5th Asia Conference on Mechanical and Materials Engineering | |
The effects of sidewall constraint on temperature distribution of fire-induced thermal flow under an arc-ceiling | |
机械制造;材料科学 | |
Zhou, Tiannian^1 ; Rong, Jianzhong^2 ; Wang, Jian^1 | |
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui | |
230026, China^1 | |
Sichuan Fire Research Institute of Ministry of Public Security, Chengdu, Sichuan | |
610036, China^2 | |
关键词: Centerlines; Constraint effects; Cross-sectional structures; Fire locations; Thermal flows; Tunnel model; | |
Others : https://iopscience.iop.org/article/10.1088/1757-899X/241/1/012038/pdf DOI : 10.1088/1757-899X/241/1/012038 |
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学科分类:材料科学(综合) | |
来源: IOP | |
【 摘 要 】
A numerical study with varying transverse fire locations based on a semicircle tunnel model was carried out and it was used to further compare with the rectangular model in the published literature, aimed to investigate the influence of cross-sectional structure on temperature distribution under the ceiling. Results demonstrate that the reduction in temperature along the tunnel centerline under the flat ceiling is greater than that under the arc-ceiling. In addition, the influence of constraint effect of sidewall under the arc-ceiling is more significant than the flat ceiling because the flame would attach the ceiling when the fire is near the sidewall.
【 预 览 】
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The effects of sidewall constraint on temperature distribution of fire-induced thermal flow under an arc-ceiling | 770KB | download |