Early transition in microchannels under EDL effect

Sedat Tardu

doi:10.1117/12.523603

23 December 2003 Early transition in microchannels under EDL effect

Sedat Tardu

Proceedings Volume 5345, Microfluidics, BioMEMS, and Medical Microsystems II; (2003) https://doi.org/10.1117/12.523603
Event: Micromachining and Microfabrication, 2004, San Jose, California, United States

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.

Citation Download Citation

Sedat Tardu "Early transition in microchannels under EDL effect", Proc. SPIE 5345, Microfluidics, BioMEMS, and Medical Microsystems II, (23 December 2003); https://doi.org/10.1117/12.523603

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