Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25064
Title: Numerical simulations on fire spread and smoke movement in an underground car park
Authors: Zhang, XG
Guo, YC
Chan, CK 
Lin, WY
Keywords: Car fire
Car park
Numerical simulation
Smoke movement
Ventilation
Issue Date: 2007
Publisher: Pergamon Press
Source: Building and environment, 2007, v. 42, no. 10, p. 3466-3475 How to cite?
Journal: Building and environment 
Abstract: The Fire Dynamic Simulator code is used to investigate fire spread and smoke movement in a large underground car park under different fire scenarios. Initially, by comparing with experimental results of heat release rate of a single car fire, the development of car fire is designed by letting surface densities of the fuel over the car. Fire spread and movement of smoke are then investigated under different ventilation conditions. Simulated results show that the development of car fire in the underground car park can be classified into four stages; namely an initial stage, a developed stage, an extinction and re-burning stage and another fast-developed stage. Affected by ventilation systems, fire develops rapidly resulting in consuming most oxygen quickly followed by early extinction of the fire. After extinction of the fire, with more ambient air drawn into the car park due to ventilation, re-ignition takes place with accelerated development. In addition, detailed field distributions of temperature and velocity vectors are given. It is found that the smoke layer decent to the top of the car after 15 min and the hot smoke flows in a disorderly manner resulting in the spread of fire more rapidly.
URI: http://hdl.handle.net/10397/25064
ISSN: 0360-1323
EISSN: 1873-684X
DOI: 10.1016/j.buildenv.2006.11.002
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