S. Burke, W. Metcalfe, O. Herbinet
Nov 1, 2014
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Influential Citations
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Quality indicators
Journal
Combustion and Flame
Abstract
Propene is significant component of Liquefied Petroleum Gas (LPG) and an intermediate in 11 the combustion of higher order hydrocarbons. To better understand the combustion 12 characteristics of propene, this study and its companion paper present new experimental data 13 from jet-stirred (JSR) and flow reactors (Part I) and ignition delay time and flame speed 14 experiments (Part II). 15 Species profiles from JSR experiments are presented and were obtained at near-atmospheric 16 pressure over a temperature range of 800–1100 K and for equivalence ratios from φ = 0.64 to 17 2.19. The new JSR data were obtained at lower dilution levels and temperatures than previously 18 published. Also reported are species profiles from two high-pressure flow reactor facilities: the 19 Princeton Variable Pressure Flow Reactor (VPFR) and the High Pressure Laminar Flow Reactor 20 (HPLFR). The VPFR experiments were conducted at pressures of 6–12.5 atm, in the temperature 21 range 843–1020 K and at equivalence ratios of 0.7–1.3. The HPLFR experiments were conducted 22 at 15 atm, at a temperature of 800 K and at equivalence ratios of 0.35–1.25. The flow reactor data 23 is at higher pressures and lower temperatures than existing data in the literature. 24 A detailed chemical kinetic mechanism has been simultaneously developed to describe the 25 combustion of propene under the experimental conditions described above. Important reactions 26 highlighted via flux and sensitivity analyses include: hydrogen atom abstraction from propene by molecular oxygen, hydroxyl, and hydroperoxyl radicals; allyl-allyl radical recombination; the 28 reaction between allyl and hydroperoxyl radicals; and the reactions of 1- and 2-propenyl radicals 29 with molecular oxygen. The current mechanism accurately predicts the combustion 30 characteristics of propene across the range of experimental conditions presented in this study, 31 from jet-stirred and flow reactors and for ignition delay times and flame speed measurements 32 presented in Part II. In comparison to a previous mechanism, AramcoMech 1.3, the current 33 mechanism results in much improved performance, which highlights the importance of the new 34 experimental data in constraining the important reactions. 35