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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
Source PublicationCombustion and Flame
2011
Volume158Issue:6Pages:1193-1200
ISSN0010-2180
AbstractThe 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.
KeywordOpposed-flow Flame Spread Three-dimensional Effect Thin Solid Material Narrow-channel Microgravity Model
Subject AreaThermodynamics ; Energy & Fuels ; Engineering
DOI10.1016/j.combustflame.2010.10.004
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000289821800019
WOS KeywordMICROGRAVITY ; MODEL
WOS Research AreaThermodynamics ; Energy & Fuels ; Engineering
WOS SubjectThermodynamics ; Energy & Fuels ; Engineering, Multidisciplinary ; Engineering, Chemical ; Engineering, Mechanical
Funding OrganizationThe 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).
DepartmentNML复杂流体
Classification一类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/45083
Collection国家微重力实验室
Corresponding AuthorZhang, 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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