Wind and Structures

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2D and 3D numerical and experimental analyses of the aerodynamic effects of air fences on a high-speed train

  • Mohebbi, Masoud (Center of Excellence in Railway Transportation, School of Railway Engineering, Iran University of Science and Technology) ;
  • Rezvani, Mohammad Ali (Center of Excellence in Railway Transportation, School of Railway Engineering, Iran University of Science and Technology)
  • Received : 2019.08.17
  • Accepted : 2021.04.01
  • Published : 2021.06.25
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Abstract

This perusal surveys the design criteria indispensable for fences that are installed alongside the high-speed railway tracks to protect the passing high-speed rolling stock under strong side winds. Using a numerical code based on Lattice Boltzmann Method (LBM) it is attempted to initially investigate the airflow behavior behind the fences. A variety of geometries for air fences in a two-dimensional space are compared. A wind tunnel test is performed to verify the numerical results. The three-dimensional flow patterns around the German Intercity Express (ICE3) high-speed train with and without the air fences are numerically examined to be more realistic. It is found that the presence of the fences has a significant impact on decreasing the intensity of the airflow above the train. The edges on the top of the fences cause more reduction in the velocity of air flowing above the train.

Keywords

Acknowledgement

This research was supported by the office for "National Master Plan for High-Speed Trains" at Iran University of Science and Technology. The authors are grateful for the support awarded. Gratitude is also due to Professor Zhiwei Hu from the University of Southampton for valuable discussion and comments during the course of this research.

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