Formation of multiple flame fronts in heated micro channel

E. Sereshchenko, S. Minaev, R. Fursenko, A. Fan, Kaoru Maruta

Research output: Contribution to conferencePaper

Abstract

A phenomenon of simultaneous ignition of several fronts of chemical reaction in the micro channel with a walls temperature gradient was revealed. The gas combustion in straight tube and in the space between two disks with radial gas flow was theoretically investigated. In the both configurations the gas-gap clearance was less than critical diameter determined at ambient temperature and thus to sustain combustion the downstream walls temperature was over ambient temperature. Numerical simulations of flame repetitive ignition and extinction process revealed possibility of simultaneous ignition of two flame fronts at the hot part of the channel. One front was normal flame propagating upstream from hot to cold part of the channel whereas another front moved down stream and disappeared as the fuel burned down. On the base of the present study the new mechanism of ignition and incomplete combustion of a gas mixture in micro systems is offered.

Original languageEnglish
Publication statusPublished - 2009 Jan 1
Event7th Asia-Pacific Conference on Combustion, ASPACC 2009 - Taipei, Taiwan, Province of China
Duration: 2009 May 242009 May 27

Conference

Conference7th Asia-Pacific Conference on Combustion, ASPACC 2009
CountryTaiwan, Province of China
CityTaipei
Period09/5/2409/5/27

ASJC Scopus subject areas

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

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