文献类型：期刊文献

中文题名：甲烷同轴射流扩散火焰中自由基的辐射特性

英文题名：Radiation Characteristics of Radicals in Methane Co-Flowing Jet Diffusion Flame

作者：宋旭东[1];郭庆华[1];张婷[1];陈雪莉[1];于广锁[1]

机构：[1]煤气化及能源化工教育部重点实验室(华东理工大学),上海市徐汇区200237

年份：2013

卷号：33

期号：35

起止页码：50

中文期刊名：中国电机工程学报

外文期刊名：Proceedings of the CSEE

收录：CSTPCD;;EI(收录号：20140317204319);Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：国家自然科学基金项目(21176078;21006026);国家重点基础研究计划项目(2010CB227004);中央高校基本科研业务费专项资金资助~~

语种：中文

中文关键词：同轴射流;扩散火焰;辐射发光;火焰结构;当量比例

外文关键词：co-flowing jet; diffusion flame; chemiluminescent emission; flame structure; equivalent ratios

摘要：利用高光谱相机及紫外相机系统,获取CH4/O2同轴射流扩散火焰中CH*和OH*二维辐射发光信息,对火焰辐射特征进行了表征。研究表明:OH*与CH*可以准确地反映扩散火焰内外的结构;在层流状态不同当量比例下OH*分布变化明显,随着当量比例增大,OH*分布范围逐渐变大,逐渐向火焰下游扩展,而CH*主要存在于火焰锋面以内,不随当量比例变化;在湍流条件OH*与CH*分布差别不大,当量比例对其分布范围的影响也降低,随着当量比例的增加OH*与CH*峰值强度也发生变化。
The OH^＊ and CH^＊ chemiluminescence in two-dimension, which were used to characterize the flame radiation, was measured in CH4/O2 co-flowing jet diffusion flame by using hyperspectral and ultraviolet cameras. The results show that OH^＊ and CH^＊ chemiluminescence can reflect the structure of diffusion flame accurately. The distributions of OH^＊ and CH^＊ are different with equivalence ratios in laminar and turbulent flows. As the equivalent ratio increases in laminar flows, OH^＊ distribution range gradually becomes large and extends to the downstream, while CH^＊ mainly exists within the flame front that doesn＆#x02019;t change with the equivalence ratios. But in turbulence, the effect of equivalent ratios on radicals＆#x02019; distribution range is reduced, the OH^＊ and CH^＊ peak intensity also changes with equivalent ratios.