二郎山隧道通风系统局部影响数值模拟研究

Numerical Simulation for Local Effect of Semi-transverse Ventilation System of Erlangshan Road Tunnel

二郎山隧道具有特长、高海拔、气候多变、双向交通、洞内汽流复杂等特点,所采用的平导送风半横向通风方式在我国是首次应用。运用CFD软件模拟该隧道半横向通风系统的局部空气流动状态、隧道及竖井和联接风道的局部阻力特性,得出各种几何结构型式和不同通风流量条件下,用于一元流模拟模型计算的局部阻力系数。

Er Lang Shan Tunnel, adopting the semi -transverse ventilation system for the first time in China, is characteristic of extensive length, high altitude, multivariate climate, two-way traffic and complex wind stream. Based on FEM software CFD, the distributed losses, the conflux losses and the shoot of jet fans in the semi-transverse ventilation system of Er Lang Shan highway tunnel are studied through numerical simulation.Local resistance coefficients are obtained for numerical simulation of the semi - transverse ventilation under various work conditions.