Investigation of a trailing vortex near field by stereoscopic particle image velocimetry

Giuni, M., Green, R.B. and Benard, E. (2011) Investigation of a trailing vortex near field by stereoscopic particle image velocimetry. In: 49th AIAA Aerospace Sciences Meeting, Orlando FL, USA, 4-7 Jan 2011, (doi:10.2514/6.2011-992)

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Publisher's URL: http://dx.doi.org/10.2514/6.2011-992

Abstract

High spatial resolution experiments in the near field of a trailing vortex using a SPIV technique have been carried out. A particular attention on the measurement technique is presented highlighting the importance of the laser pulses delay between the two frames in a double-frame/single-pulse method and of the images processing characteristics in the eval- uation of velocity profiles and turbulence quantities. The number of samples needed for the statistical convergence of the mean ow and the turbulent quantities has also been found. A study on the vortex aperiodicity correction method has revealed how the instantaneous vector fields centering affects the velocity profiles across the vortex. The importance in the choice of the vortex quantity which is used for the vortex centre detection is presented.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Green, Dr Richard and Benard, Dr Emmanuel and Giuni, Dr Michea
Authors: Giuni, M., Green, R.B., and Benard, E.
Subjects:Q Science > Q Science (General)
Q Science > QC Physics
College/School:College of Science and Engineering > School of Engineering
College of Science and Engineering > School of Engineering > Aerospace Sciences
Copyright Holders:Copyright © 2011 The Authors
Publisher Policy:Reproduced with the permission of the Authors

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