Investigation of aerodynamic behaviour of a high-speed train on different railway infrastructure scenarios under crosswind
Artikel i vetenskaplig tidskrift, 2022

The aerodynamic behaviour of a CRH high-speed train under three infrastructure scenarios (flat ground, embankment, and viaduct) in the presence of a crosswind was simulated using a 1/8th scaled train model with three cars and the IDDES framework. The time-averaged and instantaneous flow field around the model were examined. The employed numerical algorithm was verified through a wind tunnel test, and the grid and timestep resolution analyses were conducted to ensure the reliability of the data. It was noted that the flow around the rail line was different under different infrastructure scenarios, especially in the case of the embankment, which degraded the aerodynamic performance of the train under the crosswind. The flow around the train on the flat ground and viaduct was different, although the aerodynamic performance of the train was similar in both cases. Moreover, the viaduct accidents were noted …


Jiqiang Niu

Yingchao Zhang

Zhenwei Chen

Hong Kong Polytechnic University

Rui Li

Huadong Yao

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Wind and Structures, An International Journal

1226-6116 (ISSN)

Vol. 35 6 405-418

Strategiskt forskningsprojekt på Chalmers inom hydro- och aerodynamik

Stiftelsen Chalmers tekniska högskola, 2019-01-01 -- 2023-12-31.




Strömningsmekanik och akustik




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