NS方程在隧道通风工程中的应用

在隧道通风工程中，为了研究通风过程中风压风速度的变化情况，将隧道中空气的流动看成流体力学中所研究的粘性不可压缩流体的非定常流动。用NS方程作为隧道通风的数学模型，采用三次插值伪质点法求解NS方程。以浙江台州104国道黄土岭隧道风改建工程为研究对象，对不同长度和高度的引洞通风状况给出计算机数值模拟，并进一步分析通风过程中风压风速的变化情况。从达到通风要求、提高通风效率的角度出发，可根据本文的计算结果与数据分析，选择最优化的通风方案。

Application of NS Equation to Tunnels' Ventilation

In order to research the wind velocity and pressure of tunnels' ventilation, the airflow was regarded as a viscous incompressible unsteady flow. NS equation was adopted as the model of tunnels' ventilation, and this model was solved by Cubic Interpolated Pseudo-particle Method. The remodification of Huangtuling tunnel, which is the part of the 104 national highway in Zhejiang Province, was chosen as an example to study. Given different tunnels' length and height, the computer simulation of tunnel's ventilation was completed. The change of wind velocity and pressure was analysed. In terms of ventilation efficiency, this paper offers sufficient evidence to design the optimum ventilation.