高速列车同向并行运动的气动阻力数值仿真

Simulation in the Aerodynamic Drag of High-speed Train in Parallel Movement along Same Direction

文章采用流体力学数值计算软件FLUENT对我国某新型动车组的空气动力学性能进行了数值仿真。研究了不同速度下,两列高速列车明线同向并行运动时的气动阻力,并与单车明线的气动阻力进行了对比。结果表明,双车产生的气动阻力均大于单车时情况,随着速度的提高,气动阻力增幅加大。

A numerical simulation of aerodynamic characteristics of new model EMU is given, using The Computational Fluids Dynamics Software （FLUENT）. The effect of aerodynamic drag for two high-speed trains with different speed that are running parallel along the same direction is studied. The result was compared with the single train, The calculation results show that the aerodynamic drags of two trains is bigger than the same situation of single train, and with train speed is increasing, the difference of aerodynamic drags are more and more large.