Experimental investigation of the aeroacoustics of synthetic jet actuators in quiescent conditions

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Jeyalingam, Jonne and Jabbal, Mark (2018) Experimental investigation of the aeroacoustics of synthetic jet actuators in quiescent conditions. Sensors and Actuators A: Physical, 280 . pp. 52-60. ISSN 0924-4247

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Official URL: https://www.sciencedirect.com/science/article/pii/S0924424717322446?via%3Dihub

Abstract

In this paper, the aeroacoustic characteristics of a circular orifice, synthetic jet actuator in quiescent conditions is investigated. Electromagnetic actuation, in the form of a shaker-driven actuator with latex diaphragm, proved to be desirable over piezoelectric actuation for this work due to the reduced diaphragm noise contribution to overall actuator self-noise, hence making it easier to identify jet-related noise. Acoustic and velocity data, collected from microphone measurements in an anechoic chamber and hotwire measurements respectively, were compared for correlation. Schlieren visualization was also used to show synthetic jet development near the orifice. Flow-induced sound in the form of an audible whistling was found to occur for a Strouhal number range of 0.24

Item Type:	Article
Keywords:	Synthetic jet actuator; Aeroacoustics; Pfeifentone; Whistling; Noise
Schools/Departments:	University of Nottingham, UK > Faculty of Engineering
Identification Number:	https://doi.org/10.1016/j.sna.2018.07.007
Depositing User:	Eprints, Support
Date Deposited:	22 Aug 2018 14:09
Last Modified:	06 Jul 2019 04:30
URI:	https://eprints.nottingham.ac.uk/id/eprint/53390

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