Rayleigh-Taylor instability in dielectric fluids

Joshi, Amey ; Radhakrishna, M. C. ; Rudraiah, N. (2010) Rayleigh-Taylor instability in dielectric fluids Physics of Fluids, 22 (6). 064102_1-064102_10. ISSN 1070-6631

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Official URL: http://pof.aip.org/resource/1/phfle6/v22/i6/p06410...

Related URL: http://dx.doi.org/10.1063/1.3435342


Force on dielectric fluids in the presence of a nonuniform electric field is shown to reduce their specific weights. An appropriately chosen field gradient makes the specific weights of superposed fluids equal and prevents Rayleigh-Taylor instability. We derive the dispersion relation for perturbation at the interface of superposed dielectric fluids, within limits of linear theory, successively for ideal, Newtonian, and those with stratified viscosity. A dimensionless dielectric number is shown to determine the stability of the arrangement.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Dispersion Relations; Electrohydrodynamics; Rayleigh-Taylor Instability; Viscosity
ID Code:47530
Deposited On:11 Jul 2011 14:05
Last Modified:11 Jul 2011 14:05

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