The impact of channel gap distance on flame splitting limit of H-2/air mixture in microchannels with wall cavities
文献类型：期刊论文
| 作者 | Wan, Jianlong1; Fan, Aiwu1; Yao, Hong1; Liu, Wei1; Gou, Xiaolong2; Zhao, Daiqing3 |
| 刊名 | international journal of hydrogen energy
 |
| 出版日期 | 2014-07-15 |
| 卷号 | 39期号:21页码:11308-11315 |
| 关键词 | Micro-combustion Wall cavity Flame splitting Reaction zone Flow acceleration Boundary layer |
| 英文摘要 | we recently confirmed the "tip open phenomenon" of lean h-2/air flame in a microchannel with cavities. the critical inlet velocity when fuel conversion ratio drops to 80% was defined as "flame splitting limit". in the present work, we numerically studied the impact of channel gap distance. results showed that corresponding limits for 1.0-mm, 0.8-mm and 0.6-mm channels are 26 m/s, 33 m/s and 16 m/s respectively, exhibiting a non-monotonic dependence. the analysis reveals that when the gap distance is decreased from 1.0 mm to 0.8 mm, the proportion of fuel that involved into the cavities is increased, flame length is reduced simultaneously, and better preheating of the fresh mixture is attained. these positive effects lead to an increase in flame splitting limit. as the gap distance is further reduced to 0.6 mm, the excessive stretch effect results in complete extinction of downstream flame, causing a decrease of the splitting limit. copyright (c) 2014, hydrogen energy publications, llc. published by elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; electrochemistry ; energy & fuels |
| 研究领域[WOS] | chemistry ; electrochemistry ; energy & fuels |
| 关键词[WOS] | combustion characteristics ; micro-combustor ; bluff-body ; hydrogen/air flame ; stabilization ; generation ; dynamics ; flows ; ducts |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000339039500052 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/10694]  |
| 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.Chongqing Univ, Sch Power Engn, Chongqing 400044, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wan, Jianlong,Fan, Aiwu,Yao, Hong,et al. The impact of channel gap distance on flame splitting limit of H-2/air mixture in microchannels with wall cavities[J]. international journal of hydrogen energy,2014,39(21):11308-11315. |
| APA | Wan, Jianlong,Fan, Aiwu,Yao, Hong,Liu, Wei,Gou, Xiaolong,&Zhao, Daiqing.(2014).The impact of channel gap distance on flame splitting limit of H-2/air mixture in microchannels with wall cavities.international journal of hydrogen energy,39(21),11308-11315. |
| MLA | Wan, Jianlong,et al."The impact of channel gap distance on flame splitting limit of H-2/air mixture in microchannels with wall cavities".international journal of hydrogen energy 39.21(2014):11308-11315. |
入库方式： OAI收割
来源：广州能源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。