Simulation Analysis of CO Concentration Distribution in Beijing Yuntong Tunnel
- 1 Institute of Civil Engineering, North China Institute of Science and Technology, Langfang, China
- 2 Institute of Civil Engineering, North China Institute of Science and Technology, Langfang, China
- 3 Institute of Civil Engineering, North China Institute of Science and Technology, Langfang, China
Abstract
In this paper, the concentration distribution of CO emitted by motor vehicles in Beijing Yuntong Tunnel is simulated and analyzed based on Fluent numerical simulation software. Firstly, the physical model of tunnel geometry is established. Secondly, the suitable control equations and boundary conditions are selected to describe the diffusion distribution of pollutants in the tunnel. At the same time, the reliability of the model is verified according to the measured data, and the distribution law of CO concentration in the tunnel is observed through the simulation results. The tunnel is unorganized at the entrance of the tunnel. In the simulation results, the CO concentration at the entrance of the tunnel is far more than the CO unorganized emission limit in Beijing. The CO emission of the tunnel should be purified to prevent pollution of the urban environment.
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