CFD simulation and analysis of smoke dispersion in a subway fire

CHEN Kecheng; XIE Jiabin; YAO Qinghe

doi:10.13471/j.cnki.acta.snus.2019.02.003

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CFD simulation and analysis of smoke dispersion in a subway fire

更新时间：2023-12-11

- CFD simulation and analysis of smoke dispersion in a subway fire
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 58, Issue 2, Pages: 15-22(2019)
- 作者机构：
  
  中山大学航空航天学院,广东,广州,510006
- 作者简介：
- 基金信息：
- DOI：10.13471/j.cnki.acta.snus.2019.02.003
  CLC：
- Published：2019，
  
  Published Online：25 March 2019，
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CHEN Kecheng, XIE Jiabin, YAO Qinghe. CFD simulation and analysis of smoke dispersion in a subway fire. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 58(2):15-22(2019)
DOI：

CHEN Kecheng, XIE Jiabin, YAO Qinghe. CFD simulation and analysis of smoke dispersion in a subway fire. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 58(2):15-22(2019) DOI： 10.13471/j.cnki.acta.snus.2019.02.003.

摘要

为探讨地铁站火灾烟气的扩散规律，使用火灾动力学模拟软件(FDS)对广州大学城北地铁站站台进行了火灾烟气扩散规律研究。根据地铁站内的实测温度、风速等数据确定了数值模拟所需的边界条件，运用湍流大涡模拟方法和信息传递接口(MPI)对地铁站台进行了实景模拟。结果表明：当站台中央发生火灾时，左侧烟气浓度比右侧高约133%，一氧化碳浓度比右侧高约75%，温度比右侧高约41%；相比之下，站台右侧更适合人员逃生。

Abstract

To investigate the flow regularity of smoke in the subway station

Fire Dynamics Simulator is used to study the fire smoke spread in the Higher Education Mega Center North Station. The boundary conditions required for numerical simulation are determined based on the measured temperature and air velocity in the subway station. Large Eddy Simulation (LES) and Massive Passage Interface (MPI) are used to do realistic view simulation of the subway platform. As the result shows

when a fire breaks out in the middle of the platform

smoke concentration

CO concentration and temperature on the left part of the platform are about 133 percent

75 percent and 41 percent respectively higher than those on the right part. Therefore

the right part of the platform is more secure for personnel evacuation.

关键词

站台火灾数值模拟逃生策略烟气扩散

Keywords

subway platform firenumerical simulationevacuation strategysmoke spread

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Related Institution

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School of Sciences， Chang'an University

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