高速公路隧道洞口气流流态的有限元分析  

Finite Element Analysis of State of Airflow at Tunnel Portals on Expressways

作　　者：李清 谢永利[2] 金文良[3] 

机构地区：[1]广东交通集团检测中心,广州510800 [2]长安大学,西安710064 [3]广东省公路勘察规划设计院,广州510507

出　　处：《公路交通技术》2008年第3期101-103,共3页Technology of Highway and Transport

基　　金：交通部西部交通建设科技项目(200131800071)

摘　　要：若公路隧道是小净距隧道,通风时相邻隧道排出的污染空气会被吸进邻近的隧道中而产生交叉污染。应用计算流体动力学(CFD)技术对高速公路上下行隧道进出口处气体流态进行分析,判断在洞口区域是否产生污染气体的交叉感染,并提出如何避免交叉感染的相关措施。On condition that the expressway tunnels are small clear- distance ones, the polluted air discharged from one of the adjacent tunnels during ventilation will be absorbed into the others to generate cross contamination. This paper incorporates the CFD （computational fluid dynamics） technique to analyze the state of airflow at upward and downward tunnel entrances and exits on expressway, and judges whether the cross contamination of polluted air is produced or not in the portal area, and finally puts forward the relative countermeasures against cross contamination.

关 键 词：隧道工程 计算流体力学 通风 交叉污染 

分 类 号：U453.1[建筑科学—桥梁与隧道工程]