中低速磁悬浮列车空气阻力计算  

Calculation of the Aerodynamic Drag for Middle-low Speed Maglev Train

作　　者：莫双鑫 刘少克[1] 

机构地区：[1]国防科学技术大学机电工程与自动化学院,湖南长沙410073

出　　处：《机车电传动》2015年第4期49-52,共4页Electric Drive for Locomotives

基　　金："十二五"国家科技支撑计划重点项目子课题(2012BAG07B01-01-04)

摘　　要：采用有限容积法,根据不可压缩粘性流体的Navier-Stokes方程和Spalart-Allmaras模型,对CMS-04中低速磁悬浮列车运行的外流场特性进行了计算分析,分别计算了不同速度下无横风和有横风条件下的气动阻力。根据数据拟合出无横风与有横风的空气阻力公式,详细分析了各公式之间的差异。研究表明,在横风条件下推导出的阻力公式能够较好地反映出阻力随风速、车速的变化,为中低速磁悬浮列车准确的牵引计算提供帮助。Based on Navier-Strokes equation of the incompressible viscous fluid and Spalart-Allmaras turbulence model, external flow field characteristics of the CMS-04 low speed maglev train were investigated using the finite volume method. The aerodynamic drag with and without the horizontal wind were calculated at different speeds, the drag equations were deduced by the data and the differences were analyzed particularly. It reports that the air drag＇s variations with the speed of the vehicle and the wind, can be provided for the calculation of the low-speed maglev vehicle traction.

关 键 词：中低速磁悬浮列车 数值计算 空气阻力公式 空气阻力 横风 

分 类 号：U292.917[交通运输工程—交通运输规划与管理]