Localised instability in unsteady separation bubbles

Arakeri, Jaywant H and Das, SP and Srinivasan, Usha (2006) Localised instability in unsteady separation bubbles. In: 6th IUTAM Symposium on Laminar-Turbulent Transition, DEC 13-17, 2004, Bangalore, INDIA.

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Abstract

We propose in experimental method to study the instability of thin unsteady separation bubbles, i.e. of unsteady boundary layers with reverse flow. The unsteady boundary layer is created by controlled temporal and spatial variations of the velocity external to the boundary layer. We present results of the evolution of instability in different temporally varying flows in a shallow angle diffuser. Depending on the extent of reverse flow in the boundary we observe that instability can be spatially localised.

Item Type:	Conference Paper
Publisher:	Springer
Additional Information:	Copyright of this article belongs to Springer.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	13 Jul 2010 04:57
Last Modified:	19 Sep 2010 06:10
URI:	http://eprints.iisc.ac.in/id/eprint/28874

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