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[1]许开龙,李卓然,张 海,等.煤粉射流火焰中碳烟浓度分布的LII 测量[J].燃烧科学与技术,2018,(03):232-237.[doi:10.11715/rskxjs.R201709009]
 Xu Kailong,Li Zhuoran,Zhang Hai,et al.Laser Induced Incandescence Measurement of Soot Distribution in a Coal Jet Flame[J].Journal of Combustion Science and Technology,2018,(03):232-237.[doi:10.11715/rskxjs.R201709009]
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煤粉射流火焰中碳烟浓度分布的LII 测量()
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《燃烧科学与技术》[ISSN:1006-8740/CN:12-1240/TK]

卷:
期数:
2018年03
页码:
232-237
栏目:
出版日期:
2018-06-15

文章信息/Info

Title:
Laser Induced Incandescence Measurement of Soot Distribution in a Coal Jet Flame
作者:
许开龙1李卓然1张 海1吴玉新1罗开红2吕俊复1
1. 清华大学热能工程系热科学与动力工程教育部重点实验室,北京 100084;2. 清华大学燃烧能源中心,北京 100084
Author(s):
Xu Kailong1Li Zhuoran1Zhang Hai1Wu Yuxin1Luo Kaihong2Lü Junfu1
1. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China;2. Center for Combustion Energy,Tsinghua University,Beijing 100084,China
关键词:
激光诱导白炽光法碳烟煤粉气流激光能量密度
Keywords:
laser induced incandescence(LII)sootcoal streamlaser fluence
分类号:
TK2
DOI:
10.11715/rskxjs.R201709009
文献标志码:
A
摘要:
基于Hencken 型平面携带流反应器,使用激光诱导白炽光法(LII)测量煤粉火焰的碳烟浓度,并研究了激光能量密度F 对测量的影响及火焰中碳烟的分布.研究发现,在F≤0.15,J/cm2 时,煤颗粒信号相对较弱,碳烟信号占主导;在F>0.15,J/cm2时,煤颗粒信号干扰较强.F=0.05~0.08,J/cm2是最优能量密度范围.对本携带流实验系统,碳烟颗粒在距离出口80,mm 处出现,且集中于中心中线4,mm 范围内,碳烟浓度随着高度的增加先增加后降低,并在120,mm 达到峰值.
Abstract:
The soot distribution in a coal jet flame was measured using laser induced incandescence (LII)technique based on a Hencken burner,and the effects of laser fluence(F)on soot measurement in coal flames were investigated.The results show that when F≤0.15 J/cm2,the interference signal from coal particles is minor and the measured LII signal comes from soot particles.When F>0.15,J/cm2,the LII measurement of soot particles is interfered by the LII signal of coal particles.The optimal laser fluence is found to be F=0.05—0.08,J/cm2 in the present study.Soot particles start to appear at around 80,mm above the exit of the coal jet,and they are mainly formed within 4,mm near the centerline.The soot concentration along the centerline increases with h in the upstream and then decreases in the downstream.The maximum soot concentration is found at h=120,mm.

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备注/Memo

备注/Memo:
收稿日期:2017-09-12. 基金项目:国家自然科学基金资助项目(51476088). 作者简介:许开龙(1991— ),男,博士,xklong163@163.com. 通讯作者:张 海,男,博士,教授,haizhang@tsinghua.edu.cn.
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