Aerodynamic performance analysis of trains on slope topography under crosswinds

Tang hong Liu, Xin chao Su, Jie Zhang, Zheng wei Chen, Xi sai Zhou

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)

Abstract

This work used the computational fluid dynamics method combined with full-scale train tests to analyze the train aerodynamic performance on special slope topography. Results show that with the increment in the slope gradient, the aerodynamic forces and moment increase sharply. Compared with the flat ground condition, the lateral force, lift force, and overturning moment of the train on the first line increase by 153.2%, 53.4% and 124.7%, respectively, under the slope gradient of 20°. However, with the increment of the windward side’s depth, the windbreak effect is improved obviously. When the depth is equal to 10 m, compared with the 0 m, the lateral force, lift force and overturning moment of the train on the first line decrease by 70.9%, 77.0% and 70.6%, respectively. Through analyzing the influence of slope parameters on the aerodynamic performance of the train, the relationships among them are established. All these will provide a basic reference for enhancing train aerodynamic performances under different slope conditions and achieve reasonable train speeds for the operation safety in different wind environments.

Original languageEnglish
Pages (from-to)2419-2428
Number of pages10
JournalJournal of Central South University
Volume23
Issue number9
DOIs
Publication statusPublished - 1 Sept 2016
Externally publishedYes

Keywords

  • aerodynamic performance
  • slope topography
  • train
  • wind

ASJC Scopus subject areas

  • General Engineering
  • Metals and Alloys

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