In this paper, the effect of strip spacing on the aerodynamic performance of a high-speed pantograph with a double-strip is numerically studied using a shear stress transport turbulence model. Seven different strip spacings varied from 100 to 700 mm are considered. The errors in pantograph resistance between numerical simulation and wind tunnel test are within 5% in both knuckle-downstream and knuckle-upstream operating conditions. The drag and lift forces of the strip increase with the strip spacing when the train’s running speed is 350 km/h. By considering the two strips individually, it is interesting to find that the lift force on the first strip tends to be stable as the spacing reaches up to 600 mm in both operating conditions, whereas the lift force on the second strip increases continuously with the spacing in the whole range of 100–700 mm. Furthermore, the aerodynamic coefficient of the strip is a nearly constant value at different running speeds, which increases with the strip spacing, suggesting that the relationship between the aerodynamic forces and the spacing of strips obtained in the current study can be extended to any speed level in the range of 200–350 km/h.

本文利用剪应力传递湍流模型数值研究了带间距对双带高速受电弓气动性能的影响。考虑了从 100 到 700 毫米不等的七种不同的带材间距。数值模拟与风洞试验的受电弓阻力误差在转向节下游和转向节上游工况下均在5%以内。当列车运行速度为 350 km/h 时，钢带的阻力和升力随着钢带间距的增加而增加。通过单独考虑两个带材，有趣的是发现在两种操作条件下，当间距达到 600 mm 时，第一个带材上的升力趋于稳定，而第二个带材上的升力随着间距不断增加在 100-700 毫米的整个范围内。