气体喷射火灾下热辐射研究  

Research on Heat Radiation in Gas Jet Fire

作　　者：李玉[1] 

机构地区：[1]中国人民武装警察部队学院灭火救援技术公安部重点实验室

出　　处：《中国安全科学学报》2011年第2期68-71,共4页China Safety Science Journal

基　　金：公安部应用创新计划项目(2008YYCXWJXY115)

摘　　要：为减少火灾的热辐射伤害和制定合理的作战、疏散方案,借鉴国内外泄漏模型和热辐射模型,考虑到火灾中火焰高度因素,建立压力泄漏-火焰高度-热辐射计算模型,编制了计算程序。对点源辐射模型进行改进,增加火焰宽度的影响,改善了单点源模型的精度,且试验验证了模型的精确性。结果表明:改进的多点源模型比单点源模型能更真实地反映火灾热辐射情况,误差在5%左右。编制的计算机程序,可以实现气体喷射火灾热辐射分布的快速计算。In order to reduce the damage of fire radiation and formulate rational fighting and evacuation plan,by referring to the leakage models and heat radiation models at home and abroad,a pressure leakage-flame height-radiation calculation model was established with consideration on the flame height in large fire.And its corresponding calculation procedure was developed.By increasing the flame width and making an improvement on the single-point source radiation model,a multi-point source radiation model was established,which improves the accuracy of single-point source radiation model.Experimental results show that the multi-point source model has a higher precision than the single point source model with an error within 5%,and the developed calculation procedure can realize the fast calculation of gas jet fire radiation.

关 键 词：气体喷射 热辐射 泄漏 点源模型 火灾 

分 类 号：X937[环境科学与工程—安全科学]