Numerical simulation of fire-induced flow through a stairwell

被引：15
|
作者：
Qin, TX
Guo, YC
Chan, CK [1 ]
Lau, KS
Lin, WY
机构：
[1] Hong Kong Polytech Univ, Dept Appl Math, Kowloon, Hong Kong, Peoples R China
[2] Tsing Hua Univ, Dept Engn Mech, Beijing 100084, Peoples R China
[3] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China
来源：
BUILDING AND ENVIRONMENT | 2005年 / 40卷 / 02期
关键词：
fire-induced flow; stairwell; large eddy simulation;
D O I：
10.1016/j.buildenv.2004.07.011
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Smoke movement and ambient airflow in a stairwell under fire scenarios are studied numerically using large eddy simulation. Numerical investigation is performed on a typical two-storey confined stairwell, with an open door on the top floor and a fire source on the ground floor. Results show the existence of fairly distinct layers of hot smoke and ambient air under different fire scenarios. It is found that heat release rate has a remarkable effect on distributions of smoke temperature, velocity and oxygen concentration. This paper indicates that detailed patterns of velocity, temperature and species concentration and their evolutions can be predicted by numerical simulation of a stairwell during a fire. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：183 / 194
页数：12
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