【作者】 宗若雯； 李松阳； 魏涛； 支有冉； 廖光煊；

【Author】 ZONG Ruowen 1,2,LI Songyang1,2,WEI Tao 1,2,ZHI Youran1,2 LIAO Guangxan1,2 (1.State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230026,China;2.Suzhou Institute for Advanced Study,University of Science and Technology of China,Suzhou Urban Public Safety Laboratory,Suzhou 215123,Jiangsu,China)

【机构】 中国科学技术大学火灾科学国家重点实验室； 中国科学技术大学苏州研究院苏州市城市公共安全重点实验室；

【摘要】 轰燃是室内火灾过程中的一个瞬间,但却是至关重要的阶段。本文基于火灾重构的角度对轰燃现象进行数值模拟和实验模拟研究,比较了CFAST和FDS的数值模拟结果与实验值的差别。CFAST在模拟火源热解和燃烧反应上存在不足,使其在火场重构中的应用受到限制;它模拟的烟气层温度普遍高于实验值。但是CFAST在轰燃理论的研究上可以起到辅助作用;FDS能模拟火源的热解和燃烧过程,进而较好预测腔室火灾的发展过程。更多还原

【Abstract】 Flashover is a rapidly occurring transitional event in the development of a compartment fire.In this paper flashover is under research in the experimental and numerical simulation from the view of fire reconstruction.The numerical simulation results in CFAST and FDS were compared with the experimental results.CFAST was weak in modeling the thermal degradation of fire source and the combustion reaction,which would limit the application of CFAST in fire scene reconstruction.FDS could well predict the development process of compartment fire by modeling the thermal degradation of fire source and the combustion process properly.更多还原