双开口室内火灾火源空间位置影响规律试验研究  

Experimental study on the influence of the various spatial positions of the fire sources in a double opening compartment

作　　者：李贤斌 张诗琪[1] 何其泽 焦宇 汪金辉 LI Xian-bin;ZHANG Shi-qi;HE Qi-ze;JIAO Yu;WANG Jin-hui(School of Ocean Science and Engineering,Shanghai Maritime University,Shanghai 201306,China;Safety and Protection Technology Research Center,Shanghai Maritime University,Shanghai 201306,China;Shanghai Fire Research Institute of Ministry of Emergency Management(MEM),Shanghai 200032,China)

机构地区：[1]上海海事大学海洋科学与工程学院,上海201306 [2]上海海事大学安全与防护技术研究中心,上海201306 [3]应急管理部上海消防研究所,上海200032

出　　处：《安全与环境学报》2021年第3期1033-1039,共7页Journal of Safety and Environment

基　　金：国家自然科学基金项目(51706046)。

摘　　要：为研究火源空间位置对双开口单室内火灾行为的影响,搭建缩尺寸试验平台开展了一系列单室内不同空间位置火源火灾试验。结果表明,火源空间位置对双开口单室内温度分布有一定影响,整个燃烧阶段可分为发展、稳定燃烧、衰减、熄灭4个阶段。与横纵方向相比,火源在竖直方向上的变化对温度分布影响更大。火源升高后,低温区随之增厚而过渡区和高温区相应减薄,同时带来了更高的顶棚温度和更长的火焰扩展长度。火源在同一高度横纵方向移动时,不同位置温度与火源相对距离相关,越接近火源其温度越高,火源位置靠近壁面时,还受火焰贴附效应影响。The given paper is devoted to making an investigation and clarification of the effect of the spatial positions of the fire sources of the compartment fire. And,as a matter of fact,the spatial location change of the fire source may help to conduct a series of experiments in a reduced-scale model so as to trace and examine the effect of the fire location on the temperature in such a double-opening enclosure,so that the main focus of the observation and examination can be transferred to the temperature distribution of the regional positions near the wall,and the nearby regions of the corners,as well as the nearby the points of the doors and windows. To achieve the study goal,it is advisable to get the required data via the K-type thermocouple and the electronic balance. The results and the phenomena that can be found may call to suggest that the spatial position of the fire source can produce its effect on the temperature distribution in such a compartment. The entire combustion process can be divided into 4 stages,which is the initial stage,the stable burning stage,the attenuation stage,and,last of all,the extinction stage. Compared with the situation taking place in the horizontal and longitudinal directions,the change of the fire source in the vertical direction tends to have a greater influence on the temperature distribution. When the fire source is going on rise,the low-temperature zone may tend to get thickening,whereas the transition zone and the high-temperature zone may get thinner accordingly,which can also promote to push the ceiling temperature higher to prolong the flame extension. When the fire source moves to the same height in the horizontal and vertical directions,the temperature in all the various positions may get similar and related to all the relative distances from the fire source. In such a situation,the closer the fire is to the fire source,the higher the temperature would be. When the fire source is closer to the wall,it would also be affected by the flame attachment. Thus,the results of th

关 键 词：安全工程 单室火灾 火源位置 温度分布 火焰形态 多开口 

分 类 号：X932[环境科学与工程—安全科学]