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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第9卷    第2期    总第46期    2012年4月

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文章编号:1672-7029(2012)02-0084-05
横风作用下高速机车的气动性能
任鑫12,梁习锋12,杨明智12,李军产12

(1.中南大学轨道交通安全教育部重点实验室,湖南长沙410075;
2.中南大学交通运输工程学院,湖南长沙410075
)

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。

 

关键字: 机车; 横风; 气动性能; 数值模拟

Aerodynamic performance of high-speed locomotive under crosswind
REN Xin12,LIANG Xi-feng12,YANG Ming-zhi12,LI Jun-chan12 (

1.Key Laboratory of Traffic Safety on Track,Ministry of Education,Central South University,Changsha 410075,China;
2.School of Traffic & Transportation Engineering,Central South University,Changsha 410075,China

Abstract: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.

 

Key words: locomotive; crosswind; aerodynamic performance; numerical simulation

ISSN 1672-7029
CN 43-1423/U

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