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Study of OH radicals’ spontaneous radiation of counterflow diffusion flame under non-equilibrium plasma
Author(s): Lan Li; Yukun Zhang
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Paper Abstract

Plasma assisting technique has shown great prospect in various combustion environments. Especially in terrible combustion problems, plasma brings heat effects, chemical kinetic effects, or transport effects to influence combustion. Fundamental research of non-equilibrium plasma assisting combustion is prerequisite for its engineering application. Counterflow burner provides an ideal and favourable platform to investigate aforementioned problems. This article integrated non-equilibrium plasma discharge system and counterflow burner to investigate influence of coaxial double air gap dielectric barrier discharge on counterflow diffusion flame. OH radicals generation and radiation were observed to reveal basic chemical kinetic mechanisms of plasma. Ultraviolet intensified ICCD camera was used to record OH radicals’ spontaneous radiation in flame sheet. Radiation images show that plasma discharge would increase intensity of OH radicals’ radiation and combustion of flat flame when discharge voltage was under certain value; when discharge voltage exceeded the certain value, airflow in burner would be inevitably affected by discharge, and uniformity of OH radicals’ radiation declined, while in the central zone, flow speed increased, thermal loss decreased and combustion-assistant effects weakened.

Paper Details

Date Published: 29 March 2019
PDF: 11 pages
Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110460R (29 March 2019); doi: 10.1117/12.2522094
Show Author Affiliations
Lan Li, Space Engineering Univ. (China)
Yukun Zhang, Space Engineering Univ. (China)


Published in SPIE Proceedings Vol. 11046:
Fifth International Symposium on Laser Interaction with Matter
YiJun Zhao, Editor(s)

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