Study on Aerodynamic Performance of Maglev Train Passing by Each Other at Constant Speed

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	Study on Aerodynamic Performance of Maglev Train Passing by Each Other at Constant Speed
	Yu M(于淼); Zhu BN(祝百年); Liang YT(梁永廷); Hao ZZ(郝占宙); Yin B(银波)
发表期刊	力学研究
	2021-04-12
期号	2
摘要	As the next generation of high-speed rail transportation, the high-speed maglev train has a design speed of 600 km/h and a Mach number of about 0.49. The complex aerodynamic effects caused by such a high speed have a significant impact on the stability and safety of train operation. This paper uses numerical simulation to study the aerodynamic drag, lift, and side force acting on different carriages of the three-carriage maglev trains when they passing by each other at the same speed. In this study, the sliding mesh method and the k-ε turbulence model are used, and a user-defined function is compiled to determine the moving speed of the maglev train. The results show that the aerodynamic lift has very strong instability during the operation of the train, which is the main factor affecting the stable operation of the train. Its oscillation is mainly derived from the unstable lift at the bottom of the train, and the aerodynamic lift on the tail car is much larger than the head car. When two cars passing by each other, the aerodynamic drag of the train does not change synchronously with the aerodynamic lift and side force, and the influence on the lower part of the aerodynamic lift is greater than the influence on the upper part of the aerodynamic lift.
关键词	磁悬浮列车列车交会气动力气动升力振荡 Maglev Train Train Passing by Each Other Aerodynamic Force Aerodynamic Lift Oscillation
语种	中文
力学所作者排名	3+
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/88518
专题	流固耦合系统力学重点实验室
作者单位	1.中车唐山机车车辆有限公司，河北唐山 2.中国科学院力学研究所，北京
推荐引用方式 GB/T 7714	Yu M,Zhu BN,Liang YT,et al. Study on Aerodynamic Performance of Maglev Train Passing by Each Other at Constant Speed[J]. 力学研究,2021,2,.
APA	于淼,祝百年,梁永廷,郝占宙,&银波.(2021).Study on Aerodynamic Performance of Maglev Train Passing by Each Other at Constant Speed.力学研究(2).
MLA	于淼,et al."Study on Aerodynamic Performance of Maglev Train Passing by Each Other at Constant Speed".力学研究 .2(2021).

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