摘要
采用射流模型预测大空间烟气层的变化规律,并与理想羽流模型预测值及全尺寸池火灾的数据进行分析比较.结果表明:射流模型预测值与理想羽流模型预测值的相对误差为0.7%~11.1%,在工程允许范围内;由于初期阶段没有形成稳定的烟气层,射流模型预测值与实验值有一定误差,但随着烟气层下降至4 m时,射流模型与全尺寸的池火灾试验相比,其相对误差仅为2.96%,说明射流模型能够用于预测大空间烟气层高度变化规律.
The variation of smoke layer was predicted by jet model,and compared with the data of ideal plume model and full-size pool fire.Results showed that:The relative error between jet model and ideal plume model is 0.7% ~ 11.1%,which satisfies the engineering requirement; since the smoke layer is not stable in the early stages,there are a certain errors between the value based on jet model and experimental values;as the smoke layer drop to 4 m,the relative error between jet model and the experiment is only 2.96%.The paper showed that the jet model can be used to predict the variation of smoke layer height in large space.
出处
《消防科学与技术》
CAS
北大核心
2014年第10期1112-1114,1118,共4页
Fire Science and Technology
基金
江苏省自然科学基金项目(BK20131117)
江苏高校优势学科建设工程(PAPD)
关键词
大空间建筑
烟气填充
射流模型
火灾实验
large space buildings
smoke filling
jet model
fire experiment