Numerical Study on Arrangement of Aerodynamic Braking Device for 400 km/h High-speed Train

被引：0
|
作者：
Xie H. [1 ,2 ]
Wang H. [1 ]
机构：
[1] School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou
[2] Railway Planning and Design Institute, China Design Group Co., Ltd., Nanjing
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2023年 / 45卷 / 10期
关键词：
aerodynamic brake; aerodynamics; braking wind wing plate; computational fluid dynamics; high-speed train;
D O I：
10.3969/j.issn.1001-8360.2023.10.005
中图分类号：
学科分类号：
摘要：
Based on the three-dimensional steady and incompressible viscous flow field N-S and k-ε two-equation model, the streamline appearance of the CR400AF platform-based EMU was used as the prototype, and the new “butterfly” aerodynamic braking device was assembled to simulate and calculate the aerodynamics of high-speed trains in different assembly and layout states. The determination method and the optimal scheme for the layout of the first row and multi-row brake wing panels were given. The study shows that the installation of the first row of braking wind wing panels within 2~ 5 m behind the streamlined end connection of the driver’s cab of the high-speed train can effectively provide a more reliable and stable braking force for the high-speed train during the high-speed braking stage. The fluid-structure coupling and vibration characteristics of the first-row brake wind wing panels were evaluated and explained. The study proposes a method of gradually reducing the optimal arrangement range of the longitudinal brake wing panels with the train braking demand as the target, through the calculation of fluid dynamics. The research method to determine the location of the brake wind wing panels and the selection of the number of rows is given by the method of learning, and the optimal layout range of the 2 rows and 3 rows of the brake wind wing panels for the 3-car high-speed train is given. © 2023 Science Press. All rights reserved.
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页码：42 / 51
页数：9
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