Non-thermal ignition enhancement by magnetically stabilized gliding arc plasma discharge

T. Ombrello, Yiguang Ju, S. Gangoli, A. Gutsol, A. Fridman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Non-equilibrium plasma assisted ignition was studied through the development of a well defined system to elucidate non-thermal enhancement pathways. A counterflow diffusion flame ignition apparatus using 20% methane diluted in nitrogen versus air was integrated with a non-equilibrium magnetically stabilized gliding arc plasma discharge device to allow for measurement of the ignition temperatures with and without plasma activation of the air stream. For strain rates between 200 and 350 s-1, up to a 200 K decrease in ignition temperature with plasma activation compared to only heated air at the same strain rates was observed. Modeling of the counterflow burner with heated air and a range of NO addition (100 - 100000 ppm) allowed for the identification of two ignition regimes, kinetic and thermal, depending upon the strain rates in the system. The importance of heat release and thermal feedback in addition to the kinetic enhancement by NO was realized, especially at higher strain rates. The counterflow diffusion flame ignition modeling of heated air agreed qualitatively and quantitatively with the experimental results, while the modeling with calculations of NO production to mimic the NEMSGAPD showed only qualitative agreement to the experimental results. The discrepancy between the nonequilibrium magnetically stabilized gliding arc plasma discharge experimental and computed results opened up the possibility of other enhancement mechanisms including ions and excited species which were not included in this study.

Original languageEnglish (US)
Title of host publication5th US Combustion Meeting 2007
PublisherCombustion Institute
Pages2768-2783
Number of pages16
ISBN (Electronic)9781604238112
StatePublished - Jan 1 2007
Event5th US Combustion Meeting 2007 - San Diego, United States
Duration: Mar 25 2007Mar 28 2007

Publication series

Name5th US Combustion Meeting 2007
Volume5

Other

Other5th US Combustion Meeting 2007
CountryUnited States
CitySan Diego
Period3/25/073/28/07

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

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  • Cite this

    Ombrello, T., Ju, Y., Gangoli, S., Gutsol, A., & Fridman, A. (2007). Non-thermal ignition enhancement by magnetically stabilized gliding arc plasma discharge. In 5th US Combustion Meeting 2007 (pp. 2768-2783). (5th US Combustion Meeting 2007; Vol. 5). Combustion Institute.