微喷管氢气非预混射流火焰燃烧特性
Combustion characteristic of hydrogen non-premixed micro-jet flames
查看参考文献24篇
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文摘
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采用考虑详细化学反应机理的数值计算,对空气伴流中微圆管氢气非预混射流火焰进行了研究。不同流速下火焰OH基元分布数值计算与实验结果吻合较好。结果表明:当微圆管内径保持不变时,随着燃料速度减小,火焰最高温度逐渐降低。当燃料速度接近熄灭极限速度时,火焰最高温度开始急剧下降;微圆管氢气非预混射流火焰存在最小流速对应的熄灭极限;随着管壁材料热导率降低,火焰中心轴线上的最高温度逐渐升高,喷口处壁面温度也升高;管壁材料热导率对火焰熄灭极限速度影响不显著。 |
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其他语种文摘
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Non-premixed hydrogen micro-jet flames in co-flow airs were studied by numerical computations with a detailed chemical reaction mechanism. The results of numerical computations agreed reasonably well with the counterparts of the experiments. The results showed that the computed maximum flame temperature decreased with decreasing fuel injection velocity for a fixed micro tube. When the fuel injection velocity was close to the minimum flow velocity sustaining a flame, the computed maximum flame temperature decreased sharply with decreasing fuel velocity. The wall materials had an influence on flame structures at a low fuel velocity. The lower the thermal conductivity of materials, the higher the wall temperature near the nozzle exit. The maximum flame temperature on the axis was relative higher. However, the effect of thermal conductivity on the quenching velocity of flame was not remarkable. |
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来源
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化工学报
,2016,67(7):2724-2731 【核心库】
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DOI
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10.11949/j.issn.0438-1157.20160119
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关键词
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微喷管非预混火焰
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氢
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热传导
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熄灭极限
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数值模拟
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地址
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中国科学院广州能源研究所, 中国科学院可再生能源重点实验室, 广东, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0438-1157 |
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学科
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能源与动力工程 |
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基金
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国家自然科学基金项目
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国家973计划
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广东省科技厅国际合作项目
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文献收藏号
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CSCD:5752290
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参考文献 共
24
共2页
|
|
1.
Ju Y G. Microscale combustion: Technology development and fundamental research.
Progress in Energy and Combustion Science,2011,37(6):669-715
|
被引
38
次
|
|
|
|
|
2.
Maruta K. Micro and mesoscale combustion.
Proceedings of the Combustion Institute,2011,33(1):125-150
|
被引
39
次
|
|
|
|
|
3.
Li X. Study on flame responses and ignition characteristics of CH_4/O_2/CO_2 mixture in a micro flow reactor with a controlled temperature profile.
Applied Thermal Engineering,2015,84:360-367
|
被引
4
次
|
|
|
|
|
4.
Yang W M. Development of micro-thermophotovoltaic power generator with heat recuperation.
Energy Conversion and Management,2014,78(2):81-87
|
被引
4
次
|
|
|
|
|
5.
Zamashchikov V V. Combustion of gases in thin-walled small diameter tubes.
Combustion Explosion and Shock Waves,1995,31(1):20-22
|
被引
2
次
|
|
|
|
|
6.
Kim N I. Development and scale effects of small Swiss-roll combustors.
Proceeding of the Combustion Institute,2007,31(2):3243-3250
|
被引
11
次
|
|
|
|
|
7.
Jiang L Q. Development of a self-thermal insulation miniature combustor.
Energy Conversion and Management,2009,50(5):1308-1313
|
被引
14
次
|
|
|
|
|
8.
冯耀勋. 多孔介质表面火焰最小稳燃空间实验研究.
中国电机工程学报,2011,31(20):46-51
|
被引
4
次
|
|
|
|
|
9.
Li J W. Experimental investigation on heat loss and combustion in methane/oxygen micro-tube combustor.
Applied Thermal Engineering,2008,28(7):707-716
|
被引
9
次
|
|
|
|
|
10.
李伟军. 微细直管燃烧器的散热损失研究.
中国电机工程学报,2007,27(20):60-64
|
被引
1
次
|
|
|
|
|
11.
Wan J L. A numerical investigation on combustion characteristics of H_2/air mixture in a micro-combustor with wall cavities.
International Journal of Hydrogen Energy,2014,39(15):8138-8146
|
被引
7
次
|
|
|
|
|
12.
Wan J L. Experimental and numerical investigation on combustion characteristics of premixed hydrogen/air flame in a micro-combustor with a bluff body.
International Journal of Hydrogen Energy,2012,37(24):19190-19197
|
被引
13
次
|
|
|
|
|
13.
万建龙. 微小型凹腔燃烧器内甲烷/空气预混火焰特性.
化工学报,2014,65(9):3418-3424
|
被引
4
次
|
|
|
|
|
14.
潘剑锋. 微热光电系统燃烧室内截面突变对燃烧的影响.
农业机械学报,2007,38(3):44-46
|
被引
4
次
|
|
|
|
|
15.
邓尘. 微型缩放喷管中氢气/空气预混燃烧实验研究.
中国电机工程学报,2014,34(2):260-264
|
被引
3
次
|
|
|
|
|
16.
张力. 微型燃烧器内甲烷预混催化燃烧的数值研究.
化工学报,2009,60(3):627-633
|
被引
16
次
|
|
|
|
|
17.
赵黛青. 喷管直径对微尺度扩散火焰特性的影响.
工程热物理学报,2008,29(11):1957-1960
|
被引
1
次
|
|
|
|
|
18.
赵黛青. 微尺度甲烷扩散火焰特性的数值解析.
燃烧科学与技术,2005,11(6):531-534
|
被引
1
次
|
|
|
|
|
19.
Cheng T S. Detailed measurement and assessment of laminar hydrogen jet diffusion flames.
Combustion and Flame,2006,146(1):268-282
|
被引
1
次
|
|
|
|
|
20.
Nakamura Y. A numerical study on extinction behavior of laminar micro diffusion flames.
Combustion Theory and Modelling,2006,10(6):927-938
|
被引
6
次
|
|
|
|
|
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