Knowledge Management System of Institue of Mechanics, CAS
| 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.
| |
| Source Publication | Microgravity Science And Technology
 |
| 2008 | |
| Pages | 99-105 |
| ISSN | 0938-0108 |
| Abstract | 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. |
| Keyword | Smoldering Combustion Microgravity Polyurethane Foam Natural-convection Propagation Flow |
| DOI | 10.1007/s12217-008-9014-7 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000260252100007 |
| WOS Keyword | NATURAL-CONVECTION ; PROPAGATION ; FLOW |
| WOS Research Area | Engineering ; Thermodynamics ; Mechanics |
| WOS Subject | Engineering, Aerospace ; Thermodynamics ; Mechanics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/25858 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Wang, SF (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China. |
| Recommended Citation 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. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp139.pdf（211KB） | 开放获取 | -- | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment