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Kinetic effects of nanosecond discharge on ignition delay time☆

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The effects of nanosecond discharge on ignition characteristics of a stoichiometric methane–air mixture without inert diluent gas were studied by numerical simulation at 0.1 MPa and an initial temperature of 1300 K. A mod-ified non-equilibrium plasma kinetic model was developed to simulate the temporal evolution of particles pro-duced during nanosecond discharge and its afterglow. As important roles in ignition, path fluxes of O and H radicals were analyzed in detail. Different strength of E/N and different discharge duration were applied to the discharge process in this study. And the results presented that a deposited energy of 1–30 mJ·cm?3 could dramat-ical y reduce the ignition delay time. Furthermore, temperature and radicals analysis was conducted to investigate the effect of non-equilibrium plasma on production of intermediate radicals. Finally, sensitivity analysis was employed to have further understanding on ignition chemistries of the mixture under nanosecond discharge. ? 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. Al rights reserved.

Nanosecond dischargeIgnition delay timeMethaneKinetic modelingNumerical simulation

Xingqian Mao、Guoxiu Li、Qi Chen、Yujun Zhao

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School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China

Supported by the National Natural Science Foundation of ChinaFundamental Research Funds for the Central Universities

513760212015YJS146

2016

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDCSCDSCIEI
影响因子:0.818
ISSN:1004-9541
年,卷(期):2016.24(12)
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