NDLI: The Effect of Orifice Angle and Cavity Dimension on Rectangular Synthetic Jet Actuators

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The Effect of Orifice Angle and Cavity Dimension on Rectangular Synthetic Jet Actuators

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Kabiri, Pooya Douglas, G. Bohl Ahmadi, Goodarz
Copyright Year	2011
Abstract	In the last decade, a great deal of interest has been focused on the application of synthetic jet actuators (SJA) for active flow control. SJAs delay separation by injecting vortex pairs into the cross flow and energizing the turbulent boundary layer. The goal of this study was to investigate the effects of the orifice angle on the performance of axisymmetric SJAs. The SJAs used in this experiment were composed of a piezoelectric (PZT) membrane, cavities and orifices. SJA’s with either a straight (90°) or angled (60°) orifices were characterized using hot-wire anemometry and Particle Image Velocimetry (PIV). It was found that the structure of the jet flow changed depending on the angle of the orifice with differences in the resulting vortical structure observed. The peak jet speed was found to be higher for the straight orifice than for the angled orifice contradicting the analytic prediction based on cavity dimension.
Starting Page	767
Ending Page	774
Page Count	8
File Format	PDF
ISBN	9780791854921
DOI	10.1115/IMECE2011-65575
Volume Number	Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B
Conference Proceedings	ASME 2011 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2011-11-11
Publisher Place	Denver, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Actuators Membranes Dimensions Separation (technology) Wire Cavities Cross-flow Orifices Particulate matter Vortices Flow control Jets Delays Boundary layer turbulence
Content Type	Text
Resource Type	Article

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