Abstract
Ignition delay times are obtained for kerosene/air mixtures behind the reflected shock waves at temperatures between 1445 and 1650 K, at a pressure of 0.11 MPa and an equivalence ratio of 1.0. A nebulization device with Laval nozzle is used to nebulize kerosene and form an aerosol phase, which evaporates and diffuses rapidly behind the incident shock waves. Mixtures auto-ignite behind the reflected shock waves. An ICCD is used to visualize the kerosene/air mixture’s ignition characteristics. The mixture’s ignition intensity increases with increase in initial temperature. Continuous and irregular flames exist below 1515 K while plane and discontinuous flames exist over 1560 K. Ignition delay times decrease with increase in initial temperature. Experimental data shows good agreement with results reported previously in the literature. A new surrogate (consisting of 10% toluene, 10% ethylbenzene and 80% n-decane) is proposed for kerosene. Honnet et al.’s mechanism is used to simulate the ignition of kerosene with calculations agreeing well with the experimental data. The sensitivity of reaction H+O2⇔OH+O, which shows the highest sensitivity to the ignition delay time, increases with an increase in temperature. The chain breaching reaction of CH3 with O2 accelerates the total reaction rate and the H-atom abstraction of n-decane controls the total reaction rate. The rate of production and instantaneous heat production indicate that two reactions, H+O2⇔OH+O and O+H2⇔OH+H, are the key reactions to the formation of OH radicals, as well as the main endothermic reaction. However, the reaction of R3 is the main heat release reaction during ignition. Flame structure analysis shows that initial pressure is increased slightly as CO and H2O will appear before main ignition.
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References
Curran E T. Scramjet engines: The first forty years. J Propul Power, 2001, 17: 1138–1148
Char J M, Liou W J, Yeh J H, Chiu C L. Ignition and combustion study of JP-8 fuel in a supersonic flow field. Shock Waves, 1996, 6: 259–266
Vasu S S, Davidson D F, Hanson R K. Jet fuel ignition delay times: Shock tube experiments over wide conditions and surrogate model predictions. Combust Flame, 2008, 152: 125–143
Ranzi E, Frassoldati A, Granata C, et al. Wide range kinetic modeling study of the pyrolysis, partial oxidation, and combustion of heavy n-alkanes. Ind Eng Chem Res, 2005, 44: 5170–5183
Honnet S, Seshadri K, Niemann U, et al. A surrogate fuel for kerosene. P Combust Inst, 2009, 32: 485–492
Liao Q, Xu S L. The ignition delay measurement of atomized kerosene air mixture in an aerosol shock tube. J Exp Fluid Mech, 2009, 23: 70–74
Davidson D F, Haylett D R, Hanson R K. Development of an aerosol shock tube for kinetic studies of low vapor pressure fuels. Combust Flame, 2008, 155: 108–117
Wang G F, Ma C B, Wang B Y, et al. Direct observations of reaction zone structure in shock induced ignition of methane air mixure. Chinese Sci Bull, 2009, 54: 2247–2255
Horning D C, Davidson D F, Hanson R K. Study of the high temperature autoignition of n-alkane/O2/Ar mixtures. J Propul Power, 2002, 18: 363–371
Vasudevan V, Davidson D F, Hanson R K. Shock tube measurements of toluene ignition times and OH concentration time histories. P Combust Inst, 2005, 30: 1155–1163
Dagaut P, Cathonnet M. The ignition, oxidation, and combustion of kerosene: A review of experimental and kinetic modeling. Prog Energ Combust Sci, 2006, 32: 48–92
Patterson P M, Kyne A G, Pourkashanian M et al. Combustion of kerosene in counterflow diffusion flames. J Propul Power, 2001, 17: 453–460
Edwards T, Maurice L Q, Surrogate mixtures to represent complex aviation and rocket fuels. J Propul Power, 2001, 17: 461–466
Turanyi T. Applications of sensitivity analysis to combustion chemistry. Reliab Eng Syst Safety, 1997, 57: 41–48
Turanyi T, Tomlin A S, Pilling M J. On the error of the quasi steady state approximation. J Phys Chem, 1993, 97: 163–172
Dagaut P. On the kinetics of hydrocarbons oxidation from natural gas to kerosene and diesel fuel. Phys Chem Chem Phys, 2002, 4: 2079–2094
Shen H S, Vanderover J, Oehlschlaeger M A. A shock tube study of iso-octane ignition at elevated pressures: The influence of diluent gases. Combust Flame, 2008, 115: 739–755
Curran H J, Gaffuri P, Pitz W J. A comprehensive modeling study of iso-octane oxidation. Combust Flame, 2002, 129: 253–280
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Zhang, Y., Huang, Z., Wang, J. et al. Shock tube study on auto-ignition characteristics of kerosene/air mixtures. Chin. Sci. Bull. 56, 1399–1406 (2011). https://doi.org/10.1007/s11434-010-4293-y
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DOI: https://doi.org/10.1007/s11434-010-4293-y