Opened Access Whipping of electrified liquid jets
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Author: Guerrero Millán, Joséfa
Rivero, Javier
Gundabala, Ventaka R.
Pérez-Saborid Sánchez-Pastor, Miguel
Fernández Nieves, A.
Department: Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos
Universidad de Sevilla. Departamento de Física Aplicada III
Date: 2014
Published in: Proceedings of the National Academy of Sciences of the United States of America, 111 (38), 13763-13767.
Document type: Article
Abstract: Weapply an electric field to amoderately conducting liquid surrounded by another coflowing liquid, all inside a glass-based microfluidic device, to study nonaxisymmetric instabilities.Wefind that the bending of the electrified jet results in a steady-state, helicoidal structure with a constant opening angle. Remarkably, the characteristic phase speed of the helicoidalwave only depends on the charge carried by the jet in the helicoidal region and its stability critically depends on the properties of the coflowing liquid. In fact, the steady-state helical structure becomes chaotic when the longest characteristic time is that of the inner liquid rather than that of the outer coflowing liquid. We also perform a numerical analysis to show that the natural preference of the jet is to adopt the conical helix structure observed experimentally.
Cite: Guerrero Millán, J., Rivero, J., Gundabala, V.R., Pérez-Saborid Sánchez-Pastor, M. y Fernández Nieves, A. (2014). Whipping of electrified liquid jets. Proceedings of the National Academy of Sciences of the United States of America, 111 (38), 13763-13767.
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URI: http://hdl.handle.net/11441/57437

DOI: 10.1073/pnas.1411698111

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