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Visualization of supersonic ethylene jet flames in a hot coflow by OH-PLIF
Author(s): Xiaobo Tu; Bing Liu; Linsen Wang; Xinhua Qi; Bo Yan; Jinhe Mu; Shuang Chen; Fei Qin
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Paper Abstract

Planar laser induced fluorescence (PLIF) is a powerful tool to visualize the flame structure, especially for the turbulent flame. In this paper, we employ OH-PLIF technique to analyze the structure of a supersonic ethylene jet flame on a turbulent burner. This burner consists of a central jet and hot coflow. The Mach numbers of the jet vary from 1.0 to 1.6, corresponding to Reynolds numbers ranging from 40893 to 65455. The flame structures are imaged by OH-PLIF measurement. The measurement results reveal that the OH concentrations decrease with the increase of jet velocity or decrease of the O2 fraction. And the extinction and re-ignition of flame take place when the jet velocity is high or the O2 fraction is small. These measurement results help to understand the interaction between flame and highly turbulent flow.

Paper Details

Date Published: 29 March 2019
PDF: 5 pages
Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110462K (29 March 2019); doi: 10.1117/12.2524291
Show Author Affiliations
Xiaobo Tu, China Aerodynamics Research and Development Ctr. (China)
Bing Liu, Northwestern Polytechnical Univ. (China)
Linsen Wang, China Aerodynamics Research and Development Ctr. (China)
Xinhua Qi, China Aerodynamics Research and Development Ctr. (China)
Bo Yan, China Aerodynamics Research and Development Ctr. (China)
Jinhe Mu, China Aerodynamics Research and Development Ctr. (China)
Shuang Chen, China Aerodynamics Research and Development Ctr. (China)
Fei Qin, Northwestern Polytechnical Univ. (China)


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

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