Skip to main content

Research Repository

Advanced Search

Towards the noise reduction of piezoelectrical-driven synthetic jet actuators

Jabbal, Mark; Jeyalingam, Jonne

Authors

Jonne Jeyalingam



Abstract

This work details an experimental investigation aimed at reducing the noise output of piezoelectrical-driven synthetic jet actuators while minimising peak jet velocity reduction. The study considers double-chamber actuator for anti-phase noise suppression and lobed orifice as a method to enhance jet turbulent mixing to suppress jet noise. The study involved the design, manufacture and bench test of interchangeable actuator hardware. Hot-wire anemometry and microphone recordings were employed to acquire velocity and sound pressure level measurements respectively across a range of excitation frequencies for a fixed diaphragm clamping and input voltage. The data analysis indicated a 26% noise reduction (16 dB) from operating a single-chamber, round orifice actuator to a double-chamber, lobed orifice one at the synthetic jet resonant frequency. Results also showed there was a small reduction in peak jet velocity of 7% (∼3 m/s) between these two cases based on orifices of the same discharge area. The electrical-to-fluidic power conversion efficiency of the double-chamber actuator was found to be 15% for both orifice types at the resonant frequency; approximately double the efficiency of a single-chamber actuator.

Citation

Jabbal, M., & Jeyalingam, J. (2017). Towards the noise reduction of piezoelectrical-driven synthetic jet actuators. Sensors and Actuators A: Physical, 266, https://doi.org/10.1016/j.sna.2017.09.036

Journal Article Type Article
Acceptance Date Sep 20, 2017
Online Publication Date Sep 22, 2017
Publication Date Oct 15, 2017
Deposit Date Sep 29, 2017
Publicly Available Date Sep 23, 2018
Journal Sensors and Actuators A: Physical
Print ISSN 0924-4247
Electronic ISSN 0924-4247
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 266
DOI https://doi.org/10.1016/j.sna.2017.09.036
Keywords Synthetic jet actuator; Noise reduction; Dipole; Lobed orifice
Public URL http://eprints.nottingham.ac.uk/id/eprint/46743
Publisher URL http://www.sciencedirect.com/science/article/pii/S0924424717301929
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

Files


Manuscript.pdf (912 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





You might also like



Downloadable Citations