![Sample our Mathematics & Statistics journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/5943/TOC-Subject-Sample-2021-Mathematics-Statistics.jpg"})
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 [Citation1,Citation2] 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.
Acknowledgements
The research reported here was undertaken as part of the AEROMEMS II project (Advanced Aerodynamic Flow Control Using MEMS, Contract No G4RD-CT-2002-00748). The AEROMEMS II project was a collaboration between BAE SYSTEMS, Dassault, Airbus Deutschland GmbH, EADS-Military, Snecma, ONERA, DLR, LPMO, Manchester University, LML, Warwick University, TUB, Cranfield University, NTUA, and Auxitrol. The project was funded by the European Union and the project partners. Part of the work was also performed in the frame of CISIT.
