Flame characteristic and ceiling temperature distribution under the effect of curved sidewall

Flame characteristic and ceiling temperature distribution under the effect of curved sidewall

This experimental study focused on fire source combustion characteristics and the distribution law of fire temperature field in the utility tunnel caused by side wall constraint effect. The oil pans are placed at 0 m, 0.15 m, 0.3 m, 0.45 m from the side wall and the center of the model to study the...

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Main Authors: Zhen-huan Liang, Guo-qing Zhu, Hao-nan Liu, Xiang Zhou
Format: Article
Language:English
Published: Elsevier 2019-09-01
Series:Case Studies in Thermal Engineering
Online Access:http://www.sciencedirect.com/science/article/pii/S2214157X19301145
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spelling doaj-f1486d44a32b4856a834e8fc3640ac962020-11-25T01:54:35ZengElsevierCase Studies in Thermal Engineering2214-157X2019-09-0114Flame characteristic and ceiling temperature distribution under the effect of curved sidewallZhen-huan Liang0Guo-qing Zhu1Hao-nan Liu2Xiang Zhou3Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China; Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, China; Corresponding author. Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China.Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China; Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, ChinaJiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China; Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, ChinaJiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China; Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, ChinaThis experimental study focused on fire source combustion characteristics and the distribution law of fire temperature field in the utility tunnel caused by side wall constraint effect. The oil pans are placed at 0 m, 0.15 m, 0.3 m, 0.45 m from the side wall and the center of the model to study the influence of the side wall of the utility tunnel on the flame height, flame shape and temperature distribution of the ceiling. The flame height increases with the fire source gradually approaching the side wall from the center line. According to the flow path of the fire plume, the effective height of the ceiling is corrected. It is found that the longitudinal attenuation of temperature in the center of the ceiling shows a power exponential attenuation law. The temperature distribution under the tunnel ceiling near the fire source area is asymmetrical. When the distance from the fire source center to the side wall increases to 0.4 m and the longitudinal distance increases to 1.2 m, the temperature distribution tends to be symmetrical. Keywords: Side wall constraint, Flame height, Maximum temperature rise, Temperature distributionhttp://www.sciencedirect.com/science/article/pii/S2214157X19301145
collection DOAJ
language English
format Article
sources DOAJ
author Zhen-huan Liang
Guo-qing Zhu
Hao-nan Liu
Xiang Zhou
spellingShingle Zhen-huan Liang
Guo-qing Zhu
Hao-nan Liu
Xiang Zhou
Flame characteristic and ceiling temperature distribution under the effect of curved sidewall
Case Studies in Thermal Engineering
author_facet Zhen-huan Liang
Guo-qing Zhu
Hao-nan Liu
Xiang Zhou
author_sort Zhen-huan Liang
title Flame characteristic and ceiling temperature distribution under the effect of curved sidewall
title_short Flame characteristic and ceiling temperature distribution under the effect of curved sidewall
title_full Flame characteristic and ceiling temperature distribution under the effect of curved sidewall
title_fullStr Flame characteristic and ceiling temperature distribution under the effect of curved sidewall
title_full_unstemmed Flame characteristic and ceiling temperature distribution under the effect of curved sidewall
title_sort flame characteristic and ceiling temperature distribution under the effect of curved sidewall
publisher Elsevier
series Case Studies in Thermal Engineering
issn 2214-157X
publishDate 2019-09-01
description This experimental study focused on fire source combustion characteristics and the distribution law of fire temperature field in the utility tunnel caused by side wall constraint effect. The oil pans are placed at 0 m, 0.15 m, 0.3 m, 0.45 m from the side wall and the center of the model to study the influence of the side wall of the utility tunnel on the flame height, flame shape and temperature distribution of the ceiling. The flame height increases with the fire source gradually approaching the side wall from the center line. According to the flow path of the fire plume, the effective height of the ceiling is corrected. It is found that the longitudinal attenuation of temperature in the center of the ceiling shows a power exponential attenuation law. The temperature distribution under the tunnel ceiling near the fire source area is asymmetrical. When the distance from the fire source center to the side wall increases to 0.4 m and the longitudinal distance increases to 1.2 m, the temperature distribution tends to be symmetrical. Keywords: Side wall constraint, Flame height, Maximum temperature rise, Temperature distribution
url http://www.sciencedirect.com/science/article/pii/S2214157X19301145
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AT guoqingzhu flamecharacteristicandceilingtemperaturedistributionundertheeffectofcurvedsidewall
AT haonanliu flamecharacteristicandceilingtemperaturedistributionundertheeffectofcurvedsidewall
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