Visualization of supersonic ethylene jet flames in a hot coflow by OH-PLIF

Xiaobo Tu, Bing Liu, Linsen Wang, Xinhua Qi, Bo Yan, Jinhe Mu, Shuang Chen, Fei Qin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

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.

Original languageEnglish
Title of host publicationFifth International Symposium on Laser Interaction with Matter
EditorsYijun Zhao
PublisherSPIE
ISBN (Electronic)9781510627581
DOIs
StatePublished - 2019
Event5th International Symposium on Laser Interaction with Matter, LIMIS 2018 - Changsha, China
Duration: 11 Nov 201813 Nov 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11046
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference5th International Symposium on Laser Interaction with Matter, LIMIS 2018
Country/TerritoryChina
CityChangsha
Period11/11/1813/11/18

Keywords

  • Ethylene
  • Hot coflow
  • Jet flame
  • OH
  • Planar laser-induced fluorescence (PLIF)

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