Aerodynamic shape optimization of windshields on freight high-speed trains with crosswind

被引：0
|
作者：
Miao X. [1 ,2 ]
Gao G. [3 ]
He K. [3 ]
Zhu B. [4 ]
Kong F. [4 ]
机构：
[1] College of Automobile and Machinery Engineering, Changsha University of Science and Technology, Changsha
[2] Key Laboratory of Safety Design and Reliability Technology for Engineering Vehicle, Changsha
[3] Key Laboratory of Traffic Safety on the Track of Ministry of Education, Central South University, Changsha
[4] Technical Research Center, CRRC Tangshan Co. Ltd., Tangshan
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2021年 / 52卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Aerodynamic performance; Crosswind; Freight high-speed train; Numerical simulation; Windshield;
D O I：
10.11817/j.issn.1672-7207.2021.04.030
中图分类号：
学科分类号：
摘要：
Three-dimensional numerical method was used to simulate the flow field around freight high-speed trains under strong crosswind. The influence of four kinds of windshields on the aerodynamic performance of freight high-speed trains was explored. The results show that the influence of windshields on the velocity, pressure and surface pressure is mainly reflected in the windshield area. The velocity, pressure and surface pressure in the full surrounding windshield area are more evenly distributed, which can make the whole train have less aerodynamic drag and lateral force with crosswind. After opening the top, bottom or even both of them, the flow around windshield area changes obviously, which leads to the increase of aerodynamic drag and lateral force of the whole train. The influence of the opening at bottom of windshield on the flow field and aerodynamic force is relatively small. Therefore, if it is necessary to open the windshield for maintenance, it is recommended to set the opening at the bottom of the windshield. © 2021, Central South University Press. All right reserved.
引用
收藏
页码：1337 / 1345
页数：8
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