摘要
依据报道的“建筑-走廊”结构中的全尺寸实验数据,研究了腔室火灾产生的烟气在毗邻的走廊中传播迁移的规律。利用数值模拟方法复现了此实验结果,并开展了进一步研究。结果证明了烟气中的气体成分迁移的速度比烟气中的颗粒更快一些。分析认为遇难者大量死于远距离处的主要原因是走廊中下层烟气是从远离火源处向近距离传播的。此外,实验结论的基础上,通过数值模拟技术更为细致地揭示了上层烟气传播的路线。
Many fatalities in building fires often occur in a remote locations from the fire room, with the primary cause of toxic gases inhalation. The characteristics of transport of smoke from the compartment fires in the adjacent corridor was studied based on the data of full-scale experiment reported recently. Numerical simulation was performed and results indicate that the velocity of toxic gases is bigger than that of smoke particles. Analytic results prove that smoke transport from the remote location to the fire vicinity in the lower layer is the main cause of many fatalities occurring in the locations remote from the fires. Furthermore, numerical simulation shows a more detailed route of smoke transport in the upper layer on the basis of the experiment results concluded by Soo-Young Kim et al.
出处
《热科学与技术》
CAS
CSCD
2006年第3期257-261,共5页
Journal of Thermal Science and Technology
基金
国家自然科学基金资助项目(50536030)
关键词
烟气传播
毒性气体
疏散
数值模拟
全尺寸实验
smoke transport
toxic gases
evacuation
numerical simulation
full-scale experiment
