Numerical Research Of Several Aerodynamical Problems On Maglev Vehicle

Based on viscous, stable and impressible Navier-Stokes equation and k-s turbulent model, the aerodynamic characteristics and the fluid field around the maglev vehicle are simulated by means of the finite element analysis software ANSYS.The two-dimensional maglev vehicle model is built with consideration of in-ground effect and out-ground effect. Then the distribution of surface pressure and the aerodynamic drag of maglev vehicle are numerically simulated for the vehicle with three different heads and tails under three different running speed. The side force, lift force and capsizing torques under the natural crosswind speed distribution are analyzed for the maglev vehicle traveling on the different high-support guideway, and their influences on the vehicle are also discussed. The three-dimensional maglev vehicle model is proposed, and the aerodynamic drag, lift and pitching moment of the maglev vehicle at various running speed are calculated for three different air gap beneath the vehicle body and the ground. The fluid field near the tail of the vehicle is simulated. Besides, the aerodynamic drags of maglev vehicle out or in tunnel are analyzed comparatively, and the influences of different vehicle speed, blockage and the length of vehicle on the aerodynamic drag are also studied.