摘要
为了验证FDS大涡模拟研究实体建筑轰燃特性的可靠性,利用FDS对某实体建筑轰燃过程中的烟气层温度进行了数值计算;通过开展全尺寸火灾轰燃实验测得了着火房间轰燃过程中的室内温度特性参数。将FDS大涡模拟数值计算结果与实测结果进行对比分析,发现数值计算和实测轰燃过程中烟气层最高温度之间的相对误差约为13.4%,室内轰燃平均温度之间的相对误差约为7.6%;模拟结果和实测数据吻合较好。研究表明,FDS大涡模拟能准确预测室内轰燃温度。
The smoke layer temperature of the flashover process in a physical architecture was numerically calculated using Fire Dynamics Simulator(FDS) to verify the reliability of FDS with large eddy simulation on flashover characteristics of physical architectures.Full scale flashover fire test was performed to get room temperature in the flashover process.From the comparison with numerical simulation results and experimental ones,the relative error of maximum temperature of smoke layer in flashover process between numerical calculation and experimental measurement is about 13.4%,and the relative error of average temperature of indoor flashover between them is about 7.6%.Simulation results and experimental data are in good agreement.The results show that FDS with large eddy simulation can accurately predict the temperature of indoor flashover.
出处
《消防科学与技术》
CAS
北大核心
2013年第5期499-507,共9页
Fire Science and Technology
基金
江苏省土木工程环境灾变与结构可靠性重点实验室开放基金项目"高大空间建筑非均匀受火钢结构温度场分布与性能化防火设计研究"(JSKL2011YB11)~~
关键词
室内火灾
轰燃
大涡模拟
可靠性分析
compartment fire
flashover
large eddy simulation
reliability analysis
