Stability of an Electrified Liquid Jet

Abstract
A capillary wave of the appropriate wavelength will cause a jet to break up into a stream of uniform‐sized droplets. In this paper, a theoretical expression for droplet size, radius, and spacing in terms of the jet parameters and applied frequency is derived and verified experimentally. For a given jet radius and velocity, the droplet size can be varied from its minimum value, rmin, to approximately 1.6rmin by varying the driving frequency. Also, a theoretical expression for the charge on droplets resulting from the disintegration of a charged jet is shown to agree with the measured value of droplet charge.

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