field

Paul F. Salipante, Petia M. Vlahovska

摘要:

均匀电场中的液滴变形是一个经典问题。G.I.Taylor的开创性工作表明,对于弱传导介质,液滴流体经历环形流动,液滴采用长球形或扁球形形状,流动和形状与施加的场轴对称对齐。然而,最近的研究揭示了电导率低于周围介质的液滴的非轴对称旋转模式,类似于Quincke在19世纪观察到的固体介电粒子的旋转。这个流体动力学视频演示了三种行为模式。I)弱场中液滴内部的环形回流II)强场中的非轴对称流体旋转和III)强场中的液滴破碎。

英文摘要:

Drop deformation in uniform electric fields is a classic problem. The pioneering work of G.I.Taylor demonstrated that for weakly conducting media, the drop fluid undergoes a toroidal flow and the drop adopts a prolate or oblate spheroidal shape, the flow and shape being axisymmetrically aligned with the applied field. However, recent studies have revealed a nonaxisymmetric rotational mode for drops of lower conductivity than the surrounding medium, similar to the rotation of solid dielectric particles observed by Quincke in the 19th century. This fluid dynamics video demonstrates three behavioral modes. I) toroidal recirculation inside the drop in weak fields II) nonaxisymmetric fluid rotation in strong fields and III) drop breakup in strong fields.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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