Microgravity Smoldering Combustion Of Flexible Polyurethane Foam With Central Ignition

doi:10.1007/s12217-008-9014-7

IMECH-IR > 力学所知识产出(1956-2008)

	Microgravity Smoldering Combustion Of Flexible Polyurethane Foam With Central Ignition
	Wang SF(王双峰); Zhang X(张夏); Wang, SF (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China.
发表期刊	Microgravity Science And Technology
	2008
页码	99-105
ISSN	0938-0108
摘要	Smoldering constitutes a significant fire risk both in normal gravity and in microgravity. This space experiment has been conducted aboard the China Recoverable Satellite SJ-8 to investigate smoldering characteristics of flexible polyurethane foam with central ignition in a forced flow of oxidizer. This configuration resulted in a combination of opposed and forward flow smolder. The microgravity experiment is rather unique in that it was performed at constant pressure, and with a relatively high ambient oxygen concentration (35% by volume). The smoldering characteristics are inferred from measurements of temperature histories at several locations along the foam sample. Particularly important is the discovery that there is a transition from smoldering to flaming near the sample end in the opposed smoldering. This transition seems to be caused by strong acceleration of the smoldering reaction. The observed transition serves to initiate a vigorous forward-propagating oxidation reaction in the char left behind by the smoldering reaction. The secondary char oxidation reaction propagates through the sample and consumes most of the remaining char. In forward flow smoldering, the oxidizer depletion by the upstream opposed smolder prevents an exothermic oxidation reaction from being established in the foam until this preceding reaction is completed. Once fresh oxidizer flows in the sample, the existing conditions are sufficient for a self-sustained forward smoldering reaction to take place.
关键词	Smoldering Combustion Microgravity Polyurethane Foam Natural-convection Propagation Flow
DOI	10.1007/s12217-008-9014-7
收录类别	SCI
语种	英语
WOS记录号	WOS:000260252100007
关键词[WOS]	NATURAL-CONVECTION ; PROPAGATION ; FLOW
WOS研究方向	Engineering ; Thermodynamics ; Mechanics
WOS类目	Engineering, Aerospace ; Thermodynamics ; Mechanics
引用统计	被引频次：8[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/311007/25858
专题	力学所知识产出(1956-2008)
通讯作者	Wang, SF (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Wang SF,Zhang X,Wang, SF . Microgravity Smoldering Combustion Of Flexible Polyurethane Foam With Central Ignition[J]. Microgravity Science And Technology,2008:99-105.
APA	王双峰,张夏,&Wang, SF .(2008).Microgravity Smoldering Combustion Of Flexible Polyurethane Foam With Central Ignition.Microgravity Science And Technology,99-105.
MLA	王双峰,et al."Microgravity Smoldering Combustion Of Flexible Polyurethane Foam With Central Ignition".Microgravity Science And Technology (2008):99-105.

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