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以世界上首条商业运行的上海高速磁浮列车TR08为研究对象,基于粘性流体力学理论,按三维可压缩粘性流对具有流线型头部形状的TR08列车以及根据一定规律设计出的4种新头型列车周围流场进行了数值模拟.通过对这5种不同头型列车的模拟结果进行对比分析,得出了流线型头部外形对气动性能影响的规律:随着流线型头部长度增加(其他条件相同),列车气动阻力和升力降低;在头部流线型长度相当的情况下,纵剖面轮廓线上凸的头车气动阻力比下凹的小,而尾车气动阻力大;中间车阻力变化不大,尾车升力大于头车;就整车升力而言,纵剖面轮廓线上凸的气动升力大于下凹的.
Based on the theory of viscous fluid mechanics, the TR08 train with streamlined head shape and the four new head forms designed according to a certain rule are studied in the world’s first commercially operated Shanghai high-speed maglev TR08. Based on the viscous fluid dynamics theory, The flow around the train is numerically simulated.By comparing and analyzing the simulation results of the five different types of frontal trains, the influence of streamlined head shape on the aerodynamic performance is obtained: as the length of the streamlined head increases (other conditions are the same ), The aerodynamic drag and lift of the train are reduced; in the case of the same head streamline length, the aerodynamic drag of the convex head car on the profile of the longitudinal section is smaller than that on the concave and the aerodynamic drag of the tail car is large; The tail lift is greater than the head carriage; in terms of vehicle lift, the convex aerodynamic lift on the profile of the longitudinal profile is greater than the undercut.