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

Giuni, Michea and Green, Richard B. and Benard, Emmanuel Investigation of a trailing vortex near field by stereoscopic particle image velocimetry. (2011) In: 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 04 - 07 Jan 2011, Orlando, USA .

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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 evaluation of velocity profiles and turbulence quantities. The number of samples needed for the statistical onvergence of the mean flow 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 or Workshop Item (Paper)
Additional Information:http://www.proceedings.com/11825.html
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Other partners > University of Glasgow (UNITED KINGDOM)
Laboratory name:
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Deposited By: Emmanuel Benard

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