Effect of Railway Spacing on Aerodynamic Performance of 600 km/h Maglev Trains Passing Each Other  

作　　者：Bailong Sun Tian Li Deng Qin Yan Li 

机构地区：[1]State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu,610031,China [2]Southwest Jiaotong University Chengdu Design Institute Co.,Ltd.,Southwest Jiaotong University,Chengdu,610031,China

出　　处：《Fluid Dynamics & Materials Processing》2025年第2期371-385,共15页流体力学与材料加工(英文)

基　　金：supported by the National Natural Science Foundation of China(12372049);Fundamental Research Funds for the Central Universities(2682023ZTPY036);Research and Development Project of JDD For HTS Maglev Transportation System(JDDKYCF2024002).

摘　　要：High-speed maglev trains(HSMTs)can run at high running speeds due to their unique design.The pressure waves that these trains generate while passing each other are therefore very intense,and can even have safety implications.In order to reduce the transient impact of such waves,the standard k-ε turbulence model is used in this work to assess the effect of railway spacing on the aerodynamic loads,pressure and surrounding flow field of 600 km/h maglev trains passing each other in open air.The sliding mesh technique is used to determine the relative motion between the considered trains.The results show that the surface pressure is approximately linearly correlated with the square of the speed while the amplitude of the pressure wave on the train surface,side force,and rolling moment all have negative exponential relationships with the railway spacing.

关 键 词：Railway spacing maglev train aerodynamic numerical simulation two trains passing each other 

分 类 号：O35[理学—流体力学]