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Differences and merging automobile tunnels and contamination of air flow
Author: JinDongLin
Tutor: LuZhiLiang
School: Nanjing University of Aeronautics and Astronautics
Course: Fluid Mechanics
Keywords: Vehicular tunnel Differences confluence Diffusion equation Finite volume Tunnel pollution
CLC: O355
Type: Master's thesis
Year: 2007
Downloads: 65
Quote: 1
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Abstract
Vehicles entering and leaving both ends in a tunnel complex , the control of pollutants inside the tunnel the tunnel builders must concern, especially some across the river , over a long mountain tunnel . In order to study the contamination distribution inside the tunnel complex , we must first understand the situation inside the tunnel airflow . General long tunnel will take some tunnels pollution reduction measures, which is in line with the needs of the tunnel , its efficiency is not the highest , which requires us to consider . This paper studies the confluence with the case of disagreement with the car in the tunnel airflow distribution and pollution , and some of the sewerage schemes were analyzed. Differences and merge with established automobile tunnel model , Runge  Kutta method to calculate the tunnel airflow conditions , on the basis of solving the pollution diffusion equation to calculate the vertical distribution of contamination inside the tunnel , and analyzes the tunnel of different parameters on the distribution of contamination inside the tunnel . Get inside the tunnel complex air flow and pollution studies a set of engineering estimation methods . The results show that this method is effective. Tunnel design phase in the composite have a major significance.

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