化工学报2019，Vol.70Issue(6)：2397-2408,12.DOI:10.11949/j.issn.0438-1157.20181513
圆筒形地下立体停车库火灾火源位置与火势蔓延规律研究
Research on fire location and law of fire spread of cylindrical three-dimensional underground garage
摘要
Abstract
A typical cylindrical three-dimensional underground garage is selected as the object of this research. In the condition of the natural ventilation, star-ccm+ software was used to simulate the fire scene in the garage. The negative layer, the negative six layer and the negative ten layer are selected as the fire points respectively. It calculated out that, the deeper the fire source, the higher the center temperature of the roof. The temperature values are respectively 860, 927 and 942℃. The center temperature of parking spaces on the same floor as the fire are all higher than 200℃. When a car get fired, its adjacent vehicles, upper vehicles and relative vehicles will be ignited at about 240, 312 and 322 s. The deeper the fire source, the shorter the time it takes to ignite its nearby vehicles. At the same time, the calculated value is compared with the theoretical value. In this article, the theoretical formula for calculating the ignition time of vehicles near the fire source, is only applicable to conservative estimates of vehicles with the same level of fire and with no shelter between them. And it is not applicable to the calculation of the ignition time of upper and lower vehicles of the fire source. According to the calculation, this type of garage can not discharge heat rely on natural ventilation. It is necessary to exhaust smoke from the parking spaces in the same level as fire source, which are under greater impact, so as to control the development of the fire.关键词
star-ccm+/数值模拟/辐射/地下立体停车库/火灾/湍流/火源位置Key words
star-ccm+/numerical simulation/radiation/three-dimensional underground garage/fire/turbulent flow/fire location分类
土木建筑引用本文复制引用
彭婷,袁中原,袁艳平,曹晓玲..圆筒形地下立体停车库火灾火源位置与火势蔓延规律研究[J].化工学报,2019,70(6):2397-2408,12.基金项目
建筑环境与能源高效利用四川省青年科技创新研究团队项目(2015TD0015) （2015TD0015）
国家自然科学基金项目(51378426,51678488) （51378426,51678488）
