高架桥高度对高速列车气动特性的影响  

Effect of the Height of Viaduct on the Aerodynamic Performance of High Speed Trains

作　　者：罗建斌[1] 胡爱军[2] 

机构地区：[1]广西工学院汽车工程系,广西柳州545006 [2]河南理工大学机械与动力工程学院,河南焦作454000

出　　处：《铁道车辆》2012年第6期5-10,47,共6页Rolling Stock

基　　金：河南省教育厅自然科学研究计划(2011A460006)

摘　　要：文章采用计算流体力学方法,针对高架桥高度变化对列车气动特性的影响进行了研究。结果表明,随着高架桥高度的增加,头车的倾覆力矩系数略微增大,而中间车的倾覆力矩系数逐渐减小,尾车的倾覆力矩系数基本不变。高架桥高度达到15m后,列车的气动六分力基本不随高架桥高度的增加而变化。With the method of computational fluid dynamics,research is made for the effect of height changes of viaduct on the aerodynamic performance of trains.The result of research shows that with the increase of height of the viaduct,the overturning moment coefficient of the head car will increase slightly,the overturning moment coefficient of the middle car will decrease gradually,and the overturning moment coefficient of the last car will remain basically unchanged.When the height of the viaduct reaches 15 m,the aerodynamic six-component force of the train will basically not change with the increase of the height of the viaduct.

关 键 词：高架桥 高速列车 横向风 气动特性 数值模拟 

分 类 号：U270.1[机械工程—车辆工程]