Comparison of the influence of different air-jet vortex generators on the separation region

Control of shock wave and boundary layer interaction continues to attract a lot of attention. In recent decades several methods of interaction control have been investigated in particular. The research has mostly concerned solid (vane type) vortex generators and transpiration methods of suction and blowing. In our investigations it is proposed to use air jets to generate streamwise vortices (AJVG) for interaction control. The effectiveness of air-jet vortex generators in controlling separation has been proved in our previous research. The present paper focuses on the influence of AJVGs of various parameters on the separation region. The results presented here concern experimental investigations and provide new guidelines for the design of AJVGs to obtain more effective separation control. (C) 2010 Elsevier Masson SAS. All rights reserved.