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作者:

Shuangliu (Shuangliu.) | Li, Yanfeng (Li, Yanfeng.) | Li, Jiaxin (Li, Jiaxin.)

收录:

EI Scopus

摘要:

It is important to keep fire safety for subway system especially for subway tunnel. This paper selects a 2.2 km tunnel of Beijing subway as the research object, and studies fire scenario for a stopped train with natural ventilation. The multi-scale method where a three-dimensional field model and a one-dimensional network model are combined is used to simulate smoke propagation in a tunnel fire. The effects of train length on the smoke propagation, temperature and visibility distribution are analyzed. The results show that during the initial period of 120s, the influence of train length on temperature distribution, visibility distribution and smoke distribution is not obvious. However, after 120s period, smoke distribution becomes more concentrated with the increase of train length, and the impact of stack effect is more obvious. For a shorter train, the concentration of smoke is higher. The temperature distribution inside the 60 m train is higher than those of 120m and 160m trains. © 2023 Institute of Physics Publishing. All rights reserved.

关键词:

Railroad tunnels Temperature distribution Visibility Ventilation Subways Smoke Fires

作者机构:

  • [ 1 ] [Shuangliu]Beijing Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing, China
  • [ 2 ] [Li, Yanfeng]Beijing Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing, China
  • [ 3 ] [Li, Jiaxin]Beijing Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing, China

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ISSN: 1742-6588

年份: 2023

期: 1

卷: 2424

语种: 英文

被引次数:

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SCOPUS被引频次: 1

ESI高被引论文在榜: 0 展开所有

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