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Proceedings Paper

Early transition in microchannels under EDL effect
Author(s): Sedat Tardu
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Paper Abstract

The effect of the electric double layer (EDL) on the linear stability of Poiseuille planar channel flow is reported. It is shown that the EDL destabilizes the linear modes, and that the critical Reynolds number decreases significantly when the thickness of the double layer becomes comparable with the height of the channel. The planar macro scale Poiseuille flow is metastable, and the inflexional EDL instability may further decrease the macro-transitional Reynolds number. There is a good correspondence between the estimated transitional Reynolds numbers and some experiments, showing that early transition is plausible in microchannels under some conditions.

Paper Details

Date Published: 23 December 2003
PDF: 12 pages
Proc. SPIE 5345, Microfluidics, BioMEMS, and Medical Microsystems II, (23 December 2003); doi: 10.1117/12.523603
Show Author Affiliations
Sedat Tardu, LEGI Grenoble (France)

Published in SPIE Proceedings Vol. 5345:
Microfluidics, BioMEMS, and Medical Microsystems II
Peter Woias; Ian Papautsky, Editor(s)

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