摘要
采用三维定常、不可压N-S方程和k-ε双方程湍流模型,利用有限体积法对不同路况下运行的列车进行数值模拟计算,分析车速、风速及路堤高度对机车气动性能的影响。研究结果表明:路堤高度的升高、车速的变大、横风风速的增大、横风风向角的变大都会使得高速机车的气动力变大,但由于本文中车速相差不大,因此,车速的变化对高速机车气动力的影响相对其余几种因素较小。
Based on 3D steady and incompressible N-S equation and k-ε turbulent model,the aerodynamic performance of trains running under different situations was simulated by finite volume method.The influence of locomotive speed,wind speed and embankment height on the aerodynamic performance of high-speed locomotive was analyzed.The results show that the aerodynamic forces increase with the increase of embankment height,train speed,crosswind speed and crosswind angle.Because the range of train speed in this paper is small,its influence of high-speed locomotive on the aerodynamic performance is less than the other factors.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2012年第2期84-88,共5页
Journal of Railway Science and Engineering
基金
中南大学前沿研究计划中南大学博士后基金资助项目(2010QZ20D020)
关键词
机车
横风
气动性能
数值模拟
locomotive
crosswind
aerodynamic performance
numerical simulation
