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Journal of Mechanical Science and Technology

, Volume 32, Issue 11, pp 5285–5292 | Cite as

Prediction of entry compression waves induced by a high-speed train entering tunnel

  • Rohit Sankaran Iyer
  • Dong Hyeon Kim
  • Heuy Dong Kim
Article
  • 4 Downloads

Abstract

Tunnel wave produced by an entering high-speed train has always been one of the most prominent problems in the field of aeroacoustics. These waves are formed at the entrance of the tunnel and propagate ahead of the train at the local speed of sound. The formation process of the first of the successive compression wave at the entrance decides the nature and intensity of the subsequent waves. Thus, to visualize and understand the formation process; a numerical study has been conducted using commercial computational fluid dynamics (CFD) solver FLUENT 17.1. The dynamic mesh update techniques have been implemented to update the stationary domains as the train moves inside it. Pressure inside the tunnel is measured at distinct points to study the changes in the intensity of the compression wave. The flow physics has been comprehended using pressure plots and contours.

Keywords

Compressible flow Dynamic mesh Entry compression wave High-speed train Unsteady flow 

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Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Rohit Sankaran Iyer
    • 1
  • Dong Hyeon Kim
    • 2
  • Heuy Dong Kim
    • 1
  1. 1.Gas Dynamics Laboratory, Department of Mechanical EngineeringAndong National UniversityAndongKorea
  2. 2.Hyper Tube Express (HTX) Research TeamKorea Railroad Research Institute (KRRI)Gyeonggi-doKorea

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