空气动力学学报2026，Vol.44Issue(3)：11-21,11.DOI:10.7638/kqdlxxb-2025.0165
开槽轨道对高速磁浮列车气动特性的影响
Influence of slotted track on aerodynamic characteristics of high-speed maglev train
刘锋 1岳思 1吴晓龙 1李潇 1陶羽 2杨明智2
作者信息
- 1. 中铁第四勘察设计院集团有限公司,武汉 430063
- 2. 中南大学 轨道交通安全教育部重点实验室,长沙 410075
- 折叠
摘要
Abstract
The interaction between the underbody flow of a high-speed maglev train and the track structure at 600 km/h results in a non-uniform lift distribution,substantially complicating suspension control and introducing safety risks.To address this issue,this study investigates a three-car formation using a high-precision numerical approach based on the compressible SST k-ω IDDES turbulence model.The effects of slotted track width(320-1280 mm)on aerodynamic characteristics and flow structures are systematically examined,with wind tunnel tests validating the numerical model.Results show that slotted track width critically governs the pressure distribution,velocity field,and aerodynamic forces on the train underside.As slot width increases,the positive pressure zone beneath the leading car contracts,reducing its lift;conversely,the negative pressure zone under the trailing car weakens while the positive pressure region near the skid's windward side expands and intensifies,increasing trailing car lift.Flow field analysis indicates that the slot-induced modifications to the train-track gap flow enhance the airflow rate and high-speed flow coverage,driving changes in pressure distribution and aerodynamic forces.Comprehensive assessment reveals that at a slot width of 960 mm,total aerodynamic drag is minimized,leading to a 10.9%reduction(22.26 kN)in leading car lift and a 15.8%increase(32.26 kN)in trailing car lift compared to the non-slotted track,thereby significantly reducing the lift difference between cars and achieving optimal aerodynamic balance.This study provides a theoretical foundation for enhancing the stability and safety of high-speed maglev trains via passive flow control through slotted track design.关键词
列车空气动力学/高速磁浮列车/轨道开槽/升力控制/数值仿真/流动控制Key words
train aerodynamics/high-speed maglev train/slotted track/lift control/numerical simulation/flow control分类
交通工程引用本文复制引用
刘锋,岳思,吴晓龙,李潇,陶羽,杨明智..开槽轨道对高速磁浮列车气动特性的影响[J].空气动力学学报,2026,44(3):11-21,11.
