|本期目录/Table of Contents|

[1]郭 鹏,陈 正. NOx对甲烷/空气着火过程的影响[J].燃烧科学与技术,2010,(05):472-476.
 GUO Peng,CHEN Zheng. Effects of NOx on the Ignition of Methane/Air Mixtures[J].Journal of Combustion Science and Technology,2010,(05):472-476.
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 NOx对甲烷/空气着火过程的影响()
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《燃烧科学与技术》[ISSN:1006-8740/CN:12-1240/TK]

卷:
期数:
2010年05期
页码:
472-476
栏目:
出版日期:
2010-10-15

文章信息/Info

Title:
 Effects of NOx on the Ignition of Methane/Air Mixtures
作者:
 郭 鹏陈 正
 (北京大学工学院湍流与复杂系统国家重点实验室,北京 100871)
Author(s):
 GUO PengCHEN Zheng
 (State Key Laboratory for Turbulence and Complex Systems,College of Engineering,Peking University, Beijing 100871,China)
关键词:
 着火NOx甲烷敏感性分析
Keywords:
 ignitionNOxmethanesensitivity analysis
分类号:
TK411
文献标志码:
A
摘要:
 以零维均质甲烷/空气/NOx预混气体为研究对象,通过数值模拟研究了其在不同初始温度以及不同NOx初始浓度下的着火过程,并借助于敏感性分析和化学反应路径分析揭示了NO和NO2促进甲烷/空气着火的化学反应动力学机理.研究结果表明,在不添加NO和NO2时,甲基CH3氧化速度缓慢,从而导致甲烷/空气不易着火;在添加NO或NO2后,甲基CH3可以迅速被氧化,从而促进了甲烷/空气的着火.添加NO或者NO2相当于给CH3氧化过程提供了催化剂.
Abstract:
 Homogeneous ignition of methane/air/NOx mixtures was investigated numerically. Simulations of ignition proc-esses at different initial temperatures and NOx concentrations were conducted. The chemical mechanism for the ignition en-hancement of methane/air due to NO and NO2 was revealed via sensitivity analysis and reaction-path analysis. It was found that the oxidization of CH3 is relatively slow without the addition of NOx,which results in the slow ignition of methane/air. However,CH3 can be quickly oxidized when NO or NO2 is added. It was demonstrated that NO or NO2 works as the cata-lyst for the oxidization of CH3.

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备注/Memo

备注/Memo:
 通讯作者:陈 正,cz@pku.edu.cn.
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