Study on the maximum temperature beneath the ceiling with different neutral plane heights for long narrow space fires

被引：1
|
作者：
Zhu, Xinlei [1 ]
Zhao, Weifeng [1 ]
Fan, Xueliang [1 ]
Deng, Yelin [1 ]
Jia, You [1 ]
机构：
[1] Soochow Univ, Sch Rail Transportat, Suzhou 215131, Jiangsu, Peoples R China
来源：
HEAT AND MASS TRANSFER | 2023年 / 59卷 / 06期
基金：
中国国家自然科学基金;
关键词：
CRITICAL VENTILATION VELOCITY; ROAD TUNNEL; SMOKE TEMPERATURE; LONGITUDINAL VENTILATION; EXTRACTION; BLOCKAGE; COMBINATION; LENGTH; FIELD; FLOW;
D O I：
10.1007/s00231-022-03314-y
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An experimental study and the dimensionless global correlation between the opening position and the maximum gas temperature beneath the ceiling under natural ventilation have been carried out. The results show that opening position and fire size play an important role on the heat release rate (HRR) and maximum temperature. Compared with Li's model, an empirical formula was developed to predict the maximum temperature beneath the ceiling, which was verified by numerical simulation and experimental simulation. The predicted values agree well with the experimental and simulated data, and the errors are within 20%. Compared with Hu's model, the end opening (end blockage) has a certain degree influence on the maximum temperature, and the smaller the fire size, the greater the influence is.
引用
收藏
页码：1037 / 1047
页数：11
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