乙烯燃烧化学动力学机理的简化与分析

Translated title of the contribution: Skeletal chemical kinetic model generation and analysis for combustion of ethylene

Rui Li, Guoqiang He, Fei Qin, Bing Liu, Shuanghui Xi

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The detailed chemical kinetic mechanism for ethylene was systematically reduced and analyzed using USC(University of Southern California)-Ⅱ mechanism with directed relation graph with error propagation (DRGEP) and path flux analysis (PFA) methods under the wide range of conditions. A skeletal mechanism with 38 species and 243 reactions was achieved from intersection of the two resulting skeletal mechanisms in the first-stage reduction. A skeletal mechanism of ethylene with 30 species and 167 reactions was obtained using sensitivity analysis in the further reduction, and maximum auto-ignition error was 7.10% under the above simulation conditions. This 30 species mechanism showed that, the auto-ignition delay times, laminar flame speeds, temperature and species profiles, brute-force sensitivity coefficients, reaction paths and uncertainty analysis were in good agreement with those of the detailed mechanism. At last, a reduced mechanism including 24 species and 20 global reactions was obtained using the quasi steady state approximation (QSSA) method. This mechanism reproduced satisfactorily auto-ignition delay times, making it more suitably for combustion modeling of engines.

Translated title of the contributionSkeletal chemical kinetic model generation and analysis for combustion of ethylene
Original languageChinese (Traditional)
Pages (from-to)2074-2083
Number of pages10
JournalHangkong Dongli Xuebao/Journal of Aerospace Power
Volume33
Issue number9
DOIs
StatePublished - 1 Sep 2018

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