Microgravity Smoldering Combustion Of Flexible Polyurethane Foam With Central Ignition
文献类型：期刊论文
| 作者 | Wang SF(王双峰) ; Zhang X(张夏)
|
| 刊名 | Microgravity Science And Technology
 |
| 出版日期 | 2008 |
| 页码 | 99-105 |
| 通讯作者邮箱 | sfwang@imech.ac.cn |
| 关键词 | Smoldering Combustion Microgravity Polyurethane Foam Natural-Convection Propagation Flow |
| ISSN号 | 0938-0108 |
| 通讯作者 | Wang, SF (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China. |
| 中文摘要 | 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. |
| 类目[WOS] | Engineering, Aerospace ; Thermodynamics ; Mechanics |
| 研究领域[WOS] | Engineering ; Thermodynamics ; Mechanics |
| 关键词[WOS] | NATURAL-CONVECTION ; PROPAGATION ; FLOW |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000260252100007 |
| 公开日期 | 2009-08-03 ; 2009-09-14 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/25858]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Wang SF,Zhang X. Microgravity Smoldering Combustion Of Flexible Polyurethane Foam With Central Ignition[J]. Microgravity Science And Technology,2008:99-105. |
| APA | 王双峰,&张夏.(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. |
入库方式： OAI收割
来源：力学研究所
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