Opposed flame spread over thick solid fuels under influence of sub-atmospheric pressure and low-velocity flow

doi:10.1016/j.firesaf.2021.103430

IMECH-IR > 微重力重点实验室

	Opposed flame spread over thick solid fuels under influence of sub-atmospheric pressure and low-velocity flow
	Zhu F(朱凤)1 ; Wang SF(王双峰)1,2,3 ; Lu, Zhanbin 4; Wu CJ(吴传嘉)1,3
通讯作者	Wang, Shuangfeng(sfwang@imech.ac.cn)
发表期刊	FIRE SAFETY JOURNAL
	2021-10-01
卷号	125 页码:8
ISSN	0379-7112
摘要	The future generation of inhabited spacecraft will have a significantly different cabin environment from the present ones, characterized by low pressure and elevated oxygen concentration. This new atmosphere and the low-velocity gas flows in microgravity provide distinct conditions for the combustion of the solid materials used, and their influence on material flammability is of particular interest in the fire safety of spacecraft. Experiments have been conducted to investigate the effects of sub-atmospheric pressure and low flow velocity on the opposed flame spread and extinction behaviors over a thick PMMA. A flammability map was constructed that delineates the uniform regime, the flamelet regime, and extinction limits for thick PMMA under sub-atmospheric pressures. The limiting oxygen concentration increases with the reduced ambient pressure at a fixed opposed flow, while the flamelet regime becomes wider. Under low ambient pressure, the flame spread rate increases with the flow velocity, but the increasing rate slows down. At a constant oxygen concentration, the flame spread rate increases with the ambient pressure and gas-phase conduction dominates flame spread. At a constant oxygen partial pressure, the higher ignition temperature and less gas-phase conduction reduce the flame spread rate synchronously with the increased pressure.
关键词	Sub-atmospheric pressure Low-velocity flow Flame spread Solid Flammability
DOI	10.1016/j.firesaf.2021.103430
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000703825100001
关键词[WOS]	DIFFUSION FLAME ; MICROGRAVITY ; COMBUSTION
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Civil ; Materials Science, Multidisciplinary
资助项目	National Natural Science Foundation of China[U1738117] ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences[XDA04020410] ; Opening Fund of State Key Laboratory of Fire Sci-ence (SKLFS)[HZ2021-KF12]
项目资助者	National Natural Science Foundation of China ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Opening Fund of State Key Laboratory of Fire Sci-ence (SKLFS)
论文分区	二类
力学所作者排名	1
RpAuthor	Wang, Shuangfeng
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/87529
专题	微重力重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China; 2.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.Shanghai Univ, Inst Appl Math & Mech, Shanghai 200072, Peoples R China
推荐引用方式 GB/T 7714	Zhu F,Wang SF,Lu, Zhanbin,et al. Opposed flame spread over thick solid fuels under influence of sub-atmospheric pressure and low-velocity flow[J]. FIRE SAFETY JOURNAL,2021,125:8.
APA	朱凤,王双峰,Lu, Zhanbin,&吴传嘉.(2021).Opposed flame spread over thick solid fuels under influence of sub-atmospheric pressure and low-velocity flow.FIRE SAFETY JOURNAL,125,8.
MLA	朱凤,et al."Opposed flame spread over thick solid fuels under influence of sub-atmospheric pressure and low-velocity flow".FIRE SAFETY JOURNAL 125(2021):8.

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