Forced reattachment evolution process of a lifted jet diffusion flame induced by repetitive D.C. Pulsed discharges

Tzu Wei Chang, Yei-Chin Chao, Tsarng Sheng Cheng

Research output: Contribution to conferencePaperpeer-review

Abstract

Electrically enhanced combustion by applying electric fields or plasmas has been demonstrated as a promising approach to the problem of flame instability occurred in lean combustion process. In this study, the lifted-flame forced reattachment process in a turbulent non-premixed propane jet induced by a repetitive D.C. pulsed discharges with a proposed electrode configuration have been experimentally investigated. A conditional particle image velocimetry (cond-PIV) measurement is used to analyze the detailed flame-flow interaction of complete reattachment process. The results show that the effect of pulsed discharge on flame stabilization is significant with increasing pulse repetition frequency (PRF). According to the time history of flame base height and variation of absolute flame speed with the axial location, it suggests that the corona discharge plays a key role in flame dynamic propagation process, leading to flame reattachment, as a result of the flame-edge propagation speed is augmented over 3 SL.

Original languageEnglish
Publication statusPublished - 2019 Jan 1
Event12th Asia-Pacific Conference on Combustion, ASPACC 2019 - Fukuoka, Japan
Duration: 2019 Jul 12019 Jul 5

Conference

Conference12th Asia-Pacific Conference on Combustion, ASPACC 2019
CountryJapan
CityFukuoka
Period19-07-0119-07-05

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Condensed Matter Physics

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