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Laser anemometer measurements of trailing vortices in water

Baker, G. R. and Barker, S. J. and Bofah, K. K. and Saffman, P. G. (1974) Laser anemometer measurements of trailing vortices in water. Journal of Fluid Mechanics, 65 (2). pp. 325-336. ISSN 0022-1120. doi:10.1017/S0022112074001418.

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A series of measurements of trailing vortices behind lifting hydrofoils is described. These measurements were made in the Caltech Free-Surface Water Tunnel, using a laser-Doppler velocimeter to measure two components of velocity in the vortex wake. Two different model planforms were tested, and measurements were made at several free-stream velocities and angles of attack for each. Velocity profiles were measured at distances downstream of the model of from five to sixty chord lengths. These measurements are the first results of a continuing experimental programme. In § 3 of this paper, the theory of trailing vortices is discussed. The effects of ‘vortex wandering’ upon the measurements are computed, and the corrected results are seen to be in reasonable agreement with the theory.

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Additional Information:© 1974 Cambridge University Press. Received 10 October 1973. The authors are indebted to the U.S. Air Force Office of Scientific Research for their support of this work.
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Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20120719-091307865
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32576
Deposited By: Tony Diaz
Deposited On:19 Jul 2012 19:23
Last Modified:09 Nov 2021 21:28

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