Piston Wind Speed Calculation Method and Analysis of Influence Factors for Subway Tunnel

doi:10.12068/j.issn.1005-3026.2019.05.017

Journal of Northeastern University Natural Science ›› 2019, Vol. 40 ›› Issue (5): 694-699.DOI: 10.12068/j.issn.1005-3026.2019.05.017

• Mechanical Engineering • Previous Articles Next Articles

Piston Wind Speed Calculation Method and Analysis of Influence Factors for Subway Tunnel

LUO Zhong^1,2， HAN Gui-xin^1,2， ZHAO Kai³， HUANG Shu-zhi³

1. School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China; 2.Key Laboratory of Ministry of Education on Vibration and Its Control of Aerospace Power Equipment， Northeastern University， Shenyang 110819， China; 3. Shenyang Operation Branch of Metro Group Company Limited， Shenyang 110011， China.

Received:2018-03-19 Revised:2018-03-19 Online:2019-05-15 Published:2019-05-17
Contact: LUO Zhong
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Abstract

Abstract: To avoid damages by the piston wind to the safty doors and AD light boxes in subway tunnels， the aerodynamic characteristics of subway tunnel with and without shaft were analyzed， one-dimensional Bernoulli equations and fluid continuity equations between tunnel sections were established， the numerical calculation model of the piston wind under different tunnels were analyzed， the simulation model established by SES software and calculation model results were also verified. The principal factors affecting the piston wind speed are studied. The results show that the piston wind speed is proportional to the train speed， the length of the train and the smoothness of the train surface. The height， the section area and the position of the air shaft have little effect toward the piston wind speed. The proposed numerical calculation model can be used for the simple calculation of the piston wind speed in actual projects.

Key words: subway tunnel, piston wind, subway environmental model, SES(subway environ-mental simulation), velocity field

CLC Number:

U453.5

LUO Zhong， HAN Gui-xin， ZHAO Kai， HUANG Shu-zhi. Piston Wind Speed Calculation Method and Analysis of Influence Factors for Subway Tunnel[J]. Journal of Northeastern University Natural Science, 2019, 40(5): 694-699.

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Piston Wind Speed Calculation Method and Analysis of Influence Factors for Subway Tunnel

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