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http://dx.doi.org/10.15231/jksc.2013.18.3.024

Direct Observation of Premixed Flame Propagation Characteristics in an Annular Coaxial 5-Tubes Burner  

Cho, Moon Soo (중앙대학교 기계공학부 대학원)
Baek, Da Bin (중앙대학교 기계공학부 대학원)
Kim, Nam Il (중앙대학교 기계공학부)
Publication Information
Journal of the Korean Society of Combustion / v.18, no.3, 2013 , pp. 24-30 More about this Journal
Abstract
Flame stabilization characteristics of premixed flames in an annular coaxial 5-tubes burner (AC5TB) were investigated experimentally. The AC5TB was made of five quartz tubes, and the flame stabilization conditions in that burner were investigated with the variation of equivalence ratio and the flow velocities. Flame behaviors inside of narrow annular tubes could be observed directly. Overall flame stabilization conditions were similar to that of the previous study, while the flame behaviors and structures were different mainly due to the controlled uniform distribution of the velocities in channels. Flame flashback conditions were thought to be governed by the competition between heat release rate, heat loss and heat recirculation in each channel. Stationary flames at a fixed location were compared in its velocity distribution and burned gas temperature across the channel. This AC5TB can be a basic configuration for the development of flame stabilization model of porous media combustors, and it will help understand about the real behavior of flames in meso-scale combustion spaces.
Keywords
Annular coaxial multi-tube; Premixed flame; Flame stabilization; Porous media combustor;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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