速度400 km/h高速列车风阻制动装置布置的数值研究  

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

作　　者：谢红太 王红[1] XIE Hongtai;WANG Hong(School of Mechatronic Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Railway Planning and Design Institute,China Design Group Co.,Ltd.,Nanjing 210014,China)

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070 [2]华设设计集团股份有限公司铁道规划设计研究院,江苏南京210014

出　　处：《铁道学报》2023年第10期42-51,共10页Journal of the China Railway Society

基　　金：甘肃省重点研发计划(23YFGA0040)。

摘　　要：基于三维定常可压的黏性流场N-S及k-ε双方程模型,以CR400AF平台动车组流线型外观为参考,装配新型“蝶形”风阻制动装置,模拟计算高速列车风阻制动装置不同布置状态时的气动特性,给出单排及多排制动风翼板布置的确定方法及最优方案。研究表明:在高速列车头车司机室流线型尾端连接处后2~5 m范围内设置安装首排制动风翼板,可有效为高速列车高速制动阶段提供较为可靠稳定的制动力,同时对首排制动风翼板工作时流固耦合及振动特性进行评估和说明;研究提出以列车制动需求为目标,纵向制动风翼板最优布置范围逐渐缩减的方式,通过计算流体动力学的方法确定制动风翼板设置位置及布置排数选择的研究方法,给出3节编组高速列车2排及3排制动风翼板最优布置方案。Based on the three-dimensional steady and incompressible viscous flow field N-S and k-εtwo-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.

关 键 词：高速列车 空气动力学 计算流体力学 风阻制动 制动风翼板 

分 类 号：U266.2[机械工程—车辆工程]