Sage Journals: Discover world-class research

Abstract

A new model is proposed to capture the interaction between the acoustic waves and the membrane vibration in synthetic jet actuators (SJA). Synthetic jet actuators are a class of actuators recently developed for active flow control. They usually contain a structure membrane as the vibrating resource, a cavity as the resonator, and an orifice for jet output. The vibrating membrane is used to create pressure fluctuations, which then propagate, bounce and resonate (under certain conditions) inside the walls of the cavity, and thus produce an oscillating jet through the orifice. The proposed modeling approach is to solve a 1-D acoustic equation with the vibrating membrane as one of the boundaries and the orifice for jet output as another. This approach results in a state-space model, which will not only help make synthetic jet actuators operate away from the structural resonance of the membrane (and thus extend the life of synthetic jet actuators), but also provide a convenient way of designing and optimizing multi-input, multi-output control systems required by many complex fluid flow systems. After validation with experiments, the model is used in an example of design optimization.

Keywords

Acoustics genetic algorithm modeling synthetic jet actuator system identification.

Get full access to this article

View all access options for this article.

References

Chen, F-J. and Beeler, G.B. , 2002, "Virtual shaping of a two-dimensional NACA 0015 airfoil using synthetic jet actuator," AIAA 2002-3273, in Proceedings of AIAA 1st Flow Control Conference, St. Louis, MO, June 24-26.

Culley, D.E. , Bright, M.M. , Prahst, P.S. , and Strazisar, A.J. , 2003, "Active flow separation control of a stator vane using surface injection in a multistage compressor experiment," ASME GT2003-38863 , in Proceedings of ASME/IGTI Turbo Expo 2003 , Atlanta, GA, June 16-19.

Gallas, Q. , Holman, R. , Nishida, T. , Carrol, B. , Sheplak, M. , and Cattafesta, L. , 2003, "Lumped element modeling of piezoelectric-driven synthetic jet actuators," AIAA Journal 41(2), 240-247.

Hersh, A.S. , Walker, B.E. , and Celano, J.W. , 2003, "Helmholtz resonator impedance model, Part 1. Nonlinear model," AIAA Journal 41(5), 795-808.

Norton, M.P. , 1989, Fundamentals of Noise and Vibration Analysis for Engineers , Cambridge University Press, Cambridge , UK.

Pack, L.G. and Joslin, R.D. , 1998, "Overview of active flow control at NASA Langley research center," in 5th Industrial and Commercial Applications of Smart Structures and Technologies, Proceedings of SPIE, San Diego, CA, 3 March 1998, vol. 3326, pp. 202-213.

Ramkumar, B. , Schoen, M.P. , and Lin, F. , 2006, "Hybrid optimization algorithm using enhanced continuous Tabu search and genetic algorithm for parameter estimation problem," IMECE2006-13374 , in Proceedings of International Mechanical Engineering Congress and Expo, Chicago, IL, 5-10 November 2006.

Rathnasingham, R. and Breuer, K. , 1997, "Coupled fluid-structural characteristics of actuators for flow control," AIAA Journal 35(5), 832-837.

Ravindran, S.S. , 1999, "Active control of flow separation over an airfoil," NASA Technical Reports, NASA/TM-199- 209838.

10.

Schaeffler, N.W. , 2003, "The interaction of a synthetic jet and a turbulent boundary layer," AIAA 2003-0643, in Proceedings of 41st Aerospace Sciences Meeting and Exhibit, Reno, NV, January 6-9.

11.

Schaeffler, N.W. , Hepner, T.E. , Jones, G.S. , and Kegerise, M.A. , 2002, "Overview of active flow control actuator development at NASA Langley research center," AIAA 2002-3159, in Proceedings of AIAA 1st Flow Control Conference, St. Louis, MO, June 24-26.

12.

Sekhri, R. , Schoen, M.P. , Lin, F. , and Williams, B. , 2005, "Experimental study of the dynamics of synthetic jet actuators with different orifice sizes," IMECE2005-79777, in Proceedings of International Mechanical Engineering Congress and Expo, Orlando, FL, November 5-9.

13.

Smith, B.L. and Glezer, A. , 1997, "Vectoring and small-scale motions effected in free shear flows using synthetic jet actuators," AIAA 97-0213, in Proceedings of AIAA 35th Aerospace Sciences Meeting and Exhibit, Reno, NV, January 6-10.

14.

Yamaleev, N.K. and Carpenter, M.H. , 2003, "A reduced-order model for efficient simulation of synthetic jet actuators," NASA Technical Reports, NASA/TM-2003-212664.

Modeling Acoustic/Structural Interaction of Synthetic Jet Actuators

Abstract

Keywords

Get full access to this article

References