Numerical Analysis of Aerodynamic Force in Longitudinal and Vertical Direction for High-speed Maglev Train

In this paper, the aerodynamic force and moment of high-speed magnetically levitated (maglev) train against longitudinal wind is studied by numerical analysis method. Based on the 3D, viscosity, stable and incompressible Navier-Stokes equations and two-equation k～eturbulent model, the aerodynamic drag, lift and pitching moment of high speed maglev trains in 20 working conditions at different running speeds are calculated with finite volume method. The influence of different air clearance beneath the train body on these aerodynamic forces is analyzed and the aerodynamic features of the maglev train and the wheel/rail train compared. The calculation result shows that the influence of different air clearance beneath train body on aerodynamic drag is quite limited, but its effect on the aerodynamic lift is fairly strong. The aerodynamic drag, lift and pitching moment of the maglev train increase with the train speed. However, the magnitude of the increase varies with different calculation models.