Study on the Influence of the Presence of the Wind Barrier on the Aerodynamic Performance of Maglev Train

Abstract

The aerodynamic performance and operational stability of the high-speed maglev train are affected under the windy environment. In order to make the train safe operation, it is an effective measure to install a wind barrier along the route. Based on three-dimensional, unsteady, N  S incompressible equations and standard k ï€­ï¥ two-equation models, the aerodynamic performance of TR08 -type maglev train before and after installation of wind barrier is simulated numerically under the crosswind. The flow field structure around the train, the surface pressure of the train and the aerodynamic action coefficient were studied. And the difference of the aerodynamic performance of the maglev train before and after the installation of the wind barrier was obtained. Research indicates that the numerical results were in agreement with the experimental data and the deviation between them was below 10%. After installation height of 4.037m wind barrier, the maximum positive pressure on the train surface increases, which is increased by 5%. while the maximum negative pressure of the train surface reduces by 72%. The drag coefficient of the head car increases. The tail drag coefficient decreases. The lateral force coefficient of the head and tail cars is reduced.