A wide-range modeling study of iso-octane oxidation
- Politecnico di Milano (Italy). Dept. di Chimica Industriale e Ingegneria Chimica
This paper presents a semidetailed kinetic scheme for the oxidation of iso-octane (2,2,4-trimethyl-pentane). Both the low- and high-temperature primary mechanisms are reduced to a lumped kinetic model involving only a limited number of intermediate steps. This primary reaction scheme, similar to the one already presented for n-heptane, is flexible enough to maintain accurate prediction of intermediate components, heat release, and ignition delay times for a wide range of operating parameters. General criteria for the reduction of intermediate species allow an efficient coupling, with a detailed kinetic model of C{sub 1}-C{sub 4} oxidation. Thermochemical oscillations and the negative temperature coefficient (NTC) region of the reaction rate of the low-temperature oxidation of iso-octane in a jet-stirred reactor are reproduced quite well by the model. Several comparisons with experimental data, obtained under very different operating conditions, including a shock tube, a rapid compression machine, flow and jet-stirred reactors, support the applicability of this model of iso-octane oxidation over a wide range of pressures, temperatures, and mixture compositions.
- OSTI ID:
- 445606
- Journal Information:
- Combustion and Flame, Vol. 108, Issue 1-2; Other Information: PBD: Jan 1997
- Country of Publication:
- United States
- Language:
- English
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