Electric field effect on a two-fluid interface instability in channel flow for fast electric times

The application of an electric field to a two-fluid layer in channel flow has been shown to be an effective way to destabilize microscale interfacial flows. Here, we perform a linear stability analysis of a flat interface between two leaky dielectric liquids flowing in a channel while also subjected...

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Bibliographic Details
Published inPhysics of fluids (1994) Vol. 20; no. 3
Main Authors Uguz, A. Kerem, Ozen, O., Aubry, N.
Format Journal Article
LanguageEnglish
Published Melville, NY American Institute of Physics 01.03.2008
Subjects
Applied fluid mechanics
Exact sciences and technology
Fluid dynamics
Fluidics
Fundamental areas of phenomenology (including applications)
Hydrodynamic stability
Interfacial instability
Physics
Pipe flow
Electric field effects
Hydrodynamic instability
Liquid liquid interface
Two layer medium
Modelling
Incompressible fluid
Immiscible fluid
Viscous fluids
Microfluidics
Relaxation time
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Summary:The application of an electric field to a two-fluid layer in channel flow has been shown to be an effective way to destabilize microscale interfacial flows. Here, we perform a linear stability analysis of a flat interface between two leaky dielectric liquids flowing in a channel while also subjected to an electric field parallel to the interface. It is shown that the analysis simplifies for fast electric charge relaxation times, in which case conditions for the electric field to be either stabilizing or destabilizing are derived analytically. These results are compared to those previously obtained for a normal electric field.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.2897313