Numerical Simulation on Ventilation Effect of Train-Induced Wind in Subway

Abstract:

Based on the unsteady incompressible three-dimensional N-S equations and standard k-ε turbulent model, Sliding Interface Method (SIM) is used to simulate the relative movement between the train and tunnel. The exchange process between the tunnel and the external atmosphere was simulated during the train traveling in subway. Meanwhile, the ventilation capability concerning such factors as train assembly, areas and length of duct were analyzed in detail. Result showed: The schematic of shafts at both end of subway station is more efficiency of ventilation, and improving the train assembly and shortening the length of shaft are helpful to enhance the air exchange of tunnel. In non-air-conditioning, the Open-MTR environmental control system model is feasible. Expanding the area of shaft would not enlarge the air exchange of tunnel efficiently.

• Periodical: Applied Mechanics and Materials (Volumes 444-445)
• Pages: 450-454
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.444-445.450
• Online since: October 2013
• Authors: Wei Chao Yang, Li Min Peng, Cheng Hua Shi, Zi Lin Hu
• Keywords: Aerodynamic Effects, Piston Air, Subway, Ventilation

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