Drop Behavior in Uniform DC Electric Field

Details Drop Behavior in Uniform DC Electric Field Drop Behavior in Uniform DC Electric Field

2009-10-16

arxiv.org/abs/0910.3121v1

Physics

Fluid Dynamics

APS DFD Gallery of Fluid Motion 2009

Scientific paper

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.

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