High resolution piv study of zero-net-mass-flow lift enhancement of NACA 0015 airfoil at high angles of attack

Trevor Stephens, Julio Soria

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther


The effect of changing the pitch to diameter ratio (P/D) of a row of round, wall-normal, zero-net-mass-flux (ZNMF) jets located at the leading edge of a NACA 0015 airfoil was investigated. A parametric study and particle image ve-locimetry (PIV) measurements were conducted on a two-dimensional airfoil in a water tunnel at a Reynolds number of 6.56 × 10 4. Different optimal forcing frequencies and percentage lift increases between the two P/D cases were observed. It is possible that differences in jet interaction mechanisms may have caused the differences in control effectiveness between P/D cases. Time-averaged streamlines indicate a reduction in the size of a recirculation region over the upper surface of the airfoil may be causing the improved lift.

Original languageEnglish
Title of host publicationIUTAM Symposium on Flow Control and MEMS - Proceedings of the IUTAM Symposium
Number of pages7
Publication statusPublished - 1 Dec 2008
EventIUTAM Symposium on Flow Control and MEMS 2006 - London, United Kingdom
Duration: 19 Sept 200622 Sept 2006

Publication series

NameSolid Mechanics and its Applications
ISSN (Print)1875-3507


ConferenceIUTAM Symposium on Flow Control and MEMS 2006
Country/TerritoryUnited Kingdom


  • Flow control
  • Jets
  • Lift enhancement
  • PIV
  • Separation control
  • Synthetic jet
  • Zero-net-mass flux jet

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