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Development of DBD plasma actuators: the double encapsulated electrode

Development of DBD plasma actuators: the double encapsulated electrode
Development of DBD plasma actuators: the double encapsulated electrode
Plasma actuators are electrical devices that generate a wall bounded jet without the use of any moving parts. For aerodynamic applications they can be used as flow control devices to delay separation and augment lift on a wing. The standard plasma actuator consists of a single encapsulated (ground) electrode. The aim of this project is to investigate the effect of varying the number and distribution of encapsulated electrodes in the dielectric layer. Utilising a transformer cascade, a variety of input voltages are studied for their effect. In the quiescent environment of a Faraday cage the velocity flow field is recorded using particle image velocimetry. Through understanding of the mechanisms involved in producing the wall jet and the importance of the encapsulated electrode a novel actuator design is proposed. The actuator design distributes the encapsulated electrode throughout the dielectric layer. The experiments have shown that actuators with a shallow initial encapsulated electrode induce velocities greater than the baseline case at the same voltage. Actuators with a deep initial encapsulated electrode are able to induce the highest velocities as they can operate at higher voltages without breakdown of the dielectric.
0094-5765
132-143
Erfani, Rasool
90d5e127-23a1-4a50-adfc-73bb634eb220
Zare-Behtash, Hossein
74be9b97-cb09-49c6-9f75-7ec58c0dd16c
Hale, Craig
04d6fd7a-bcc7-4636-bbd5-44c5303f5908
Kontis, Konstantinos
8e534eab-6495-4dcb-ab48-e2a8906bcd8a
Erfani, Rasool
90d5e127-23a1-4a50-adfc-73bb634eb220
Zare-Behtash, Hossein
74be9b97-cb09-49c6-9f75-7ec58c0dd16c
Hale, Craig
04d6fd7a-bcc7-4636-bbd5-44c5303f5908
Kontis, Konstantinos
8e534eab-6495-4dcb-ab48-e2a8906bcd8a

Erfani, Rasool, Zare-Behtash, Hossein, Hale, Craig and Kontis, Konstantinos (2015) Development of DBD plasma actuators: the double encapsulated electrode. Acta Astronautica, 109, 132-143. (doi:10.1016/j.actaastro.2014.12.016).

Record type: Article

Abstract

Plasma actuators are electrical devices that generate a wall bounded jet without the use of any moving parts. For aerodynamic applications they can be used as flow control devices to delay separation and augment lift on a wing. The standard plasma actuator consists of a single encapsulated (ground) electrode. The aim of this project is to investigate the effect of varying the number and distribution of encapsulated electrodes in the dielectric layer. Utilising a transformer cascade, a variety of input voltages are studied for their effect. In the quiescent environment of a Faraday cage the velocity flow field is recorded using particle image velocimetry. Through understanding of the mechanisms involved in producing the wall jet and the importance of the encapsulated electrode a novel actuator design is proposed. The actuator design distributes the encapsulated electrode throughout the dielectric layer. The experiments have shown that actuators with a shallow initial encapsulated electrode induce velocities greater than the baseline case at the same voltage. Actuators with a deep initial encapsulated electrode are able to induce the highest velocities as they can operate at higher voltages without breakdown of the dielectric.

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Accepted/In Press date: 30 December 2014
e-pub ahead of print date: 19 January 2015
Published date: 2015

Identifiers

Local EPrints ID: 490893
URI: http://eprints.soton.ac.uk/id/eprint/490893
ISSN: 0094-5765
PURE UUID: 824788af-5f1b-4670-af06-92527c2366f8
ORCID for Hossein Zare-Behtash: ORCID iD orcid.org/0000-0002-4769-4076

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Date deposited: 07 Jun 2024 17:43
Last modified: 12 Jul 2024 02:17

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Contributors

Author: Rasool Erfani
Author: Hossein Zare-Behtash ORCID iD
Author: Craig Hale
Author: Konstantinos Kontis

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