风雨联合作用下高速列车受力数值模拟  

Simulation of the action effect of wind-driven rain on high-speed train

作　　者：敬俊娥[1] 高广军[2] 

机构地区：[1]南车青岛四方机车车辆股份有限公司,山东青岛266111 [2]中南大学轨道交通安全教育部重点实验室,湖南长沙410075

出　　处：《铁道科学与工程学报》2013年第3期99-102,共4页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51075401)

摘　　要：采用双方程湍流模型和离散相模型相结合的方法,对不同降雨强度、横风风速和车速下高速运动车辆周围的流场进行研究。研究结果表明:在横风作用下,下落的雨滴与高速运行的列车发生碰撞,雨滴飞溅、改变了车身表面的粗糙度和不平整性,导致车辆运行横向力、升力和倾覆力矩均随着车速、风速和降雨强度的增大逐渐变大;伴随着降雨过程的强横风作用,车辆所受的气动载荷与强横风的单独作用情况下相比稍微增加。k -ε double equation turbulent model and discrete phase model were used in the research of the effect of different rainfall intensities, different wind speeds and different train velocityies on the flow field around the vehicle. The results show that the rain drops under the effect of cross wind crash on to the surface of the carriage and then splash, which change the roughness and smoothness of the surface of the carriage, So it leads to that the side force, lift force and capsizing moment increase gradually with the increase of wind speed, train speed and rainfall intensity. The dynamic load on train when bearing strong wind and rainfall is a little bigger than that when bearing only strong wind load.

关 键 词：高速列车 风雨作用效应 离散相模型 数值模拟 

分 类 号：U271.91[机械工程—车辆工程]