侧风作用下不同装载敞车气动性能研究
Study on Aerodynamic Performance of Gondola Cars with Different Loadings under Crosswind
谢雨江 1武振锋1
作者信息
- 1. 兰州交通大学机电工程学院,甘肃兰州 730070
- 折叠
摘要
针对不同装载情况的敞车,开展敞车在空载、半载、满载3种情况下气动性能的研究.研究结果表明:单节敞车气动力的变化规律与整车气动力的变化规律一致;空载敞车所受的气动阻力最大,半载敞车次之,满载敞车最小;满载敞车所受的气动升力最大,半载敞车次之,空载敞车最小;3种敞车所受的侧向力非常接近,最大差距仅为1.9％;空载敞车和半载敞车所受的气动力较为接近,而满载敞车与前两种车型有明显差距.
Abstract
According to the different loading conditions of gondola car,the aerodynamic performance of the gondola car under three conditions of empty-load,half-load and full-load was studied.The reserch results show that the change law of the aerodynamic force of a single gondola car is consistent with that of the whole vehicle,the aerodynamic drag of empty-load train is the largest,followed by half-load train,and full-load train is the least.The aerodynamic lift force of full-load train is the largest,half-load train comes to the second,and empty-load train is the least.The lateral forces of the three trains are very close with the biggest difference as merely 1.9％.The aerodynamic force of empty-load and half-load gondola car is relatively close,while full-load gondola car has a significant gap with the former two models.
关键词
铁路货运列车/装载/敞车/气动性能/数值模拟Key words
railway freight train/load/gondola car/aerodynamic performance/numerical simulation引用本文复制引用
基金项目
甘肃省科技厅重点研发计划项目(20YF3GA014)
出版年
2024
国家科技期刊平台
NSTL
万方数据