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A Numerical Study on Air Distribution and Flow in the Passenger Cabin of a High-Speed Electric Train

고속전철 객실의 공기 분배 및 기류에 관한 수치해석적 연구

  • Myong, Hyon-Kook (Department of Mechanical Engineering, Kookmin University) ;
  • Yoo, Kyung-Hoon (Nanoscale Contamination Control Laboratory, Korea Institute of Industrial Technology(KITECH)) ;
  • Hwang, Jungho (Department of Mechanical Engineering, Yonsei University)
  • 명현국 (국민대학교 기계공학부) ;
  • 유경훈 (한국생산기술연구원 나노오염제어연구실) ;
  • 황정호 (연세대학교 기계공학부)
  • Received : 2019.03.25
  • Accepted : 2019.03.29
  • Published : 2019.03.31

Abstract

Numerical analysis has been conducted on three-dimensional airflow distribution in the passenger cabin of a high-speed electric train. The types of air distribution systems investigated in the present study were those of TGV and Shinkansen. The Reynolds-averaged Navier-Stokes equations governing the mass and momentum conservations of the airflow in the cabin were solved by using a finite volume method, which are coupled with the standard $k-{\varepsilon}$ turbulence model equations. Predicted velocity distributions were presented on several selected planes in the passenger cabin. The present three-dimensional simulations were found to show the overall features of the airflow in the passenger cabin fairly well. In particular, it was shown that the type of air distribution for Shinkansen was more suitable for a non-smoking cabin than that for TGV.

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Fig. 1. Schematic diagram of the present air distribution system in the passenger cabin for high-speed electric trains

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Fig. 2. Schematic diagram of the air flow in the passenger cabin for TGV

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Fig. 3 Computational model of the passenger cabin and grid configuration

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Fig. 5A. Predicted velocity distributions on several selected planes for the TGV-type air distribution system

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Fig. 5B. Predicted velocity distributions on several selected planes for the TGV-type air distribution system

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Fig. 6A. Predicted velocity distributions on several selected planes for the Shinkansen-type air distribution system

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Fig. 6B. Predicted velocity distributions on several selected planes for the Shinkansen-type air distribution system

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Fig. 4. Selected planes to present the predicted results

Table 1. Comparative air distribution conditions for the passenger cabins of TGV and the present high speed electric trains

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References

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