Analysis of Aerodynamic Characteristics of Screen Door under The Action of Subway Piston Wind
[1]YANG Weichao,PENG Limin,SHI Chenghua,et al.Analysis of Aerodynamic Characteristics of Screen Door under The Action of Subway Piston Wind[J].Journal of Zhengzhou University (Engineering Science),2009,30(02):120-124.
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
30卷
Number of periods:
2009年02期
Page number:
120-124
Column:
Public date:
1900-01-01
- Title:
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Analysis of Aerodynamic Characteristics of Screen Door under The Action of Subway Piston Wind
- Keywords:
- Subway; piston wind; screen doors; Aerodynamic characteristics
- CLC:
- -
- DOI:
- -
- Abstract:
- According to the three-dimensional incompressible Navier-Stokes equation and the standard κ-ε turbulence equation, the finite volume method was used to simulate the operation process of the train in the interval tunnel, the pressure change mechanism and pressure spatiotemporal variation characteristics of the screen door were studied, and the influence relationship between the train running speed, blocking ratio, piston wind shaft area, damper state and interval tunnel ventilation scheme and the screen door pressure was analyzed. The results show that the pressure change of the screen door is mainly determined by the two factors of the pressurized Cort turbulence of the train and the pressure wave in the interval tunnel, among which the pressurized Cort turbulence is the main influencing factor. The screen door pressure is proportional to the blocking ratio and the square of the train speed; Increasing the area of the piston air well and opening the piston damper is conducive to reducing the pressure of the screen door. The influence of the exhaust mode of the interval tunnel on the pressure of the screen door should be considered during the structural check.
- References:
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- Similar References:
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Last Update:
1900-01-01