Influence of air-gap and thickness on the upward flame spread over discrete wood chips

doi:10.1016/j.tsep.2021.101106

	Influence of air-gap and thickness on the upward flame spread over discrete wood chips
	Zhou, Biao 4; Wang, Kai 4; Xu, Min 4; Yang, Wangyu 4; Zhu F(朱凤)3; Sun, Biao 2; Wang, Xuan 1; Ke, Wei 4
刊名	THERMAL SCIENCE AND ENGINEERING PROGRESS
	2021-12-01
卷号	26 页码:8
关键词	Wooden culture heritage Wooden historic building Discrete fuels Air-gap Flame spread rate Mass loss rate
ISSN号	2451-9049
DOI	10.1016/j.tsep.2021.101106
通讯作者	Wang, Kai(kaiwang@cumtb.edu.cn)
英文摘要	The fire hazard has frequently destroyed wooden cultural heritages. The discrete wood chips allow fire propagation quickly in practice. This study aims to clarify the effect of air-gap and thickness of wood chips in the fire propagation mechanism by experimental investigating the mass loss rate (MLR), flame spread rate (FSR), total burning duration (TBD) and the flame characteristic length (MFL). The 2 cm long and 10 cm wide wood chips were uniformly installed on a vertical sample holder. The air-gap distance and the thickness of wood chips changed from 1.0 cm to 3.0 cm and 1 mm to 4 mm, respectively. The flame spreads across with the wood grain orientation. The experimental result shows that FSR and MFL are sensitive to the air-gap distance. It is concluded that, TBD versus thickness of the sample is linear with an equation TBD (s) = 7.7 x thickness (mm) + 18.6. Concerning the fixed thickness of the sample, the TBD varies a little from the air-gap distance. The MFL increases to a peak then decreases to a low value as the thickness differing from 1 mm to 4 mm. It is observed that the air-gap makes little contribution to the TBD. The MLF history as the air-gap distance changing from 1.0 cm to 3.0 cm indicates that the distance of air-gap imposed little effect on the MFL. The a-MLR profiles mainly depend on the thickness of the sample.
资助项目	Fundamental Research Funds for the Central Universities[2020XJAQ03] ; Natural Science Foundation of Zhejiang Province[LQ21E080006]
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
语种	英语
WOS记录号	WOS:000710825100004
资助机构	Fundamental Research Funds for the Central Universities ; Natural Science Foundation of Zhejiang Province
其他责任者	Wang, Kai
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/88028]
专题	力学研究所_国家微重力实验室
作者单位	1.Ningbo Univ, Sch Civil & Environm Engn, Ningbo 315200, Peoples R China 2.Southwest Jiaotong Univ, Sch Comp & Artificial Intelligence, Chengdu 610031, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China; 4.China Univ Min & Technol Beijing, Sch Emergency Management & Safety Engn, Beijing 100083, Peoples R China;
推荐引用方式 GB/T 7714	Zhou, Biao,Wang, Kai,Xu, Min,et al. Influence of air-gap and thickness on the upward flame spread over discrete wood chips[J]. THERMAL SCIENCE AND ENGINEERING PROGRESS,2021,26:8.
APA	Zhou, Biao.,Wang, Kai.,Xu, Min.,Yang, Wangyu.,朱凤.,...&Ke, Wei.(2021).Influence of air-gap and thickness on the upward flame spread over discrete wood chips.THERMAL SCIENCE AND ENGINEERING PROGRESS,26,8.
MLA	Zhou, Biao,et al."Influence of air-gap and thickness on the upward flame spread over discrete wood chips".THERMAL SCIENCE AND ENGINEERING PROGRESS 26(2021):8.