Evaluation of active leeward side air-blowing layout on the lateral aerodynamic performance of high-speed trains in crosswinds environment: Sustainable and safe operation strategy

Zheng Wei Chen, Zi Jian Guo, Zheng Xin Che, Zun Di Huang, Yi Qing Ni, Su Mei Wang, Sha Huang, Zhi Wei Li, Qian Xuan Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

The lateral aerodynamic forces experienced by high-speed trains operating in crosswind environments affect trains' operating safety significantly. This paper used the Improved Detached Eddy Simulation (IDDES) method based on the Shear Stress Transport (SST) k-ω turbulence model to explore the mitigating effect of air-blowing at the leeward side of the train on the train's lateral aerodynamic forces. Different air-blowing positions and speeds were considered. The results indicate that the best mitigating effect can be achieved when simultaneously blowing air at the head, middle, and tail cars; in addition, when blowing air at the speed of 0.3 times of the resultant velocity, the rolling moment of the three cars reduced by 7.71%, 7.25%, and 25.46% respectively. Finally, the assessment of the mitigation efficiency was displayed to discuss the trade-off of rolling moment reduction and energy utilization rate for air-blowing. The research gives an insight into increasing the stability and safety of trains in crosswind based on active control, which can improve the safe operation threshold of trains.

Original languageEnglish
Article number105695
JournalJournal of Wind Engineering and Industrial Aerodynamics
Volume247
DOIs
Publication statusPublished - Apr 2024

Keywords

  • Aerodynamic lateral force
  • Air-blowing
  • Crosswind
  • High-speed train
  • Mitigation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Renewable Energy, Sustainability and the Environment
  • Mechanical Engineering

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