Particle image velocimetry studies of an incipient spot in the Blasius boundary layer

Banerjee, AS and Mandal, AC and Dey, J (2006) Particle image velocimetry studies of an incipient spot in the Blasius boundary layer. In: Experiments In Fluids, 40 (6). pp. 928-941.

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Abstract

Spatial evolution of a small amplitude localized disturbance introduced into the laminar boundary layer of a flat plate has been studied experimentally using the particle image velocimetry (PIV) technique. PIV data have been acquired in the spanwise and wall normal planes. Long and well defined high and low speed streaks are seen in the spanwise plane. The number of streaks are found to increase in the downstream direction. Breathing mode type oscillation of the boundary layer is observed. Associated with the streaks and akin to the bypass transition, 'backward' and 'forward' jet like structures of the fluctuating velocity components are observed.

Item Type:	Journal Article
Publication:	Experiments In Fluids
Publisher:	springer
Additional Information:	Copyright of this article belongs to Springer.
Keywords:
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	06 Apr 2009 07:04
Last Modified:	19 Sep 2010 04:58
URI:	http://eprints.iisc.ac.in/id/eprint/17754

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