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Particle image velocimetry study of a cloud-like flow

Venkatakrishnan, L and Elavarasan, R and Bhat, GS and Krothapalli, A and Lourenco, L (2003) Particle image velocimetry study of a cloud-like flow. In: Current Science, 85 (6). pp. 778-785.

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This study employs particle image velocimetry (PIV) on a jet with and without subjection to internal heating. The effects of buoyancy enhancement on the entrainment coefficient and on the streamline structures responsible for it are investigated. PIV results for the unheated jet are in good agreement with earlier studies. It is shown that when internal heating is present in the flow, the mean entrainment coefficient decreases from a value of 0.057 characterizing a standard jet to 0.017, at a heating rate of 1400 W corresponding to a Richardson number of 0.24. It is also shown that the mingling of the. entrained fluid with the main flow is different in heated and unheated jets.

Item Type: Journal Article
Publication: Current Science
Publisher: Current Science Association
Additional Information: Copyright of this article belongs to Current Science Association
Department/Centre: Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences
Date Deposited: 24 Nov 2009 09:43
Last Modified: 19 Sep 2010 04:56
URI: http://eprints.iisc.ac.in/id/eprint/17246

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