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TECHNICAL PAPERS

A New Class of Synthetic Jet Actuators—Part I: Design, Fabrication and Bench Top Characterization

[+] Author and Article Information
J. L. Gilarranz, L. W. Traub, O. K. Rediniotis

Department of Aerospace Engineering, Texas A&M University, College Station, Texas 77843-3141

J. Fluids Eng 127(2), 367-376 (May 10, 2005) (10 pages) doi:10.1115/1.1839931 History: Received August 12, 2003; Revised February 25, 2004; Online May 10, 2005
Copyright © 2005 by ASME
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References

Amitay, M., Smith, B. L., and Glezer, A., 1998, “Aerodynamic Flow Control Using Synthetic Jet Technology,” AIAA Paper No. 98-0208.
Smith, D., Amitay, M., Kibens, V., Parekh, D., and Glezer, A., 1998, “Modifications of Lifting Body Aerodynamics Using Synthetic Jet Actuators,” AIAA Paper No. 98-0209.
Seifert,  A., Bachat,  T., Koss,  D., Shepshelovich,  M., and Wygnanski,  I., 1993, “Oscillatory Blowing: A Tool to Delay Boundary-Layer Separation,” AIAA J., 31, No. 11, pp. 2052–2060.
Seifert, A., and Pack, L., 1998, “Oscillatory Excitation of Separation at High Reynolds Number,” AIAA Paper No. 98-0214.
Seifert, A., and Pack, L., 1999, “Oscillatory Excitation of Unsteady Compressible Flows Over Airfoils at Flight Reynolds Number,” AIAA Paper No. 99-0925.
Greenblatt, D., and Wygnanski, I., 1998, “Dynamic Stall Control by Oscillatory Forcing,” AIAA Paper No. 98-0676.
Greenblatt, D., Darabi, A., Nishri, B., and Wygnanski, I., 1998, “Separation Control by Periodic Addition of Momentum With Particular Emphasis on Dynamic Stall,” Proceedings Heli Japan 98, Paper T3-4, American Helicopter Society.
Honohan, A. M., Amitay, M., and Glezer, A., 2000, “Aerodynamic Control Using Synthetic Jets,” AIAA Paper No. 2000-2401.
Parekh, D. E., and Glezer, A., 2000, “AVIA: Adaptive Virtual Aerosurface,” AIAA Paper No. 2000-2474.
Smith, B. L., and Glezer, A., 1997, “Vectoring and Small-Scale Motions Effected in Free Shear Flows Using Synthetic Jet Actuators,” AIAA Paper No. 97-0213.
Smith, B. L., Trautman, M. A., and Glezer, A., 1999, “Controlled Interactions of Adjacent Synthetic Jets,” AIAA Paper No. 99-0669.
Pack, L., and Seifert, A., 1999, “Periodic Excitation for Jet Vectoring and Enhanced Spreading,” AIAA Paper No. 99-0672.
Rathnasingham,  R., and Breuer,  K., 1997, “Coupled Fluid-Structural Characteristics of Actuators for Flow Control,” AIAA J., 35, pp. 832–837.
Seifert,  A., Eliahu,  S., Greenblatt,  D., and Wygnanski,  I., 1998, “On the Use of Piezoelectric Actuators for Airfoil Separation Control,” AIAA J., 36, pp. 1535–1537.
McCormick, D., 2000, “Boundary Layer Separation Control With Directed Synthetic Jets,” AIAA Paper No. 2000-0519.
Rizzetta,  D., Visbal,  M., and Stanek,  M., 1999, “Numerical Investigations of Synthetic-Jet Flow Fields,” AIAA J., 37, pp. 919–927.
Rao, P., Gilarranz, J. L., Ko, J., Strganac, T., and Rediniotis, O. K., 2000, “Flow Separation Control Via Synthetic Jet Actuation,” AIAA Paper 2000-0407.
Müller, M., Bernal, L., Moran, R., Washabaugh, P., Parviz, B., and Najafi, K., 2000, “Micromachined Acoustic Resonators for Microjet Propulsion,” AIAA Paper 2000-0547.
Amitay, M., Honohan, A., Trautman, M., and Glezer, A., 1997, “Modification of the Aerodynamic Characteristics of Bluff Bodies Using Fluidic Actuators,” AIAA Paper No. 97-2004.
Seifert,  A., Darabi,  A., and Wygnanski,  I., 1996, “Delay of Airfoil Stall by Periodic Excitation,” AIAA J., 33, No. 4.
Gilarranz, J. L., 2001, “Development of High-Power, Compact Synthetic Jet Actuators for Flow Separation Control,” Ph.D. Dissertation, Texas A&M University, Texas.
Gilarranz, J. L., Traub, L. W., and Rediniotis, O. K., 2002, “Characterization of a Compact, High-Power Synthetic Jet Actuator for Flow Separation Control,” AIAA Paper No. 2002-0127.
Johansen, E. S., 2002, “Development of a Fast-Response Multi-Hole Probe for Unsteady and Turbulent Flowfields,” Ph.D. Dissertation, Texas A&M University, College Station, Texas.

Figures

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Principle of SJA driving mechanism
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Two views of the single piston SJA
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Theoretical and measured maximum velocity at the exit slot for two slot widths: (a) Slot width=0.80 mm and (b) slot width=1.60 mm
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Variation of measured maximum velocity over the length of the exit slot
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Schematic of multi-piston SJA
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Plenum cross section showing exit slot geometry: (a) Fixed slot geometry and (b) variable slot geometry
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Dependence of Cμ on frequency and slot width for U=50 m/s, incompressible assumption
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Pictures of multipiston actuator, showing motor mounting, cylinder phasing and exit slot geometry
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Fast-response stagnation probe
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Frequency response of fast-response stagnation probe
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Schematic of plenum separation walls
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Maximum exit velocity as a function of actuator frequency: (a) Comparison of hot-wire measurements and predictions using the continuity equation for incompressible flow, for all six pistons. (b) Comparison of hot-wire and fast-response stagnation probe measurements for piston #1.
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Effects of the extended plenum separation walls on the spanwise distribution of the maximum jet exit velocity, for an actuator frequency of 120 Hz
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Effect of SJA frequency and slot width on normalized SJA exit velocity
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Effect of compressibility on the jet exit parameter K
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Effect of frequency and slot width on SJA exit velocity: (a) Velocity dependence on frequency, slot width=1.2 mm, (b) maximum SJA exit velocity as a function of slot width

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