Full-scale experimental and numerical studies on compartment fire under low ambient temperature

被引：41

作者：

Bystrom, Alexandra ^{[1
]}

Cheng, Xudong ^{[1
,2
]}

Wickstrom, Ulf ^{[1
,3
]}

Veljkovic, Milan ^{[1
]}

机构：

[1] Lulea Univ Technol, Div Struct & Construct Engn, SE-97187 Lulea, Sweden

[2] Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Peoples R China

[3] Swedish Natl Testing & Res Inst SP, Boras, Sweden

来源：

BUILDING AND ENVIRONMENT | 2012年 / 51卷

关键词：

Compartment fire; Temperature distribution; FDS; Low ambient temperature; SIMULATION; FDS;

D O I：

10.1016/j.buildenv.2011.11.010

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A fire experiment with wood crib was conducted in a concrete building under low ambient temperature of -10 degrees C to explore fire development and temperature distribution. The concrete building consists of a two-storey compartment with the size of 9.0 m by 5.0 m by 4.8 m high and a four-storey stairwell with the size of 5.0 m by 2.4 m by 10.0 m high. The fuel mass loss rate and temperatures at different positions were measured. Two fire cases, with different assumed ambient temperatures of -10 degrees C and 20 degrees C respectively, were then simulated by using FDS software to investigate the effect of ambient temperature and compare with the experimental results. The numerical results show that the calculated heat release rate is in reasonably good agreement with the measured full-scale result before water suppression. The calculated temperatures in the hot combustion gas layer at different positions agree also very well with the measured values. However, the measured fresh air temperature at the floor level near the fire source is higher than the calculated value. This discrepancy may partly depend on measuring errors as analyzed in the paper. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：255 / 262

页数：8

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