Control of a Separated Flow over a Smoothly Contoured Ramp Using Vortex Generators

  • Thomas Duriez
  • Jean-Luc Aider
  • Jose Eduardo Wesfreid
Part of the IUTAM Bookseries book series (IUTAMBOOK, volume 7)

Abstract

In this communication, we study experimentally the modification of a boundary layer by a line of four cylindrical vortex generators. We show how the base flow modification and, specifically, the first non-linear mode (the zeroth mode) can lead to new parameters characterizing the efficiency of the vortex generators. We finally apply the vortex generators to a smoothly contoured ramp showing a clear delay of the separation when the parameters are properly chosen.

Key words

Separated flow contoured ramp vortex generators 

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References

  1. 1.
    Angele, K.: Experimental studies of turbulent boundary layer separation and control. Ph.D. Thesis of the Royal Institut of Technology, Stockholm, Sweden (2003).Google Scholar
  2. 2.
    Aider, J.L., Beaudoin, J.F., Wesfreid J.E.: Drag Reduction of a 3D Bluff Body Using Vortex Generators. In Proceedings of 4th Conference on Bluff Body Wakes and Vortex Induced Vibrations, June 21–24, Santorini, Greece (2005).Google Scholar

Copyright information

© Springer 2008

Authors and Affiliations

  • Thomas Duriez
    • 1
  • Jean-Luc Aider
    • 1
  • Jose Eduardo Wesfreid
    • 1
  1. 1.Laboratoire PMMH UMR CNRS 7636ESPCIParis Cedex 05France

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