期刊
FUEL
卷 325, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2022.124940
关键词
Trimethylbenzene; Propylbenzene; Shock tube; Ignition delay time; Chemical kinetic modeling
资金
- Natural Science Foundation of China [U2133215]
- Shanxi Scholarship Council of China [2020-115]
- Graduate Innovation Project of Shanxi Province [2021Y654]
- Fundamental Research Funds for the Central Universities of China [2020ZDPYMS05]
This study presents a comparative experimental and kinetic modeling investigation of high-temperature ignition of three C9H12 fuels. The results provide valuable data and insights into the ignition delay time and chemical kinetics, contributing to the understanding and modeling of alkyl aromatics' combustion chemistry.
Alkyl aromatics comprise a significant portion of real fuels. Among various alkyl aromatics, the C9H12 aromatic fuels including n-propylbenzene and trimethylbenzenes are representative alkyl aromatics, which are widely detected in real fuels, and they are widely employed as surrogate compounds in modeling real fuels. Thus, the combustion kinetic study of C9H12 fuels is necessary and urgent for fuel combustion. In this work, comparative experimental and kinetic modeling study of the high-temperature ignition of three C9H12 fuels is performed. New ignition delay time (IDT) measurements are carried out in a high-pressure shock tube (HPST) for 1,2,4-trimethylbenzene and 1,3,5-trimethylbenzene. The studied pressure is 2, 5 and 10 bar, the equivalence ratios are 0.5, 1.0 and 2.0, and the temperature range is from 1090 K to 1600 K for IDT in HPST. The experimental results are simulated using an updated detailed kinetic mechanism. Reaction path analysis and sensitivity analysis are performed to provide insight into the chemical kinetics controlling the ignition of the three C9H12 fuels. The present experimental data set and kinetic model results should be valuable to improve our understanding of the combustion chemistry of alkyl aromatics and to offer practical guidance for the surrogate model development of real fuels.
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