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Lookup NU author(s): Dr Richard Whalley
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2019 The Authors. Plasma Processes and Polymers published by Wiley-VCH Verlag GmbH & Co. KGaAParticle image velocimetry, laser-induced fluorescence, and computational modeling are used to quantify the impact of plasma generation on air entrainment into a helium plasma jet. It is demonstrated that discharge generation yields a minor increase in the exit velocity of the gas. In contrast, the laminar to turbulent transition point is strongly affected, attributed to an increase in plasma-induced perturbations within the jet shear layer. The temporal decay of laser-induced fluorescence from OH is used as an indicator of humid air within the plasma. The results show that plasma-induced perturbations increase the quenching rate of the OH-fluorescent state; indicating that shear-layer instabilities play a major role in determining the physicochemical characteristics of the plasma.
Author(s): Morabit Y, Whalley RD, Robert E, Hasan MI, Walsh JL
Publication type: Article
Publication status: Published
Journal: Plasma Processes and Polymers
Print publication date: 01/06/2020
Online publication date: 20/12/2019
Acceptance date: 08/12/2019
Date deposited: 07/01/2020
ISSN (print): 1612-8850
ISSN (electronic): 1612-8869
Publisher: Wiley-VCH Verlag
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