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Influence of temperature and hydroxyl concentration on incipient soot formation in premixed flamesCritical equivalence ratios phi(c) have been measured as a function of temperature (1600-1880 K) for premixed flames at atmospheric pressure. The five fuels studied are methane, ethane, propane, ethylene, and acetylene. The flames were stabilized on a flat flame burner and the temperatures were measured using sodium D-line reversal. A linear relationship is found between In phi(c) and 1/T for each fuel. Based on a global kinetic model in which soot precursors are formed by fuel pyrolysis and oxidized by OH, a predictive correlation has been developed which shows the influence of temperature, OH concentration, and C/H ratio on sooting tendency. This correlation describes all of the measured phi(c) versus temperature data, suggesting that the overall mechanism of soot formation is similar among aliphatic fuels.
Document ID
19860044332
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Harris, M. M.
(Purdue Univ. West Lafayette, IN, United States)
King, G. B.
(Purdue Univ. West Lafayette, IN, United States)
Laurendeau, N. M.
(Purdue University West Lafayette, IN, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1986
Publication Information
Publication: Combustion and Flame
Volume: 64
ISSN: 0010-2180
Subject Category
Inorganic And Physical Chemistry
Accession Number
86A29070
Funding Number(s)
CONTRACT_GRANT: NAG3-360
Distribution Limits
Public
Copyright
Other

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