Thermal fluctuation characteristics around a nanosecond pulsed dielectric barrier discharge plasma actuator using a frequency analysis based on Schlieren images

Ukai, T. and Kontis, K. (2020) Thermal fluctuation characteristics around a nanosecond pulsed dielectric barrier discharge plasma actuator using a frequency analysis based on Schlieren images. Energies, 13(3), 628. (doi: 10.3390/en13030628)

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Abstract

A thermal fluctuation driven by a burst plasma discharge is experimentally investigated using a frequency analysis based on the Schlieren images. The burst plasma discharge is controlled by an interval frequency fint = 200 Hz and a pulse frequency fB = 3.6 kHz as well as the duration time of the burst event: Ton. A burst feature is defined as a burst ratio BR = Ton/(1/fint). The burst plasma discharge generates a burst-induced hot plume growing above a ground electrode. In a high burst ratio, which is BR = 0.45 and 0.57, the burst-induced hot plume is formed as a wave thermal pattern that is mainly fluctuated at the interval frequency of 200 Hz. Additionally, a maximum fluctuation spot of 200 Hz appears near the edge of an exposed electrode in a low burst ratio, whereas it moves towards the ground electrode in the high burst ratio. The possible scenario is that a relatively strong ionic wind and/or an induced jet generated in the high burst ratio might cause the movement of the maximum fluctuation spot.

Item Type:Articles
Additional Information:This research was funded by the European Commission, H2020-MSCA-IF, grant number 654318.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Ukai, Dr Takahiro and Kontis, Professor Konstantinos
Creator Roles:
Ukai, T.Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Resources, Software, Validation, Visualization, Writing – original draft, Writing – review and editing
Kontis, K.Funding acquisition, Project administration, Resources, Supervision, Writing – review and editing
Authors: Ukai, T., and Kontis, K.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Journal Name:Energies
Publisher:MDPI
ISSN:1996-1073
ISSN (Online):1996-1073
Copyright Holders:Copyright © 2020 by the authors
First Published:First published in Energies 13(3):628
Publisher Policy:Reproduced under a Creative Commons license

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