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Title: High temperature shock tube experiments and kinetic modeling study of diisopropyl ketone ignition and pyrolysis

Authors:
ORCiD logo; ; ; ; ; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1416661
Grant/Contract Number:
FE0025260
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Combustion and Flame
Additional Journal Information:
Journal Volume: 177; Journal Issue: C; Related Information: CHORUS Timestamp: 2018-01-11 18:39:11; Journal ID: ISSN 0010-2180
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

Citation Formats

Barari, Ghazal, Pryor, Owen, Koroglu, Batikan, Sarathy, S. Mani, Masunov, Artëm E., and Vasu, Subith S.. High temperature shock tube experiments and kinetic modeling study of diisopropyl ketone ignition and pyrolysis. United States: N. p., 2017. Web. doi:10.1016/j.combustflame.2016.12.003.
Barari, Ghazal, Pryor, Owen, Koroglu, Batikan, Sarathy, S. Mani, Masunov, Artëm E., & Vasu, Subith S.. High temperature shock tube experiments and kinetic modeling study of diisopropyl ketone ignition and pyrolysis. United States. doi:10.1016/j.combustflame.2016.12.003.
Barari, Ghazal, Pryor, Owen, Koroglu, Batikan, Sarathy, S. Mani, Masunov, Artëm E., and Vasu, Subith S.. Wed . "High temperature shock tube experiments and kinetic modeling study of diisopropyl ketone ignition and pyrolysis". United States. doi:10.1016/j.combustflame.2016.12.003.
@article{osti_1416661,
title = {High temperature shock tube experiments and kinetic modeling study of diisopropyl ketone ignition and pyrolysis},
author = {Barari, Ghazal and Pryor, Owen and Koroglu, Batikan and Sarathy, S. Mani and Masunov, Artëm E. and Vasu, Subith S.},
abstractNote = {},
doi = {10.1016/j.combustflame.2016.12.003},
journal = {Combustion and Flame},
number = C,
volume = 177,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.combustflame.2016.12.003

Citation Metrics:
Cited by: 3works
Citation information provided by
Web of Science

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  • Toluene is often used as a fluorescent tracer for fuel concentration measurements, but without considering whether it affects the auto-ignition properties of the base fuel. We investigate the auto-ignition of pure toluene and its influence on the auto-ignition of n-heptane and iso-octane/air mixtures under engine-relevant conditions at typical tracer concentrations. Ignition delay times {tau}{sub ign} were measured behind reflected shock waves in mixtures with air at {phi}=1.0 and 0.5 at p=40 bar, over a temperature range of T=700-1200 K and compared to numerical results using two different mechanisms. Based on the models, information is derived about the relative influence ofmore » toluene on {tau}{sub ign} on the base fuels as function of temperature. For typical toluene tracer concentrations {<=}10%, the ignition delay time {tau}{sub ign} changes by less than 10% in the relevant pressure and temperature range. (author)« less
  • Iso-cetane (2,2,4,4,6,8,8-heptamethylnonane, C{sub 16}H{sub 34}) is a highly branched alkane reference compound for determining cetane ratings. It is also a candidate branched alkane representative in surrogate mixtures for diesel and jet fuels. Here new experiments and kinetic modeling results are presented for the autoignition of iso-cetane at elevated temperatures and pressures relevant to combustion in internal combustion engines. Ignition delay time measurements were made in reflected shock experiments in a heated shock tube for {phi} = 0.5, 1.0, and 1.5 iso-cetane/air mixtures at temperatures ranging from 879 to 1347 K and pressures from 8 to 47 atm. Ignition delay timesmore » were measured using electronically excited OH emission, monitored through the shock tube end wall, and piezoelectric pressure transducer measurements, made at side wall locations. A new kinetic mechanism for the description of the oxidation of iso-cetane is presented that is developed based on a previous mechanism for iso-octane. Computed results from the mechanism are found in good agreement with the experimental measurements. To our knowledge, the ignition time measurements for iso-cetane presented here are the first of their kind. (author)« less
  • Ignition of propane has been studied in a shock tube and by computational modeling to determine the effect of methyl tert-butyl ether (MTBE) as a fuel additive. MTBE and isobutene were added to amounts up to 25% of the fuel to propane-oxygen-argon mixtures to shock-tube experiments covering a range of temperatures between 1450 and 1800 K. Ignition delays were measured from chemiluminescence at 432 nm due to excited CH radicals. The temperature dependence of the ignition rates was analyzed to yield Arrhenium parameters of E{sub a}{sup {minus}}40 kcal/mol and log(A) {sup {minus}}9.0 sec{sup {minus}1} for the overall reaction. Reactions involvingmore » MTBE and its decomposition products were combined with an established propane mechanism in a numerical model to describe the kinetic interaction of this additive with a typical hydrocarbon fuel. The experiments and the kinetic model both show that MTBE and isobutene retard propane ignition with nearly equal efficiency. The kinetic model demonstrates that isobutene kinetics are responsible for inhibition by both MTBE and isobutene, and the specific elementary reactions which produce this behavior are identified. 19 refs., 1 fig., 3 tabs.« less
  • Ignition of propane has been studied in a shock tube and by computational modeling to determine the effect of methyl tert-butyl ether (MTBE) as a fuel additive. MTBE and isobutene were added in amounts up to 25% of the fuel to propane-oxygen-argon mixtures in shock-tube experiments covering a range of temperatures between 1450 and 1800 K. Ignition delays were measured from chemiluminescence at 432 nm due to excited CH radicals. The temperature dependence of the ignition rates was analyzed to yield Arrhenius parameters of E{sub a}{approximately}40 kcal/mol and log (A){approximately} 9.0 sec{sup {minus}1} for the overall reaction. Reactions involving MTBEmore » and its decomposition products were combined with an established propane mechanism in a numerical model to describe the kinetic interaction of this additive with a typical hydrocarbon fuel. The experiments and the kinetic model both show that MTBE and isobutene retard propane ignition with nearly equal efficiency. The kinetic model demonstrates that isobutene kinetics are responsible for inhibition by both MTBE and isobutene, and the specific elementary reactions which produce this behavior are identified.« less