二郎山隧道运营通风数值模拟研究

二郎山隧道是我国首次采用平导送风型半横向式通风系统的高海拔特长公路隧道，具有气候多变、双向交通和洞内汽流复杂等特点。基于通风网络理论建立不同条件下一元流数学模型，模拟交通量变化、行车速度变化、自然风压变化和风机开启台数变化隧道通风系统内风场分布特征，分析阻塞交通流增加及风机开启数量增加时通风系统应付车流阻塞的最大能力。

Numerical Simulation of Ventilation in Use for Er Lang Shan Road Tunnel

Er Lang Shan tunnel is the largest absolute altitude highway tunnel in China, in which the semi -transverse ventilation system was firstly used. It is characterized by extensive length, higher absolute altitude, multivariate climate and complex wind stream. Based on one-dimensional fluid mathematic models, the characteristics of distribution of wind field were simulated under diversive conditions such as number of fans, transportation stream and natural pressure. The maximal capability of ventilation system to process the vehicle jam in case of increase of fans and vehicles was also analyzed.