Flame Spread over Polyethylene Film: Effects of Gravity and Fuel Inclination

doi:10.1007/s12217-022-09945-4

	Flame Spread over Polyethylene Film: Effects of Gravity and Fuel Inclination
	Zhu, Feng 4; Huang, Xinyan 3; Wang, Shuangfeng 1,2,4
刊名	MICROGRAVITY SCIENCE AND TECHNOLOGY
	2022-04-23
卷号	34 期号:3 页码:14
关键词	Microgravity combustion PE Inclination angle Flame spread Extinction
ISSN号	0938-0108
DOI	10.1007/s12217-022-09945-4
通讯作者	Huang, Xinyan(xy.huang@polyu.edu.hk) ; Wang, Shuangfeng(sfwang@imech.ac.cn)
英文摘要	The flammable thermoplastics are widely used in our daily life and manned space travels in microgravity, posing a potential fire risk. This work studies the flame spread along with the thin polyethylene (PE) film (15-100 mu m) in the microgravity drop tower and normal gravity. Microgravity flame spread faster than vertically downward flame spread in normal gravity due to the weak buoyancy flow and greater flame preheating length. For the ultra-thin film, the influence of melting on the opposed flame spread is negligible. The upward flame spread rate reaches a maximum constant (45 +/- 10 mm/s for 20 mu m film) when the inclination angle is larger than 30 degrees, due to the dripping removal of molten fuel. The upward flame spread rate changes under the competition between the enhanced flame heating by buoyancy and the dripping removal of the molten fuel. The vertically upward spreading flame cannot be maintained due to the dripping removal of the molten fuel, and a critical extinction condition was determined and analyzed. This work provides valuable data on flame dynamics in plastic films and can help develop more sophisticated material flammability tests for fire safety in space travel.
资助项目	National Key R&D Program of China[2021YFA0716203] ; Opening Fund of State Key Laboratory of Fire Science (SKLFS)[HZ2021KF12] ; National Natural Science Foundation of China[U1738117]
WOS关键词	OXYGEN CONCENTRATION ; WIRE INSULATION ; ELECTRIC WIRE ; MICROGRAVITY ; FLOW ; COMBUSTION ; ORIENTATION ; EXTINCTION ; VELOCITY
WOS研究方向	Engineering ; Thermodynamics ; Mechanics
语种	英语
WOS记录号	WOS:000786689400001
资助机构	National Key R&D Program of China ; Opening Fund of State Key Laboratory of Fire Science (SKLFS) ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/88982]
专题	力学研究所_国家微重力实验室
通讯作者	Huang, Xinyan; Wang, Shuangfeng
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China 3.Hong Kong Polytech Univ, Res Ctr Fire Safety Engn, Dept Bldg & Environm Engn, Hong Kong, Peoples R China 4.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Feng,Huang, Xinyan,Wang, Shuangfeng. Flame Spread over Polyethylene Film: Effects of Gravity and Fuel Inclination[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2022,34(3):14.
APA	Zhu, Feng,Huang, Xinyan,&Wang, Shuangfeng.(2022).Flame Spread over Polyethylene Film: Effects of Gravity and Fuel Inclination.MICROGRAVITY SCIENCE AND TECHNOLOGY,34(3),14.
MLA	Zhu, Feng,et al."Flame Spread over Polyethylene Film: Effects of Gravity and Fuel Inclination".MICROGRAVITY SCIENCE AND TECHNOLOGY 34.3(2022):14.