Flammability limit extension of non-premixed counterflow flames via stabilized non-equilibrium plasma gliding arc

T. Ombrello, X. Qin, Yiguang Ju, C. Carter

Research output: Contribution to conferencePaper

Abstract

The effect of a piecewise non-equilibrium gliding arc plasma discharge on the stabilization and extinction of nitrogen diluted, methane/air counterflow non-premixed flames was investigated both experimentally and numerically. Up to a 220 percent increase in the extinction strain rate was observed. To quantify whether the enhancement was from thermal or nonthermal effects, Rayleigh scattering thermometry and OH Planar Laser Induced Fluorescence (PLIF) was performed to obtain experimental temperature profiles. Numerical computation using detailed chemistry was performed to obtain temperature profiles with elevated temperature and radical addition as prescribed boundary conditions. The computation with only an increase in temperature to mimic the plasma agreed well with the experimental results. This suggested that the effect of a non-equilibrium plasma discharge with low gas temperatures on a non-premixed flame was dominated by thermal effects.

Original languageEnglish (US)
Pages361-364
Number of pages4
StatePublished - Dec 1 2005
Event5th Asia-Pacific Conference on Combustion, ASPACC 2005 - Adelaide, SA, Australia
Duration: Jul 17 2005Jul 20 2005

Other

Other5th Asia-Pacific Conference on Combustion, ASPACC 2005
CountryAustralia
CityAdelaide, SA
Period7/17/057/20/05

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

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    Ombrello, T., Qin, X., Ju, Y., & Carter, C. (2005). Flammability limit extension of non-premixed counterflow flames via stabilized non-equilibrium plasma gliding arc. 361-364. Paper presented at 5th Asia-Pacific Conference on Combustion, ASPACC 2005, Adelaide, SA, Australia.