Streamwise and spanwise plasma actuators for flow-induced cavity noise control


Huang, Xun and Zhang, Xin (2008) Streamwise and spanwise plasma actuators for flow-induced cavity noise control Physics of Fluids, 20, (3), 037101-[10pp]. (doi:10.1063/1.2890448).

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Description/Abstract

Plasma actuators operating in atmospheric air can induce a body force through collisions between electrically charged particles and neutral air molecules by an externally applied electric field. The fast response and the simple structure make the plasma actuator a promising option in aerospace applications. In this work, experiments were performed with several alternative current excited plasma (streamwise and spanwise) actuators to control flow-induced noise from a cavity. It was found that the streamwise actuator induced three-dimensional variations in the shear layer. The spanwise actuator, however, has little influence on the global flow field. As a result, the streamwise actuator is more effective than the spanwise actuator in cavity noise attenuation.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1063/1.2890448
ISSNs: 1070-6631 (print)
Subjects:
Organisations: Aerodynamics & Flight Mechanics
ePrint ID: 50718
Date :
Date Event
12 March 2008Published
Date Deposited: 17 Mar 2008
Last Modified: 16 Apr 2017 18:08
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/50718

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