摘要
采用标准的k-ε湍流模型,对安设屏蔽门系统的三维岛侧混合地铁站台的不同火灾场景进行了数值模拟研究。结果表明;火灾发生在地铁侧式站台时,邻近的楼梯口的烟囱效应显著,成为喷烟口;火灾发生在岛式站台时,烟气主要向站台的隧道两侧蔓延;屏蔽门对热量的传递起到了阻碍作用,对烟气的蔓延起到阻挡和推迟作用,对人员的安全疏散起着至关重要的作用。
The standard k-εturbulence model was adopted to simulate smoke flow in three-dimensional station with island-platform and side-platform with platform screen door system on different fire scenes.The simulation results show that the chimney effect is significant and become a smoke mouth near the stairs when fire took place in subway side-platform;the smoke is mainly expanded the sides of tunnel when fire occurred in subway island-platform;The screen door system act the role of counterwork on the transfer of heat and obstruct from smoke spread,and it is key to safety evacuate for persons in hybrid station.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第2期317-320,共4页
Journal of Engineering Thermophysics
基金
北京市科学技术委员会重点项目资助(No.Y060506000007022)
