Journal of Visualization

, Volume 20, Issue 1, pp 45–51 | Cite as

Three-dimensional span effects of high-aspect ratio synthetic jet forcing for separation control on a low Reynolds number airfoil

  • Mark A. Feero
  • Philippe Lavoie
  • Pierre E. Sullivan
Regular Paper


The three-dimensional structure of the reattached flow caused by synthetic jet actuation on an airfoil was investigated using surface flow visualization. Without active control, the flow was stalled with laminar boundary layer separation occurring near the leading edge. Tuft and oil visualization showed the shape and spanwise extent of the attached flow due to a finite span synthetic jet where the effect of excitation frequency and blowing ratio was the focus. For all excitation frequencies tested, a similar contraction of the spanwise extent of the attached flow towards the trailing edge was observed due to edge effects of the finite span jet. Increasing the blowing ratio was found to decrease the amount by which the attached flow contracted.

Graphical abstract


Flow control Synthetic jet Flow separation 



The authors graciously acknowledge financial support from the Natural Sciences and Engineering Research Council of Canada.


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Copyright information

© The Visualization Society of Japan 2016

Authors and Affiliations

  • Mark A. Feero
    • 1
  • Philippe Lavoie
    • 1
  • Pierre E. Sullivan
    • 2
  1. 1.Institute for Aerospace StudiesUniversity of TorontoTorontoCanada
  2. 2.Mechanical and Industrial EngineeringUniversity of TorontoTorontoCanada

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