Flame propagation and combustion characteristics of stratified charge propane-air mixture with swirling flow in a constant-volume vessel

A. Nishiyama, E. Tomita, N. Kawahara, S. Yoshiyama, Y. Hamamoto

Research output: Contribution to conferencePaperpeer-review

Abstract

The flame propagation and the combustion characteristics of stratified fuel concentration field were studied using a cylindrical constant volume vessel. A swirling fuel-air mixture was produced in the vessel. A rich fuel concentration was formed near the center of the vessel by the injection of propane and lean mixture near the wall. The gas flow field was obtained with a laser Doppler velocimeter in advance. The pressure history in the combustion chamber was analyzed to determine the combustion characteristics. The flame could propagate and the combustion occurred even in an ultra lean mixture of equivalence ratio of 0.3:1 in total. As the fuel concentration near the spark location approximates stoichiometric mixture ratio, flame propagation of the initial stage of the combustion became faster. When stratified mixtures with the same pattern of fuel concentration but different turbulence intensities were considered, the main combustion period decreased with turbulence intensity, since the burning velocity also increased. Original is an abstract.

Original languageEnglish
Number of pages1
Publication statusPublished - Dec 1 2002
Externally publishedYes
Event29th International Symposium on Combustion - Sapporo, Japan
Duration: Jul 21 2002Jul 26 2002

Other

Other29th International Symposium on Combustion
CountryJapan
CitySapporo
Period7/21/027/26/02

ASJC Scopus subject areas

  • Engineering(all)

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