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The flow structure behind vortex generators embedded in a decelerating turbulent boundary layer

Cathalifaud, Patricia and Godard, Gilles and Braud, Caroline and Stanislas, Michel The flow structure behind vortex generators embedded in a decelerating turbulent boundary layer. (2009) Journal of Turbulence, vol. 10 (n° 42). pp. 1-37. ISSN 1468-5248

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Official URL: http://dx.doi.org/10.1080/14685240903273881

Abstract

The objective of the present work is to analyse the behaviour of a turbulent decelerating boundary layer under the effect of both passive and active jets vortex generators (VGs). The stereo PIV database of Godard and Stanislas [1, 2] obtained in an adverse pressure gradient boundary layer is used for this study. After presenting the effect on the mean velocity field and the turbulent kinetic energy, the line of analysis is extended with two points spatial correlations and vortex detection in instantaneous velocity fields. It is shown that the actuators concentrate the boundary layer turbulence in the region of upward motion of the flow, and segregate the near-wall streamwise vortices of the boundary layer based on their vorticity sign.

Item Type:Article
Additional Information:This is an Author's Accepted Manuscript of an article published in Journal of Turbulence, vol. 10 (n° 42). pp. 1-37. ISSN 1468-5248, (2009). Copyright 2009 Taylor & Francis, available online at: http://dx.doi.org/10.1080/14685240903273881
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Arts et Métiers ParisTech (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Institut National des Sciences Appliquées de Rouen - INSA (FRANCE)
Other partners > Université de Rouen - UR (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université des Sciences et Technologies de Lille - USTL (FRANCE)
Other partners > Ecole Centrale de Lille (FRANCE)
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Deposited By: Patricia CATHALIFAUD
Deposited On:30 Oct 2012 11:47

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