| Flame Extinction of Spherical PMMA in Microgravity: Effect of Fuel Diameter and Conduction | |
Wu CJ(吴传嘉)1,2 ; Sun PY3; Wang XZ(王秀珍)1,2; Huang XY3; Wang SF(王双峰)1,2
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| Corresponding Author | Huang, Xinyan([email protected]) ; Wang, Shuangfeng([email protected]) |
| Source Publication | MICROGRAVITY SCIENCE AND TECHNOLOGY
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| 2020-09-28 | |
| Pages | 11 |
| ISSN | 0938-0108 |
| Abstract | A series of experiments were conducted in the 3.6-s microgravity drop tower and normal gravity to investigate the effect of solid fuel curvature, conduction, and reradiation on the flame extinction of spherical polymethyl methacrylate (PMMA). In the semi-quiescent microgravity environment, flame extinction was observed if the PMMA diameter was larger than 40 mm, because of a smaller flame conductive heating in larger diameter (i.e., the curvature effect). Compared to the droplet combustion with a low evaporation point and fast heat convection in the liquid phase, the solid fuel has a high pyrolysis point and large transient heat conduction. Thus, the large surface reradiation effectively cools down the fuel surface to promote extinction. Also, as the initial burning duration increases, the conductive cooling into the solid fuel decreases, which delays or prevents the flame extinction in microgravity. The extinction criterion for microgravity flame is explained by the critical mass flux and mass-transfer number. This work helps to understand the curvature effect of solid fuel on flame extinction and the material fire safety in the microgravity spacecraft environment. |
| Keyword | Spacecraft fire Plastic fuel Drop tower Curvature effect Heat conduction |
| DOI | 10.1007/s12217-020-09829-5 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000573478300001 |
| WOS Keyword | SPREAD ; COMBUSTION ; PROPAGATION ; TRANSITION ; RADIATION ; QUIESCENT ; GRAVITY ; LIMIT |
| WOS Research Area | Engineering ; Thermodynamics ; Mechanics |
| WOS Subject | Engineering, Aerospace ; Thermodynamics ; Mechanics |
| Funding Project | National Natural Science Foundation of China[U1738117] ; National Natural Science Foundation of China[51876183] ; Strategic Priority Research Program on Space Science, the Chinese Academy of Sciences[XDA04020410] ; Strategic Priority Research Program on Space Science, the Chinese Academy of Sciences[XDA04020202-10] |
| Funding Organization | National Natural Science Foundation of China ; Strategic Priority Research Program on Space Science, the Chinese Academy of Sciences |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Huang, Xinyan ; Wang, Shuangfeng |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/85286 |
| Collection | 微重力重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China; 3.Hong Kong Polytech Univ, Dept Bldg Serv Engn, Res Ctr Fire Engn, Hong Kong, Peoples R China |
| Recommended Citation GB/T 7714 | Wu CJ,Sun PY,Wang XZ,et al. Flame Extinction of Spherical PMMA in Microgravity: Effect of Fuel Diameter and Conduction[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2020:11.Rp_Au:Huang, Xinyan, Wang, Shuangfeng |
| APA | 吴传嘉,Sun PY,王秀珍,Huang XY,&王双峰.(2020).Flame Extinction of Spherical PMMA in Microgravity: Effect of Fuel Diameter and Conduction.MICROGRAVITY SCIENCE AND TECHNOLOGY,11. |
| MLA | 吴传嘉,et al."Flame Extinction of Spherical PMMA in Microgravity: Effect of Fuel Diameter and Conduction".MICROGRAVITY SCIENCE AND TECHNOLOGY (2020):11. |
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| File Name/Size | DocType | Version | Access | License | ||
| Jp2020333.pdf（1591KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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