摘要
基于空气动力学数值模拟方法,针对列车不同部位的转向架和转向架结构表面的气动阻力分布进行分析,对高速动车组列车整车气动效应进行数值仿真。研究结果表明:转向架流场区域在靠近来流端的上部会形成部分死水区,该区域流场与外部质量交换较小,转向架结构表面在来流方向上游会形成一个正压区,在下游方向的转向架结构表面会形成小范围的负压区。列车头车转向架气动阻力明显高于中间车和尾车,其中列车头车I位转向架受到的气动阻力最大,其次是头车II位端转向架,列车的中间车和尾车转向架阻力分布较为均匀,均为头车转向架阻力的60%左右。
This study focused on the aerodynamic drag characteristic of bogie structure in high speed trains. A full train aerodynamic simulation was conducted using numerical simulation approach. The results show that the flow field around bogie tends to form a dead water zone in the top upstream region, this region has a low mass exchange with outer flow field. The upstream direction of bogie structure tends to form a positive pressure zone while the downstream direction of bogie structure tends to form a negative pressure zone, both of these zones contribute to the aerodynamic drag of the bogie. It is shown that the aerodynamic drag of head car bogie is significantly higher than that of middle cars as well as tail car, in which the position I bogie bears the highest aerodynamic drag, followed by the position II bogie on the head car. The aerodynamic drag on middle car and tail car bogies are relatively uniform, which takes about 60% of the head car bogie drag.
作者
苑玉展
尚克明
杜健
钱博森
伍钒
李雪亮
YUAN Yuzhan;SHANG Keming;DU Jian;QIAN Bosen;WU Fan;LI Xueliang(CRRC Qingdao Sifang Co.,Ltd,Qingdao 266111,China;School of Traffic&Transportation Engineering,Central South University,Changsha 410075,China;Key Laboratory of Traffic Safety on Track of the Ministry of Education,Changsha 410075,China)
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2019年第12期2921-2927,共7页
Journal of Railway Science and Engineering
基金
国家“十三五”重点研发计划项目(2017YFB1201103)
关键词
高速列车
转向架
气动阻力
数值仿真
high-speed train
bogie
aerodynamic drag
numerical simulation
