路基表面锯齿结构对高速列车模型气动阻力的影响  

Influence of Saw-tooth Structure on Ballast Surface on Aerodynamic Dray of High Speed Train Model

作　　者：黄志祥[1] 朱任宇 黄汉杰[1] 陈立[1] Huang Zhixiang;Zhu Renyu;Huang Hanjie;Chen Li(China Aerodynamics Research and Development Center,Mianyang 621000,China)

机构地区：[1]中国空气动力研究与发展中心,四川绵阳621000

出　　处：《铁道车辆》2021年第5期1-6,共6页Rolling Stock

基　　金：国家铁路局技术标准项目(2018Z35)。

摘　　要：通过在平地路基表面安装锯齿结构,以研究锯齿形状和锯齿安装位置对1∶8的三节编组高速列车模型各节车厢和列车气动阻力的影响。研究结果表明,在路基前端和车头鼻尖处的路基表面安装锯齿结构,头车和列车的气动阻力将明显减小,且主要影响头车的气动阻力,对中间车和尾车气动阻力的影响效果依次减小。尺度更小的锯齿2比锯齿1使列车的气动阻力减小量更大。与无锯齿相比,2种尺度的锯齿在路基前端比车头鼻尖处对列车气动阻力的影响更大。Through the installation of saw-tooth structure on the surface of flat ballast,the influence of saw-tooth shape and saw-tooth installation position on the aerodynamic drag of each carbody and train in the 1∶8 scaled three-car high-speed train model was studied.The research results show that,the aerodynamic drag of the head car and the train will be significantly reduced by installing saw-tooth structure on the ballast surface at the front end of the ballast and the nose projection position of the head car.And it mainly affects the aerodynamic drag of the head car,the effect on the aerodynamic drag of the middle car and the tail car decreases in turn.Compared with saw-tooth 1,the saw-tooth 2 with smaller scale reduces the aerodynamic drag of the train more.Compared with no saw-tooth,the saw-tooth of the two scales has a greater influence on the aerodynamic drag of the train at the front of the ballast than at the nose projection position of the train head.

关 键 词：高速列车 气动阻力 锯齿结构 路基 风洞试验 

分 类 号：U211.74[交通运输工程—道路与铁道工程]