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[1]亢银虎,等. 一种新型的预测射流扩散火焰长度、直径和体积的方法[J].燃烧科学与技术,2017,(02):185-191.[doi:DOI 10.11715/rskxjs.R201603050]
 Kang Yinhu,Lu Xiaofeng,et al. A New Method for Predicting the Length,Width and Volumeof the Jet Diffusion Flame[J].Journal of Combustion Science and Technology,2017,(02):185-191.[doi:DOI 10.11715/rskxjs.R201603050]
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 一种新型的预测射流扩散火焰长度、直径和体积的方法()
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《燃烧科学与技术》[ISSN:1006-8740/CN:12-1240/TK]

卷:
期数:
2017年02
页码:
185-191
栏目:
出版日期:
2017-04-15

文章信息/Info

Title:
 A New Method for Predicting the Length,Width and Volume
of the Jet Diffusion Flame
作者:
 亢银虎1 2卢啸风3黄小美1 2彭世尼1 2阳 东1 2
 1. 重庆大学三峡库区生态环境教育部重点实验室,重庆 400045;2. 重庆大学城市建设与环境工程学院,
重庆 400045;3. 重庆大学低品位能源利用技术及系统教育部重点实验室,重庆 400044
Author(s):
 Kang Yinhu1 2Lu Xiaofeng3Huang Xiaomei1 2Peng Shini1 2Yang Dong1 2
 1. Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment,Ministry of Education,
Chongqing University,Chongqing 400045,China;2.School of Urban Construction and
Environmental Engineering,Chongqing University,Chongqing 400045,China;
3.Key Laboratory of Low-Grade Energy Utilization Technologies and Systems,
Ministry of Education,Chongqing University,Chongqing 400044,China
关键词:
 射流扩散火焰几何尺寸射流雷诺数流动状态解析解
Keywords:
 jet diffusion flamephysical dimensionjet Reynolds numberfluid regimeanalytical solution
分类号:
TK16
DOI:
DOI 10.11715/rskxjs.R201603050
文献标志码:
A
摘要:
 对二甲醚、天然气、LPG 射流扩散火焰的长度、直径及体积特性进行试验和理论研究,并探究了喷嘴内
径df对火焰流动状态的影响.结果表明,随df的增加,火焰过渡区及吹熄极限对应的射流雷诺数Ref逐渐增加,
而相应的射流速度uf 逐渐降低.对每种燃料,其层流无量纲火焰长度与Ref 呈正比,湍流无量纲火焰长度为定
值;在层流和湍流状态下,火焰直径恒定,但在过渡区,火焰直径快速增加.据此,本文提出一种新型、预测精
度更高的射流扩散火焰几何尺寸的关联式,并拟合出二甲醚、天然气、LPG 火焰的无量纲长度、直径及体积的经
验关联式.
Abstract:
 In this paper,the length,width,and volume behavior of DME,natural gas and LPG jet diffusion
flames were experimentally and theoretically studied.A series of fuel nozzles with different internal diameters df
were involved presently to investigate its effect on the flame behavior.The results show that with the increase of
df,the transitional and bow-out Ref increase,and the corresponding uf decreases gradually.For each fuel,the
laminar dimensionless flame length is proportional to Ref,while the turbulent one remains unchanged.Besides,
the dimensionless flame width remains unchanged at laminar and turbulent regimes,but it increases quickly at the
transitional stage.Accordingly,new forms of correlation with higher prediction accuracy were developed to correlate
the dimensionless length,width and volume of DME,natural gas and LPG jet diffusion flames with Ref.

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备注/Memo

备注/Memo:
 收稿日期:2016-01-07.
基金项目:中央高校基本科研业务费专项资金资助项目(106112015CDJRC211103).
作者简介:亢银虎(1985— ),男,博士,讲师.
通讯作者:亢银虎,cqukangyh@cqu.edu.cn.
更新日期/Last Update: