臭氧对甲烷/空气层流火焰传播速度影响规律

doi:10.6040/j.issn.1672-3961.0.2016.352

山东大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (4): 59-63.doi: 10.6040/j.issn.1672-3961.0.2016.352

臭氧对甲烷/空气层流火焰传播速度影响规律

肖迪^1,2,廉静¹,纪少波^1*,赵盛晋¹,徐怀民¹

1. 山东大学能源与动力工程学院, 山东济南 250061;2. 上海交通大学机械与动力工程学院, 上海 200240

收稿日期:2016-09-09 出版日期:2017-08-20 发布日期:2016-09-09
通讯作者: 纪少波(1979— ),男,山东烟台人,副教授,博士,主要研究方向为气体机工作过程研究.E-mail: jobo@sdu.edu.cn E-mail:xdsjtu@sjtu.edu.cn
作者简介:肖迪(1993— ),男,山东聊城人,硕士研究生,主要研究方向为发动机喷雾过程.E-mail: xdsjtu@sjtu.edu.cn
基金资助:
山东省自然科学基金资助项目(ZR2013EEQ026);中国博士后基金资助项目(2015M572029)

Influence of ozone addition on laminar flame speed in methane-air lean mixtures

XIAO Di^1,2, LIAN Jing¹, JI Shaobo^1*, ZHAO Shengjin¹, XU Huaimin¹

1. School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China;
2. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2016-09-09 Online:2017-08-20 Published:2016-09-09

摘要/Abstract

摘要： 为提高气体机稀薄燃烧时的燃烧性能,解决天然气发动机在稀薄燃烧情况下点火能量高以及火焰传播速度慢的问题,利用强氧化性的臭氧对燃料进行改质,进而提高天然气燃烧性能。通过Chemkin软件研究臭氧添加对甲烷层流火焰传播速度的影响,并对臭氧助燃的化学机理进行数值分析。试验结果表明:添加臭氧后,层流火焰传播速度增加,在稀薄混合气条件下增加量更明显。在不同温度及压力条件下,掺加臭氧均能增加层流火焰传播速度,最大可增加36%。分析表明:掺加臭氧能明显提升自由基及中间产物的生成量,进而提高甲烷层流火焰传播速度。

关键词: Chemkin, 化学反应动力学分析, 天然气, 层流火焰传播速度, 臭氧

Abstract: A new method was proposed to improve lean burn combustion performance of natural gas engine and to solve the problems of high ignition energy and slow flame speed of combustion of natural gas in lean burn condition by using the ozone with strong oxidation. The influence of ozone addition on laminar flame speed was studied and numerical analysis of chemical mechanism was carried out using Chemkin software. Results showed that laminar flame speed increased with ozone addition and improvement was more obvious with lean mixture. Moreover, laminar flame speed could be increased in different temperature and pressure situation with ozone addition and the maximum increment of laminar flame speed could reach 36%.The concentration of free radicals and intermediate products increased obviously with ozone addition and then improved the combustion characteristics of methane.

Key words: natural gas, laminar flame speed, ozone, Chemkin, chemical reaction kinetics

中图分类号:

TK464

肖迪,廉静,纪少波,赵盛晋,徐怀民. 臭氧对甲烷/空气层流火焰传播速度影响规律[J]. 山东大学学报(工学版), 2017, 47(4): 59-63.

XIAO Di, LIAN Jing, JI Shaobo, ZHAO Shengjin, XU Huaimin. Influence of ozone addition on laminar flame speed in methane-air lean mixtures[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2017, 47(4): 59-63.

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臭氧对甲烷/空气层流火焰传播速度影响规律

Influence of ozone addition on laminar flame speed in methane-air lean mixtures

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