Near limit premixed flamelets in Hele-Shaw cells
文献类型：期刊论文
| 作者 | Chen XT; Lu ZB; Wang SF(王双峰)
|
| 刊名 | PROCEEDINGS OF THE COMBUSTION INSTITUTE
 |
| 出版日期 | 2017 |
| 卷号 | 36期号:1页码:1585-1593 |
| 关键词 | Premixed flame Flame cylinder Hele-Shaw cell Near limit Narrow channel |
| ISSN号 | 1540-7489 |
| 中文摘要 | In this paper we report a preliminary attempt to stabilize near limit premixed flamelets in Hele-Shaw cells. As a quasi-two-dimensional analog of flame balls the flamelet is sustained by diffusive transport alone with fuel supplied from the open ends of the Hele-Shaw cell and heat dissipated to the ambient environment through conduction; radiative heat losses from both phases are neglected. Following Spalding's "one-dimensional idealization" approximation we construct a 2-D model to account for the heat and mass transfer processes in both the gas and the solid phases with the gap height as a parameter controlling the heat exchange rate between the two phases. For each of the three kinds of wall materials considered two steady solution branches are obtained as a function of the gap height one corresponding to large flames and the other to small flames. The large flame branch is critically dependent on the boundary and is therefore of little physical value. Linear stability analysis shows that the small flame branch is unstable to random perturbations. 2-D time dependent numerical simulations indicate that a slightly perturbed steady state on the small flame branch either evolves into a single flamelet drifting to the boundary as a whole or splits into two drifting to the boundary along opposite directions. A partially open square Hele-Shaw combustor has been proposed and is shown to be able to support stabilized flamelets for a certain range of the degree of opening. (C) 2016 by The Combustion Institute. Published by Elsevier Inc. |
| 类目[WOS] | Thermodynamics ; Energy & Fuels ; Engineering, Chemical ; Engineering, Mechanical |
| 研究领域[WOS] | Thermodynamics ; Energy & Fuels ; Engineering |
| 关键词[WOS] | COMBUSTION ; STABILITY ; BALLS ; LOSSES ; NUMBER ; MICRO |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000397464200163 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/60601]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 推荐引用方式 GB/T 7714 | Chen XT,Lu ZB,Wang SF. Near limit premixed flamelets in Hele-Shaw cells[J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE,2017,36(1):1585-1593. |
| APA | Chen XT,Lu ZB,&王双峰.(2017).Near limit premixed flamelets in Hele-Shaw cells.PROCEEDINGS OF THE COMBUSTION INSTITUTE,36(1),1585-1593. |
| MLA | Chen XT,et al."Near limit premixed flamelets in Hele-Shaw cells".PROCEEDINGS OF THE COMBUSTION INSTITUTE 36.1(2017):1585-1593. |
入库方式： OAI收割
来源：力学研究所
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。