风雪环境高速列车转向架区域积雪问题研究与优化  

Research and Optimization of Snowpack in High-speed Bogie Areain Snowstorm Environment

作　　者：聂建 于培师 赵军华 赵凡[2] NIE Jian;YU Peishi;ZHAO Junhua;ZHAO Fan(College of Mechanical Engineering,Jiangnan University,Wuxi 214122,China;China Aerodynamics Research and Development Center,Mianyang 621050,China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]中国空气动力研究与发展中心,四川绵阳621050

出　　处：《机械制造与自动化》2024年第6期190-195,共6页Machine Building & Automation

基　　金：国家自然科学基金项目(11972171);中国博士后科学基金项目(2018M630513);国家数值风洞工程(NNW)。

摘　　要：基于Realizable k-epsilon湍流模型和离散相模型,对100 m/s(高铁速度360 km/h)运行车速条件下,高速列车转向架区域空气流场变化、积雪问题和防积雪优化进行数值计算和分析。研究结果表明:转向架区域内存在大量低速涡流,这些低速涡流周围各部件上容易形成积雪;通过设计并加装导流板和扰流板,能够抑制转向架下方气流的上扬和回流趋势,显著减少转向架积雪量;通过改进结构参数,发现导流板下斜距离为30 mm时,防雪性能最好,其可使转向架积雪量减少95.50%。Based on Realizable k-epsilon turbulence model and discrete phase model,numerical calculation and analysis of air flow field variation,snow accumulation and snow protection optimization in the bogie area of high-speed train at 100 m/s(high-speed rail at 360 km/h)were carried out.The results show that there are a lot of low-speed eddies in the bogie area,and the snow is easy to form on the parts around these low-speed eddies.By designing and installing the deflector and spoiler,the up-flow and back-flow trend of the air flow under the bogie is inhibited,and the snow accumulation of the bogie is reduced significantly.With the improved structure parameters,it is found that the deflector with a downslope distance of 30 mm has the best snow protection performance,which can reduce the snow amount of the bogie by 95.50%.

关 键 词：风雪流 转向架 临界捕获角度 临界剪切速度 导流板 

分 类 号：U292.9[交通运输工程—交通运输规划与管理]