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Electrohydrodynamic stability: effects of charge relaxation at the interface of a liquid jet

Published online by Cambridge University Press:  29 March 2006

D. A. Saville
D. A. Saville
Affiliation:
Department of Chemical Engineering, Princeton University, Princeton, N.J. 08540
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Abstract

The interactions between electrical tractions at the interface of a liquid jet and instability phenomena are studied with emphasis on effects due to interfacial charge relaxation. Charge relaxation causes the oscillatory growth of a perturbation. When viscous effects are small, small fields tend to decrease the growth rate of the axisymmetric mode, up to a point, and precipitate instability of the non-axisymmetric modes. Still larger field strengths increase the growth rates of asymmetric as well as axisymmetric modes. Instabilities characterized by highfrequency oscillations appear to persist even though the charge relaxation phenomena may be quite rapid. When, on the other hand, viscous effects predominate the only unstable disturbance form is the axisymmetric one, although the manner of growth may be oscillatory.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 48 , Issue 4 , 27 August 1971 , pp. 815 - 827
Copyright
© 1971 Cambridge University Press

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