The flow field of a high-speed train pantograph system equipped with different types of fairings was simulated using the Reynolds-Averaged Navier-Stokes model,to study the aerodynamic impacts of four different fairing structures on the pantograph at multiple speeds.The variations of streamline,pressure field,velocity field,drag coefficient,lift coefficient and aerodynamic uplift force were compared and analyzed.The results show that fairing devices can have sig-nificant impacts on the pantograph aerodynamics.Fairings will change the surface pressure of the pantograph by altering the flow direction and velocity,reducing the aerodynamic drag and lift of the pantograph.The variations in structural de-sign of fairings bring different aerodynamic impacts on the pantograph.Due to significant aerodynamic loads subjected to the fairings,the total aerodynamic drag and lift of the combined fairing and pantograph system may be increased dramat-ically than pantograph alone.Fairings can significantly change the aerodynamic uplift of the pantograph,and the same type of fairing may have different effects on the aerodynamic uplift.
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