Collaborative studies on flow separation control

Wei Long Siauw*, Jean Paul Bonnet, Jean Tensi, Avi Seifert, Oxana Stalnov, Vikas Kumar, Farrukh Alvi, Callum Hugh Atkinson, Stephen Trevor, Luis Daniel Gomes

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


This paper presents the wind tunnel test results concerning the effects of deploying steady and synthetic jets on a NACA0015 airfoil and describes the design of a multi-orifice-single-chamber synthetic jet actuator. Three steady jets with different configurations were tested. The orifice diameter, orientation and spacing were the varying parameters. Synthetic jets were deployed through a single row of orifices that were orientated normal to the airfoil surface. A single row of each type was positioned at 30% of chord from the leading edge. These jets exhibited varying degree of control authority over the lift and drag coefficients. The timescales of attachment and separation were estimated for the test cases of angled steady and synthetic jets. In view of controlling the flow separation in a dynamic manner, a multi-orifice-single- chamber actuator with a typical response time smaller than that of the afore-mentioned time scales was designed, fabricated and tested in quiescent condition.

Original languageEnglish
Title of host publicationIUTAM Symposium on Flow Control and MEMS - Proceedings of the IUTAM Symposium
Number of pages10
StatePublished - 2008
EventIUTAM Symposium on Flow Control and MEMS - London, United Kingdom
Duration: 19 Sep 200622 Sep 2006

Publication series

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


ConferenceIUTAM Symposium on Flow Control and MEMS
Country/TerritoryUnited Kingdom


  • Airfoil
  • Angled jet
  • Characteristic time
  • Multi-orifice
  • Normal jet
  • Piezo-device
  • Pneumatic device
  • Synthetic jet
  • Turbulent separation control


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