摘要
基于全尺寸室内实体火灾实验,建立单室轰燃温升模型。在徐州市某化工厂一办公室内进行轰燃火灾实验,观察实验中的轰燃现象并记录室内温度变化;选取房间内烟气为研究对象,分析热量平衡关系建立单室轰燃温升模型;利用数值方法求解该模型并与实验结果比较,判定单室轰燃温升模型的准确性。结果表明:将室内烟气视为均匀体所建立的单室轰燃温升模型能够准确模拟室内火灾温升过程,为轰燃后建筑物材料和结构的受损评估提供依据。
A temperature rising model of flashover in single room was built based on the full-scale experiment of practical com- partment fire. The flashover fire experiment was done in an of- lice in a chemical plant of Xuzhou, and experimental phenome- non and indoor temperature change were observed and recor- ded. With the smoke in the office selected as research object, temperature rising of flashover was modeled after the analysis of heat balance. The temperature rising model of flashover was solved numerically, and accuracy of the model was judged through comparing the calculated values and the experiment＇s. The results show that the established temperature rising model of flashover in single room with indoor smoke as homogeneous body can describe the heating process of compartment fire well and truly, and provide basis for the damage assessment of building materials and structure after flashover.
出处
《消防科学与技术》
CAS
北大核心
2013年第8期821-825,共5页
Fire Science and Technology
关键词
单室火灾
全尺寸实验
轰燃
温升模型
single room fire
full-scale experiment
flashover
temperature rising model
