A computational analysis of a ventilation system in a subway tunnel is carried out by solving 3D Reynolds-averaged Navier-Stokes equations for train-induced unsteady flow using the sharp interface method as the model for the moving boundary of an immersed solid. The ventilation performance is evaluated depending on the location of the vent shaft by analyzing the ventilating flow rate through the shaft and the feature of the flow field in the subway tunnel around the shaft. It is found that the optimum location of the vent shaft with respect to maximizing ventilation performance lies near the station.
Effects of vent shaft location on the ventilation performance in a subway tunnel
Einfluss der Position des Luftschachtes auf die Belüftung eines U-Bahn-Tunnels
Journal of Wind Engineering and Industrial Aerodynamics ; 97 , 5-6 ; 174-179
2009
6 Seiten, 21 Quellen
Article (Journal)
English
Submerged tunnel ventilation shaft and submerged tunnel ventilation system
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