标题：Smoke flow temperature beneath tunnel ceiling for train fire at subway station: Reduced-scale experiments and correlations
作者：Meng, Na; Wang, Qiang; Liu, Zhaoxia; Li, Xiao; Yang, He
作者机构：[Meng, Na] Shandong Univ Sci & Technol, Minist Sci & Technol, State Key Lab Min Disaster Prevent & Control Co F, Qingdao 266590, Shandong, Peoples R C 更多
通讯作者地址：[Meng, N]Shandong Univ Sci & Technol, Minist Sci & Technol, State Key Lab Min Disaster Prevent & Control Co F, Qingdao 266590, Shandong, Peoples R Chi 更多
来源：APPLIED THERMAL ENGINEERING
关键词：Train fire; Subway station; Maximum temperature; Longitudinal; temperature distribution; Platform-tunnel conjunction door;; Reduced-scale experiments
摘要：This paper is to investigate the smoke flow temperature beneath tunnel ceiling for a train on fire stopping besides a subway Station. Experiments were carried out in a reduced-scale (1:10) subway station model to study the maximum smoke temperature and the longitudinal temperature distribution beneath the tunnel ceiling by considering platform-tunnel conjunction doors of two types: the full-seal platform screen door (PSD) and the full-height safety door. For the maximum temperature beneath the tunnel ceiling, it is found to be well correlated non-dimensionally with heat release rate by a 3.65 and a 2.92 power law function for the full-seal platform screen door and the full-height safety door, respectively. For the longitudinal temperature distribution along the tunnel ceiling, it can be well correlated by an exponential function for both types of platform-tunnel conjunction doors. Concerning the effect of the door type, the maximum temperature is lower and the longitudinal temperature decays faster for full-height safety door than that for full-seal PSD. This is due to that with the full-height safety door, the effective width of the tunnel ceiling is widened, which results in more heat losses from the smoke flow to the ceiling. (C) 2017 Elsevier Ltd. All rights reserved.