摘要
建立了横风环境中高速列车运行于复线路堤上的三维空气动力学模型,开展了路堤高度和列车在复线路堤上的位置对高速列车气动性能影响的数值计算与对比分析。结果表明,路堤上列车周围的气流流速大于平地上的气流流速,导致路堤上列车气动性能较平地上恶劣;路堤高度和横风速度对高速列车在下风线上和上风线上气动性能的差异有重要影响;列车在下风线上运行比在上风线上运行更容易发生倾覆。
The three-dimensional aerodynamics model of the high speed trains running on double-track embankment in the cross wind circumstances is set up.The digital calculation and comparison analysis of the effect of embankment height and train position on the double-track embankment on the aerodynamic performance of high speed trains are developed.The result shows that the air flow speed around the train on the embankment is faster than the air flow speed on ground.causing the aerodynamic performance of trains on embankment to be worse than that on ground.The embankment height and the cross wind speed have an important effect on the difference of aerodynamic performances of high speed trains on windward track and the leeward track;the train is more likely to overturn while running on leeward track than running on windward track.
出处
《铁道车辆》
北大核心
2011年第11期1-5,47,共5页
Rolling Stock
基金
国家重点基础研究发展计划(973计划)课题(2007CB714706)
国家自然科学基金项目(50823004)
国家科技支撑计划项目(2009BAG12A01-B02-1)
关键词
高速列车
复线路堤
气动性能
横风
high speed train
double-track embankment
pneumatic performance
cross wind
