Heat generation mechanisms of DBD plasma actuators

RODRIGUES, Fredrico, PASCOA, Jose and TRANCOSSI, Michele (2017). Heat generation mechanisms of DBD plasma actuators. Experimental Thermal and Fluid Science, 90, 55-65.

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Abstract

During the last twenty years DBD plasma actuators have been known by their ability for boundary layer flow control applications. However, their usefulness is not limited to this application field, they also present great utility for applications within the field of heat transfer, such as a way to improve the aerodynamic efficiency of film cooling of gas turbine blades, or de-icing and ice formation prevention. Nevertheless, there is a relative lack of information about DBD’s thermal characteristics and its heat generation mechanisms. This happens due to the extremely high electric fields in the plasma region and consequent impossibility of applying intrusive measurement techniques. Against this background, this work describes the physical mechanisms behind the generation of heat associated to the DBD plasma actuators operation. An experimental technique, based on calorimetric principles, was devised in order to quantify the heat energy generated during the plasma actuators operation. The influence of the dielectric thickness, as well as the dielectric material, were also evaluated during this work. The results were exposed and discussed with the purpose of a better understanding of the heat generation mechanisms behind the operation of DBD plasma actuators.

Item Type:	Article
Uncontrolled Keywords:	Heat generation ; Plasma actuators ; Dielectric barrier discharge ; Thermal characterization
Research Institute, Centre or Group - Does NOT include content added after October 2018:	Materials and Engineering Research Institute > Engineering Research
Identification Number:	https://doi.org/10.1016/j.expthermflusci.2017.09.005
Page Range:	55-65
Depositing User:	Michele Trancossi
Date Deposited:	27 Sep 2017 16:53
Last Modified:	18 Mar 2021 01:22
URI:	https://shura.shu.ac.uk/id/eprint/16842

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