Suction and oscillatory blowing actuator

Gilad Arwatz*, Ilan Fono, Avi Seifert

*Corresponding author for this work

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


Enhancing the ability to control flows in different configurations and flow conditions can lead to improved systems. Certain active flow control (AFC) actuators are efficient at low Mach numbers but the momentum and vorticity they provide limits the utilization to low speeds. At higher Mach numbers, robust, unsteady, efficient and practical fluidic actuators are a critical, largely missing, enabling technology in any AFC system. A new actuator concept, based on the combination of steady suction and oscillatory-blowing (SaOB) is presented. The actuator can achieve near-sonic speeds at about 1 kHz. It has no moving parts and therefore is expected to have superior efficiency and reliability. The operation principle of the SaOB actuator is presented along with two predictive computational models and their experimental validation.

Original languageEnglish
Title of host publicationIUTAM Symposium on Flow Control and MEMS - Proceedings of the IUTAM Symposium
Number of pages12
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


  • Actuator
  • Bi-stable
  • Ejector
  • Flow control
  • Switching valve


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