Comparison of autoignition characteristics of <i>n</i>-heptane, methylcyclohexane and toluene

LI Bin; LI Ping; RAO Fan; ZHANG Chang-hua; LI Xiang-yuan

doi:10.13224/j.cnki.jasp.2015.03.022

Comparison of autoignition characteristics of n-heptane, methylcyclohexane and toluene

doi: 10.13224/j.cnki.jasp.2015.03.022

1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;
2. College of Chemical Engineering, Sichuan University, Chengdu 610065, China

基金项目:

National Natural Science Foundation of China(91016002)

详细信息

作者简介:
LI Bin：LI Ping, lpscun@scu.edu.cn

中图分类号: V312⁺.1
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- 收稿日期: 2013-10-29
- 刊出日期: 2015-03-28

Comparison of autoignition characteristics of n-heptane, methylcyclohexane and toluene

1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;
2. College of Chemical Engineering, Sichuan University, Chengdu 610065, China

Funds:

National Natural Science Foundation of China(91016002)

摘要

摘要: The autoignition characteristics of three C₇ hydrocarbon fuels, n-heptane, methylcyclohexane and toluene, were comparatively investigated. Ignitions were performed behind the reflected shock waves in a shock tube. The ignition delay times of these fuels were measured at the same igintion conditions with constant fuel mole fraction of 1.0%, equivalence ratio of 1.0, ignition pressure of 1.0×10⁵Pa (one more 2.0×10⁵Pa for n-heptane) and temperatures of 1166-1662K. The correlation formula of ignition delay dependence of three fuels on igintion conditions was deduced separately. Results show that the ignition delay time of n-heptane is the shortest while that of toluene is the longest at the same ignition conditions. The ignition delay time of methylcyclohexane is most sensitive to the temperature while that of n-heptane is the least. The comparison of current ignition delay times with the predictions of available chemical kinetic reaction mechanisms has been presented to validate the reliability of mechanisms. The important chemical reactions during the ignition process have been obtained from the sensitivity analysis.
- hydrocarbon fuels /
- ignition delay time /
- shock tube /
- kinetic mechanism /
- sensitivity analysis
Abstract: The autoignition characteristics of three C₇ hydrocarbon fuels, n-heptane, methylcyclohexane and toluene, were comparatively investigated. Ignitions were performed behind the reflected shock waves in a shock tube. The ignition delay times of these fuels were measured at the same igintion conditions with constant fuel mole fraction of 1.0%, equivalence ratio of 1.0, ignition pressure of 1.0×10⁵Pa (one more 2.0×10⁵Pa for n-heptane) and temperatures of 1166-1662K. The correlation formula of ignition delay dependence of three fuels on igintion conditions was deduced separately. Results show that the ignition delay time of n-heptane is the shortest while that of toluene is the longest at the same ignition conditions. The ignition delay time of methylcyclohexane is most sensitive to the temperature while that of n-heptane is the least. The comparison of current ignition delay times with the predictions of available chemical kinetic reaction mechanisms has been presented to validate the reliability of mechanisms. The important chemical reactions during the ignition process have been obtained from the sensitivity analysis.
- hydrocarbon fuels /
- ignition delay time /
- shock tube /
- kinetic mechanism /
- sensitivity analysis

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参考文献(21)

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Comparison of autoignition characteristics of n-heptane, methylcyclohexane and toluene

doi: 10.13224/j.cnki.jasp.2015.03.022

作者简介:
LI Bin：LI Ping, lpscun@scu.edu.cn

计量

Comparison of autoignition characteristics of n-heptane, methylcyclohexane and toluene

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留言板

Comparison of autoignition characteristics of n-heptane, methylcyclohexane and toluene

doi: 10.13224/j.cnki.jasp.2015.03.022

作者简介: LI Bin：LI Ping, lpscun@scu.edu.cn

计量

出版历程

Comparison of autoignition characteristics of n-heptane, methylcyclohexane and toluene

计量

出版历程

目录

作者简介:
LI Bin：LI Ping, lpscun@scu.edu.cn