Plasma actuator: influence of dielectric surface temperature

Erfani, R., Zare-Behtash, H. and Kontis, K. (2012) Plasma actuator: influence of dielectric surface temperature. Experimental Thermal and Fluid Science, 42, pp. 258-264. (doi:10.1016/j.expthermflusci.2012.04.023)

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Abstract

Plasma actuators have become the topic of interest of many researchers for the purpose of flow control. They have the advantage of manipulating the flow without the need for any moving parts, a small surface profile which does not disturb the free stream flow, and the ability to switch them on or off depending on the particular situation (active flow control). Due to these characteristics they are becoming very popular for flow control over aircraft wings. The objective of the current study is to examine the effect of the actuator surface temperature on its performance. This is an important topic to understand when dealing with real life aircraft equipped with plasma actuators. The temperature variations encountered during a flight envelope may have adverse effects in actuator performance. A peltier heater along with dry ice are used to alter the actuator temperature, while particle image velocimetry (PIV) is utilised to analyse the flow field. The results show a significant change in the induced flow field by the actuator as the surface temperature is varied. It is found that for a constant peak-to-peak voltage the maximum velocity produced by the actuator depends directly on the dielectric surface temperature. The findings suggest that by changing the actuator temperature the performance can be maintained or even altered at different environmental conditions.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Zare-Behtash, Dr Hossein
Authors: Erfani, R., Zare-Behtash, H., and Kontis, K.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Journal Name:Experimental Thermal and Fluid Science
Publisher:Elsevier
ISSN:0894-1777
ISSN (Online):1879-2286
Copyright Holders:Copyright © 2012 Elsevier
First Published:First published in Experimental Thermal and Fluid Science 42:258-264
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.

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