Suction and Oscillatory Blowing Actuator

  • Gilad Arwatz
  • Ilan Fono
  • Avi Seifert
Part of the IUTAM Bookseries book series (IUTAMBOOK, volume 7)


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.

Key words

Actuator flow control ejector bi-stable switching valve 


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  1. 1.
    Seifert, A., Greenblatt, D. and Wygnanski, I., Active separation control: An overview of Reynolds and Mach numbers effects, Aerospace Science and Technology 8, 2004, 569–582.CrossRefGoogle Scholar
  2. 2.
    Seifert, A. and Pack, L.G., Effects of compressibility and excitation slot location on active separation control at high Reynolds numbers, J. Aircraft 40(1), Jan./Feb. 2003, 110–119.CrossRefGoogle Scholar
  3. 3.
    Seifert, A., Eliahu, S., Greenblatt, D. and Wygnanski, I., Use of piezoelectric actuators for airfoil separation control (TN), AIAA Journal 36(8), 1998, 1535–1537.CrossRefGoogle Scholar
  4. 4.
    Amitay, M., Smith, D.R., Kibens, V., Parekh, D.E. and Glezer, A., Aerodynamic flow control over an unconventional airfoil using synthetic jet actuators, AIAA Journal 39(3), 2001, 361–370.CrossRefGoogle Scholar
  5. 5.
    Margalit, S., Greenblatt, D., Seifert, A. and Wygnanski, I., Delta wing stall and roll control using segmented piezoelectric fluidic actuators, AIAA J. Aircraft, May/June 2004 (previously AIAA Paper 2002-3270).Google Scholar
  6. 6.
    Ouzzane, M. and Adieus, Z.,Model development and numerical procedure for detailed ejector analysis and design, Applied Thermal Engineering 23(18), 2003, 2337–2351.CrossRefGoogle Scholar
  7. 7.
    Da-Wen, S. and Eames, I.W., Recent development in the design theories and applications of ejector — A review, Journal of the Institute of Energy 68, 1995, 65–79.Google Scholar
  8. 8.
    Kirshner, J.M., Fluid Amplifiers, McGraw-Hill Book Company, 1966.Google Scholar
  9. 9.
    Viets, H., Flip flop jet nozzle, AIAA Journal 13, 1975, 1375–1379.CrossRefGoogle Scholar
  10. 10.
    Raman, G., Rice, E.J. and Cornelius, D., Evaluation of flip-flop jet nozzles for use as practical excitation devices, ASME Journal of Fluids Engineering 116, 1994, 508–515.CrossRefGoogle Scholar
  11. 11.
    Arwatz, G., Development and modeling of suction and oscillatory blowing actuator for flow control applications, Master Thesis, Tel-Aviv university, Israel, August 2006.Google Scholar
  12. 12.
    Kirshner, J.M. and Katz, S., Design Theory of Fluidic Components, Academic Press, New York, 1975.Google Scholar
  13. 13.
    Simoes, E.W., Furlan, R. and Pereira, M.T., Numerical analysis of a microfluidic oscillator flowmeter operating with gases or liquids, in Technical Proceedings of the Fifth International Conference on Modeling and Simulation of Microsystems, MSM 2002, San Juan, Puerto Rico.Google Scholar
  14. 14.
    Tippetts, J.R., Ng, H.K. and Royle, J.K., An oscillating bi-stable fluid amplifier for use as a flowmeter, Fluidics Quarterly 5(1), 1973.Google Scholar
  15. 15.
    Fox, J.A., Transients Flow in Pipes, Open Channels and Sewers, Ellis Horwood Limited, 1989.Google Scholar
  16. 16.
    Streeter, V.L. and Wylie, E.B., Fluid Mechanics, First SI Metric Edition, McGraw Hill Ryerson, 1981.Google Scholar
  17. 17.
    Seifert, A., Closed-loop AFC system: Actuators, in Active Flow Control 2006, Papers Contributed to the Conference “Active Flow Control 2006”, R. King (Ed.), NNFM, Vol. 95, Springer-Verlag, Berlin, 2007.CrossRefGoogle Scholar

Copyright information

© Springer 2008

Authors and Affiliations

  • Gilad Arwatz
    • 1
  • Ilan Fono
    • 1
  • Avi Seifert
    • 1
  1. 1.School of Mechanical EngineeringFaculty of Engineering Tel-Aviv UniversityTel-AvivIsrael

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