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

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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.

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Authors and Affiliations

  1. Gas Dynamics Laboratory, Department of Mechanical Engineering, Andong National University, Andong, 760-749, Korea

    Rohit Sankaran Iyer & Heuy Dong Kim

  2. Hyper Tube Express (HTX) Research Team, Korea Railroad Research Institute (KRRI), Gyeonggi-do, 360-1, Korea

    Dong Hyeon Kim

Authors
  1. Rohit Sankaran Iyer
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  2. Dong Hyeon Kim
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  3. Heuy Dong Kim
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Correspondence to Heuy Dong Kim.

Additional information

Recommended by Associate Editor Seongwon Kang

Heuy Dong Kim received his B.S. and M.S. degrees from Kyungpook National University, Korea in 1986 and 1988. He then received his Ph.D. from Kyushu University, Japan in 1991. Currently, Prof. Kim is a full time Professor in Andong National University, Korea. His research interests include High-speed trains, Scramjet, Shock tube studies, Blast wave phenomena, Aerodynamic noises and Supersonic wind tunnels.

Rohit Sankaran Iyer received his B.E. degree in mechanical engineering from Mumbai University, India in 2011. He obtained his M.Tech. degree from Amrita University, India in 2016. Currently, he is pursuing his doctoral studies at Andong National University, Korea under Prof. Heuy Dong Kim. His research interests include High-speed trains, Turbo machinery, Shock to boundary layer interactions and Aero-acoustics of ground vehicles.

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Iyer, R.S., Kim, D.H. & Kim, H.D. Prediction of entry compression waves induced by a high-speed train entering tunnel. J Mech Sci Technol 32, 5285–5292 (2018). https://doi.org/10.1007/s12206-018-1027-6

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  • DOI: https://doi.org/10.1007/s12206-018-1027-6

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