不同侧偏角下跨坐式单轨列车侧向气动特性分析  

Analysis on Lateral Aerodynamic Characteristics of Straddle-type Monorail Vehicle under Different Side Slip Angles

作　　者：杜子学[1] 刘博[1] 

机构地区：[1]重庆交通大学机电与汽车工程学院,重庆400074

出　　处：《铁道机车车辆》2010年第5期72-76,共5页Railway Locomotive & Car

基　　金：国家科技支撑计划项目(2007BAG06B01)

摘　　要：侧向气动特性在很大程度上影响着跨坐式单轨车的运行安全性。基于CFD方法对不同侧偏角影响下的某跨坐式单轨列车侧向气动特性进行模拟分析。通过比较分析不同方案下的侧向气动力计算结果及列车周围流场结构,得出随侧偏角的增加跨坐式单轨列车侧向气动力逐渐增大,头车受到的侧向力和侧倾力矩最大,因而侧风对头车的运行安全性影响最大的结论。Running safety of straddle-type monorail vehicle is affected largely by lateral aerodynamic characteristics.Based on CFD method,lateral aerodynamic characteristics of monorail vehicle under different side slip angles are simulated and analyzed.By comparing calculation results of lateral aerodynamic characteristics under different programs and analyzing the structure of external flow field around monorail vehicle,the achievements can be concluded that lateral aerodynamics of straddle-type monorail vehicle is increasing with the increase of side slip angle,as lateral force and listed moment on the head car are the largest,running safety of the head is influenced mostly by the cross-wind.

关 键 词：跨坐式单轨车 侧向气动特性 数值模拟 侧倾力矩 

分 类 号：U232[交通运输工程—道路与铁道工程]