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Transient growth instability cancelation by a plasma actuator array

Transient growth instability cancelation by a plasma actuator array
Transient growth instability cancelation by a plasma actuator array
This study investigates an actuation scheme that can be integrated as part of a feedback control system in the laboratory for the purpose of negating the transient growth instability in a Blasius boundary layer and delaying transition. The actuators investigated here consist of a spanwise array of symmetric plasma actuators, which are capable of generating spanwise-periodic counter-rotating vortices. Three different actuator geometries are investigated, resulting in 45, 67 and 70% reduction of the total disturbance energy produced inside the boundary layer by an array of roughness elements. It is demonstrated that the control effectiveness of the actuators can be significantly improved by optimizing the geometry of the array.
0723-4864
1339-1348
Hanson, Ronald E.
32c4b840-4052-4c62-b87c-d3721c2896d4
Lavoie, Philippe
04aaae82-b9ba-420a-a1c0-3df4f08b3306
Naguib, Ahmed M.
316ea0c6-1acf-4cf6-93b5-d74782a134d5
Morrison, Jonathan F.
7fcc8b7e-397e-4891-97cd-ab5406f8d01e
Hanson, Ronald E.
32c4b840-4052-4c62-b87c-d3721c2896d4
Lavoie, Philippe
04aaae82-b9ba-420a-a1c0-3df4f08b3306
Naguib, Ahmed M.
316ea0c6-1acf-4cf6-93b5-d74782a134d5
Morrison, Jonathan F.
7fcc8b7e-397e-4891-97cd-ab5406f8d01e

Hanson, Ronald E., Lavoie, Philippe, Naguib, Ahmed M. and Morrison, Jonathan F. (2010) Transient growth instability cancelation by a plasma actuator array. Experiments in Fluids, 49 (6), 1339-1348. (doi:10.1007/s00348-010-0877-1).

Record type: Article

Abstract

This study investigates an actuation scheme that can be integrated as part of a feedback control system in the laboratory for the purpose of negating the transient growth instability in a Blasius boundary layer and delaying transition. The actuators investigated here consist of a spanwise array of symmetric plasma actuators, which are capable of generating spanwise-periodic counter-rotating vortices. Three different actuator geometries are investigated, resulting in 45, 67 and 70% reduction of the total disturbance energy produced inside the boundary layer by an array of roughness elements. It is demonstrated that the control effectiveness of the actuators can be significantly improved by optimizing the geometry of the array.

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More information

Published date: 2010
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 356927
URI: http://eprints.soton.ac.uk/id/eprint/356927
ISSN: 0723-4864
PURE UUID: a90b8659-31dc-4c04-a715-03ef1d591e8b

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Date deposited: 23 Sep 2013 12:24
Last modified: 14 Mar 2024 14:53

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Contributors

Author: Ronald E. Hanson
Author: Philippe Lavoie
Author: Ahmed M. Naguib
Author: Jonathan F. Morrison

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