Characteristics of microscale combustion in a narrow heated channel

K. Maruta, J. K. Parc, K. C. Oh, T. Fujimori, S. S. Minaev, R. V. Fursenko

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The characteristics of microscale combustion were investigated by using a microchannel heated by an external source. The inner diameter of the channel was 2 mm, which was slightly smaller than the quenching distance of the stoichiometric methane-air mixture under normal conditions. The effects of the equivalence ratio and the averaged flow velocity on the characteristics of combustion in the microchannel were examined. At a channel-wall temperature of ≈ 1000°C, flames could be stabilized at equivalence ratios of 0.05-1.9 and mixture velocities up to 150 cm/sec in a U-shaped quartz-glass channel. At moderate equivalence ratios and lower velocity conditions within the flammability region, oscillatory combustion was observed. A simple analytical model predicting flame oscillations on the basis of the linear analysis of steady solutions is proposed.

Original languageEnglish
Pages (from-to)21-29
Number of pages9
JournalFizika Goreniya i Vzryva
Volume40
Issue number5
Publication statusPublished - 2004 Nov 25
Externally publishedYes

Keywords

  • Excess Enthalpy Combustion
  • Microcombustion
  • Swiss Roll Burner

ASJC Scopus subject areas

  • Mechanical Engineering
  • Process Chemistry and Technology

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