Ignition and extinction of non-premixed flames of single-component liquid hydrocarbons, jet fuels, and their surrogates

In the present study, extinction strain rates and ignition temperatures of a wide range of jet fuels were experimentally determined in the counterflow configuration under non-premixed conditions. Similar measurements were also made for single-component hydrocarbon fuels and surrogate fuels, and were...

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Bibliographic Details
Published in:Proceedings of the Combustion Institute 2007, Vol.31 (1), p.1205-1213
Main Authors: Holley, A.T., Dong, Y., Andac, M.G., Egolfopoulos, F.N., Edwards, T.
Format: Article
Language:English
Subjects:
Carbon
Combustion
Extinction
Fuels
Hydrocarbon fuels
Ignition
Jet fuels
Liquids
Non-premixed flames
Surrogate fuels
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Summary:In the present study, extinction strain rates and ignition temperatures of a wide range of jet fuels were experimentally determined in the counterflow configuration under non-premixed conditions. Similar measurements were also made for single-component hydrocarbon fuels and surrogate fuels, and were compared with those obtained for the jet fuels. The experiments were conducted at atmospheric pressure and elevated temperatures. Comparing single-component hydrocarbon fuels, it was found that those with lower carbon number exhibit greater resistance to extinction and greater ignition propensity. The results for the jet fuels revealed that there is a large variation in both extinction and ignition limits. Jet fuels with similar extinction behavior were found to display a rather different ignition response. Two recently proposed JP-8 surrogates were also tested, and both the ignition and extinction states of a reference JP-8 fuel were not predicted satisfactorily. Both surrogates were found to exhibit a more robust combustion behavior compared to JP-8, as manifested by their increased ignition propensity and their increased resistance to extinction.
ISSN:1540-7489
1873-2704
DOI:10.1016/j.proci.2006.07.208