Contribution of Suspension Bogies’ Aerodynamic Loads to the Dynamic Characteristics of a High-temperature Superconducting Maglev Train Running under Crosswind

Document Type : Regular Article

Authors

1 School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, China

2 State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031, China

3 State Key Laboratory of Mechanical Behavior and System, Shijiazhuang Tiedao University, Shijiazhuang 050043, China

10.47176/jafm.18.6.3084

Abstract

The suspension bogies at the bottom of the high-temperature superconducting pinning (HTS) maglev trains are critical components, responsible for levitation, guidance, shock absorption, etc. This research delves into the aerodynamic load features of the suspension bogies on HTS maglev trains when operating under various crosswind conditions. By employing the unsteady Reynolds-averaged Navier-Stokes (URANS) equations coupled with the shear stress transport (SST) k-ω turbulence model, we elucidate the dynamic impact of these aerodynamic loads on the vehicle's overall performance, thereby offering valuable insights into the structural design of the train. The accuracy of the numerical method was confirmed by using wind tunnel test data from the scaled ICE-2 model. Furthermore, by adopting a strategy of partitioning the aerodynamic load, the impact on the overall vehicle dynamics performance is analyzed, and the operational safety of the train under different crosswind scenarios is assessed with Multi-body Dynamic (MBD) simulations. The research results indicate that the first bogie at the bottom of the head car contributes the most to the unsteady fluctuations of the aerodynamic load. Additionally, the partitioned loading method has a significant impact on the simulation results, which can better assess the safety of the train's operation under crosswinds. The research findings can provide references for the system design and engineering application of the HTS maglev train.

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Main Subjects

References

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History

  • Received: 03 September 2024
  • Revised: 22 December 2024
  • Accepted: 06 January 2025
  • Available online: 30 March 2025

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