Hostname: page-component-7dd5485656-k8lnt Total loading time: 0 Render date: 2025-10-31T20:55:25.001Z Has data issue: false hasContentIssue false
  • English
  • Français

Massive separation control analysis of the pulsed jet actuatorseffects

Published online by Cambridge University Press:  14 February 2014

P. Gillieron  and
A. Kourta
P. Gillieron*
Affiliation:
Chercheur indépendant 
A. Kourta
Affiliation:
Laboratoire PRISME, Université d’Orléans, France
*
a Corresponding author:rdmfa.pgillieron@orange.fr
Get access

Abstract

The aerodynamic drag of simplified car geometry with small span and strongly separatedwake can be reduced up 20% by using pulsed jet distributed along the rear window. Resultsshow an enhancement of transversal wake size in the control region, a displacement of themean positions of vortex wake structures, a decrease of velocities near the rear part anda reduction of vortex structure recirculation in the wake. These modifications produced bythe control are analyzed, commented and model based on simple strategy to build efficientand suitable separation control strategy is proposed.

Keywords

Aerodynamiccontrolactuatorpulsed jetmodelingAérodynamiquecontrôleactionneurjets pulsésmodélisation

Information

Type
Research Article
Information
Mechanics & Industry , Volume 14 , Issue 6 , 2013 , pp. 441 - 445
Copyright
© AFM, EDP Sciences 2014

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

P. Gilliéron, A. Kourta, Aérodynamique automobile pour l’environnement, le design et la sécurité, Editions CEPADUES, ISBN No. 978.2.85428.969.5, 2011
S. Aubrun, J. MacNally, F. Alvi, A. Kourta, Separation flow control on a generic ground vehicle using steady microjet arrays, Experiments in Fluids, DOI 10.1007/s00348-011-1132-0
Joseph, P., Amandolèse, X., Aider, J.L., Drag reduction on the 25° slant angle Ahmed reference body using pulsed jet, Experiments in Fluids 52 (2012) 1169-1185 CrossRefGoogle Scholar
Pastoor, M., Henning, L., Noack, B.R., King, R., Tadmor, G., Feedback shear layer control for bluff body drag reduction, J. Fluid Mech. 608 (2008) 161-196 CrossRefGoogle Scholar
E. Bideaux, P. Bobillier, E. Fournier, P. Gilliéron, M. El Hajem, J.Y. Champagne, P. Gilotte, A. Kourta, Aerodynamics for land vehicles; Flow control; Drag reduction with pulsed jets on thick body and massive flow separation, IJAD, 2010 Indersciences Enterprises Ltd, 2011, pp. 282-298
Gilliéron, P., Kourta, A., Aerodynamic drag control by pulsed jets on simplified car geometry, Exp. in Fluids 54 (2013) 14-57 CrossRefGoogle Scholar
S.R. Ahmed, R. Ramm, G. Flatin, Some salient features of the time averaged ground vehicle wake, SAE technical paper Series 840300, 1984
G.N. Abramovich, Teoriia turbulentnykh strui. Moscow, 1960
C.H. Bruneau, E. Creusé, D. Depeyras, P. Gilliéron, I. Mortazavi, An analytical approach to improve drag control techniques for the Ahmed body, Joint Fluids Engineering Conference, 2011