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Extinction of Inhibited, Stretched and Diluted Counterflowing Flames.


pdf icon Extinction of Inhibited, Stretched and Diluted Counterflowing Flames. (398 K)
Yang, M. H.; Puri, I. K.; Hamins, A.

Combustion Institute/Central and Eastern States Section. Combustion Fundamentals and Applications. Joint Technical Meeting. March 15-17, 1993, New Orleans, LA, 56-60 pp, 1993.

Keywords:

flame research; methodology; kinetics; flame extinguishment

Abstract:

It has been shown that a criteria for flame extinction can be described by the Damkohler Number which is the ratio of a characteristic flow or diffusion time to a characteristic chemical reaction time. As the Damkohler Number is reduced the fuel burning rate gradually decreases until a critical value is attained when the flame will abruptly extinguish. The objective of this study is to investigate differences in the detailed chemical mechanisms which control the kinetics of non-premixed flames as they approach extinction by stretch, inhibition, and dilution.