No-moving-part hybrid-synthetic jet actuator

Tesar, V., Hung, C. and Zimmerman, W.B. (2006) No-moving-part hybrid-synthetic jet actuator. Sensors and Actuators A: Physical, 125 (2). pp. 159-169. ISSN 0924-4247

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Abstract

In contrast to usual synthetic jets, the “hybrid-synthetic jets” of non-zero timemean nozzle mass flow rate are increasingly often considered for control of flow separation and/or transition to turbulence as well as heat and mass transfer. The paper describes tests of a scaled-up laboratory model of a new actuator version, generating the hybrid-synthetic jets without any moving components. Self-excited flow oscillation is produced by aerodynamic instability in fixed-wall cavities. The return flow in the exit nozzles is generated by jet-pumping effect. Elimination of the delicate and easily damaged moving parts in the actuator simplifies its manufacture and assembly. Operating frequency is adjusted by the length of feedback loop path. Laboratory investigations concentrated on the propagation processes taking place in the loop.

Item Type:	Article
Copyright, Publisher and Additional Information:	Copyright © 2005 Elsevier B.V. This is an author produced version of a paper accepted for publication in Sensors and Actuators A: Physical. Uploaded in accordance with the publisher's self-archiving policy.
Keywords:	synthetic jets, hybrid-synthetic jets, fluidics, feedback loop, acoustic propagation
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Chemical and Process Engineering (Sheffield)
Depositing User:	Vaclav Tesar
Date Deposited:	16 Nov 2005
Last Modified:	08 Feb 2013 16:57
Published Version:	http://dx.doi.org/10.1016/j.sna.2005.06.022
Status:	Published
Publisher:	Elsevier
Refereed:	Yes
Identification Number:	10.1016/j.sna.2005.06.022
URI:	http://eprints.whiterose.ac.uk/id/eprint/774

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