Streamwise and spanwise plasma actuators for flow-induced cavity
noise control
Streamwise and spanwise plasma actuators for flow-induced cavity
noise control
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.
037101-[10pp]
Huang, Xun
44c6d7c9-07ca-436c-9cbe-1ba9a2f834f9
Zhang, Xin
3056a795-80f7-4bbd-9c75-ecbc93085421
12 March 2008
Huang, Xun
44c6d7c9-07ca-436c-9cbe-1ba9a2f834f9
Zhang, Xin
3056a795-80f7-4bbd-9c75-ecbc93085421
Huang, Xun and Zhang, Xin
(2008)
Streamwise and spanwise plasma actuators for flow-induced cavity
noise control.
Physics of Fluids, 20 (3), .
(doi:10.1063/1.2890448).
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.
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Published date: 12 March 2008
Organisations:
Aerodynamics & Flight Mechanics
Identifiers
Local EPrints ID: 50718
URI: http://eprints.soton.ac.uk/id/eprint/50718
ISSN: 1070-6631
PURE UUID: 899f4d02-12fd-49d9-bf93-b62f0d77056c
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Date deposited: 17 Mar 2008
Last modified: 15 Mar 2024 10:11
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Author:
Xun Huang
Author:
Xin Zhang
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