Study of the fire characteristics for multi-source fires in the confined corridor

Multi-source fires burning is a fundamental process involved with the development from group fire to regional fire. However, there is great difference for the burning characteristics between the multiple fire sources and one single fire source, which has not been paid much attention in the previous...

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Bibliographic Details
Published in:Journal of wind engineering and industrial aerodynamics 2015-12, Vol.147, p.239-250
Main Authors: Zhao, Weifeng, Zong, Ruowen, Liu, Jiahao, Ye, Jiana, Zhu, Kongjin
Format: Article
Language:English
Subjects:
Combustion
Computer simulation
Corners
Corridor fire
Corridors
Fires
Gaussian
Multi-source fires
Numerical simulation
Small scale
Temperature distribution
Velocity
Wind engineering
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Summary:Multi-source fires burning is a fundamental process involved with the development from group fire to regional fire. However, there is great difference for the burning characteristics between the multiple fire sources and one single fire source, which has not been paid much attention in the previous study. In this paper, small-scale tests and numerical simulations have been conducted to investigate the fire characteristics at the case of simultaneous occurrence of two corridor fire sources. Both the experiment and simulation results indicated that obvious tilted flame and the phenomenon of moving closer to each other had been observed between the two fire sources. The simulation results predicted the velocity distribution in some sections always subjected to Gaussian profile for subsection. Besides, in the experiments, with the increase of fire size at the corner, the time for the peak ceiling temperature between two fires arrived earlier, and the distribution of vertical temperature was in a good agreement with Gaussian profile under different sizes of middle fires. •Fire characteristics for multi-source fires in the corridor have been studied.•Vertical velocity in some sections subjected to Gaussian profile for subsection.•Vertical temperature was in a good agreement with Gaussian profile.
ISSN:0167-6105
1872-8197
DOI:10.1016/j.jweia.2015.10.008