Enhancing Effect of Leeward Side Deflector on High-Speed Trains Aerodynamic Performance Under Crosswinds

Zheng Wei Chen, Guang Zhi Zeng, Zhan Hao Guo

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

To enhance the aerodynamic performance of high-speed trains in crosswinds, the aerodynamic forces and flow structures of the high-speed train with the deflector are investigated in this work, while the influence of deflectors on the train’s leeward side in various positions on the train’s aerodynamic performance is also compared. The results show that the deflector configured on the leeward side of the train has a notable effect on reducing the rolling moment coefficient (CMx), as compared to the case without a deflector, resulting in a decrement of 4.39%, 11.66%, and 19.80% at position A, position B and position C, respectively. The flow structures around the train further reveal that the deflector plate inhibits the winding and acceleration of vortexes formed in the leeward side of the train and weakens the concentrated as well as strong energy of the vortices, compared to the case without deflector, and therefore leading to an improvement in the train's aerodynamic performance in crosswind environments.

Original languageEnglish
Title of host publicationComputational and Experimental Simulations in Engineering - Proceedings of ICCES 2023—Volume 2
EditorsShaofan Li
PublisherSpringer Science and Business Media B.V.
Pages425-435
Number of pages11
ISBN (Print)9783031429866
DOIs
Publication statusPublished - 2024
Event29th International Conference on Computational and Experimental Engineering and Sciences, ICCES 2023 - Shenzhen, China
Duration: 26 May 202329 May 2023

Publication series

NameMechanisms and Machine Science
Volume145
ISSN (Print)2211-0984
ISSN (Electronic)2211-0992

Conference

Conference29th International Conference on Computational and Experimental Engineering and Sciences, ICCES 2023
Country/TerritoryChina
CityShenzhen
Period26/05/2329/05/23

Keywords

  • Aerodynamic performance
  • CFD
  • Crosswind environment
  • Deflector
  • High-speed train

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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