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Proceedings Paper

Design of a piezoceramic-driven synthetic-jet actuator for aerodynamic performance improvement
Author(s): Razvan Rusovici; Casey Offord; Ryan Honour; Fumitaka Goto; Pierce Louderback; Charley Phelps
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Paper Abstract

The interest in synthetic-jet actuators is elicited by their employment in fluid-control applications, including boundary-layer control, combustion control etc. These actuators are zero net-mass-flux devices, and generally consist of a diaphragm mounted to enclose a volume of fluid in a cavity. The diaphragm bends sinusoidally, and fluid is periodically absorbed into and ejected from the cavity through an orifice. The outflow entrains the fluid around it and establishes a mean jet flow at some distance from the source. Piezoceramic materials have been employed to drive the actuator diaphragm, especially when actuation frequencies are in excess of a few hundreds of hertz. The piezoceramic is glued directly to a silicon diaphragm. In combustion systems, improved turbulent mixing of air and fuel proper can significantly improve efficiency and reduce pollution. In boundary-layer separation control applications, synthetic-jets are used to improve aerodynamic performance by delaying separation and stall over the airfoil. The current work describes the modeling and design process of a piezoceramic-driven synthetic-jet actuator intended, amongst other applications, to improve the aerodynamic characteristics of a specific airfoil. A separate study consisting of numerical analyses performed with the aid of computational fluid dynamics (CFD) have been run to define the necessary performance parameters for the synthetic-jet actuator. The synthetic-jet actuator design task was achieved by running fluid-structure numerical analyses for various design parameters.

Paper Details

Date Published: 1 April 2008
PDF: 12 pages
Proc. SPIE 6930, Industrial and Commercial Applications of Smart Structures Technologies 2008, 69300K (1 April 2008); doi: 10.1117/12.775564
Show Author Affiliations
Razvan Rusovici, Florida Institute of Technology (United States)
Casey Offord, The Boeing Co. (United States)
Ryan Honour, Florida Institute of Technology (United States)
Fumitaka Goto, Florida Institute of Technology (United States)
Pierce Louderback, Florida Institute of Technology (United States)
Charley Phelps, Florida Institute of Technology (United States)


Published in SPIE Proceedings Vol. 6930:
Industrial and Commercial Applications of Smart Structures Technologies 2008
L. Porter Davis; Benjamin Kyle Henderson; M. Brett McMickell, Editor(s)

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