| Experimental studies on the three-dimensional effects of opposed-flow flame spread over thin solid materials | |
Zhang X(张夏) ; Yu Y(于泳); Zhang, X (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Key Lab Micrograv, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China, Peoples R China
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| Source Publication | Combustion and Flame
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| 2011 | |
| Volume | 158Issue:6Pages:1193-1200 |
| ISSN | 0010-2180 |
| Abstract | The three-dimensional effects of flame spread over thin solid materials were experimentally studied using a natural-convection-suppressing horizontal narrow-channel. In a sufficiently wide narrow-channel, the variation of flame spread against the width of the material sample showed different trends for different gas flow speeds and oxygen concentrations. The extent of three-dimensional effects was inversely proportional to the gas flow speed or its square. Near quenching extinction limits, the effects were significant because weak combustion is sensitive to a slight variation of heat loss and oxygen concentration. The effects may be due to different factors such as side heat loss, side oxygen diffusion, or both. Far away from quenching extinction limits, the effects were weak because vigorous combustion is insensitive to a small variation of oxygen concentration and heat loss. In all tests, the effects were limited to the samples of width less than 10 times of the diffusion length. Moreover, a higher oxygen concentration suppressed the effects at a lower gas flow speed. For sufficiently wide samples, in the most range of gas flow speeds, the channel width had almost no effect on flame spread. However, near extinction limits, the flame spread rate decreased with the increasing channel width. (C) 2010 The Combustion Institute. Published by Elsevier Inc. All rights reserved. |
| Keyword | Opposed-flow Flame Spread Three-dimensional Effect Thin Solid Material Narrow-channel Microgravity Model |
| Subject Area | Thermodynamics ; Energy & Fuels ; Engineering |
| DOI | 10.1016/j.combustflame.2010.10.004 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000289821800019 |
| WOS Keyword | MICROGRAVITY ; MODEL |
| WOS Research Area | Thermodynamics ; Energy & Fuels ; Engineering |
| WOS Subject | Thermodynamics ; Energy & Fuels ; Engineering, Multidisciplinary ; Engineering, Chemical ; Engineering, Mechanical |
| Funding Organization | The author thanks Prof. Wenrui Hu of Institute of Mechanics, Chinese Academy of Sciences for his invaluable advice. This work was supported by Chinese Academy of Sciences (CAS) Innovation Program and National Science Foundation of China (NSFC Grant No. 10702009). |
| Department | NML复杂流体 |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/45083 |
| Collection | 微重力重点实验室 |
| Corresponding Author | Zhang, X (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Key Lab Micrograv, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang X,Yu Y,Zhang, X . Experimental studies on the three-dimensional effects of opposed-flow flame spread over thin solid materials[J]. Combustion and Flame,2011,158,6,:1193-1200. |
| APA | 张夏,于泳,&Zhang, X .(2011).Experimental studies on the three-dimensional effects of opposed-flow flame spread over thin solid materials.Combustion and Flame,158(6),1193-1200. |
| MLA | 张夏,et al."Experimental studies on the three-dimensional effects of opposed-flow flame spread over thin solid materials".Combustion and Flame 158.6(2011):1193-1200. |
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