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A numerical investigation on combustion characteristics of H-2/air mixture in a microcombustor with wall cavities
Wan, Jianlong1; Yang, Wei1; Fan, Aiwu1; Liu, Yi1; Yao, Hong1; Liu, Wei1; Du, Yiqing1; Zhao, Daiqing2
2014-05-15
发表期刊INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷号39期号:15页码:8138-8146
摘要Combustion characteristics of H-2/air mixture in a micro-combustor with wall cavities were investigated numerically. The effects of inlet velocity, equivalence ratio, and the length-depth ratio of the cavity were studied. The results show that at a high enough velocity the flame splits in the middle which leads to a large amount of fuel leakage and a sharp decrease in the conversion rate of hydrogen. Meanwhile, the flame splits at the inner wall which gives rise to two high temperature regions and double temperature peaks at outer wall. Moreover, the flame-splitting limit is extended at a higher equivalence ratio due to a more intensive reaction. Furthermore, the flame-splitting limit increases for a larger length-depth ratio of the cavity, whereas the wall temperature level decreases. Therefore, excessive large length-depth. ratios are not beneficial for this type of micro-combustors if the combustor walls are used as heat sources of thermoelectric or thermal photovoltaic devices. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
文章类型Article
关键词Micro Combustion Cavity Length-depth Ratio Flame-splitting Limit Recirculation Zone
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.ijhydene.2014.03.116
研究领域[WOS]Chemistry ; Electrochemistry ; Energy & Fuels
关键词[WOS]MICRO-COMBUSTOR ; FLAME STABILIZATION ; BLUFF-BODY ; HYDROGEN/AIR FLAME ; HIGH-TEMPERATURE ; AIR ; DYNAMICS ; CHANNEL ; MICROCHANNELS ; SIMULATION
收录类别SCI
语种英语
WOS类目Chemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS记录号WOS:000336338500056
引用统计
被引频次:40[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10701
专题中国科学院广州能源研究所
作者单位1.Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
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Wan, Jianlong,Yang, Wei,Fan, Aiwu,et al. A numerical investigation on combustion characteristics of H-2/air mixture in a microcombustor with wall cavities[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2014,39(15):8138-8146.
APA Wan, Jianlong.,Yang, Wei.,Fan, Aiwu.,Liu, Yi.,Yao, Hong.,...&Zhao, Daiqing.(2014).A numerical investigation on combustion characteristics of H-2/air mixture in a microcombustor with wall cavities.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,39(15),8138-8146.
MLA Wan, Jianlong,et al."A numerical investigation on combustion characteristics of H-2/air mixture in a microcombustor with wall cavities".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39.15(2014):8138-8146.
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