Aerodynamic Analysis of Pressure Wave of High-Speed Maglev Vehicle Crossing: Modeling and Calculation

Abstract

When two maglev trains travel in opposite directions on two adjacent tracks, train crossingis inevitable. Especially when both trains run at full speed, the pressure wave formed by each otherwill have a significant impact on the structure of the vehicle. Therefore, it is important to understandthe pressure distribution on the body surface during the crossing to mitigate impact of the pressurewave. In this work, numerical simulation techniques are employed to reveal the nature of pressurewave during train crossing. Firstly, the aerodynamic load calculation model and the pressure wavecalculation model are established, based on the turbulence model and flow field control equation.Secondly, the governing equations are discretized together with determined correspondingboundary conditions, which leads to an effective numerical analysis method. Finally, thecorresponding aerodynamic analysis is carried out for the high-speed maglev test vehicle runningat speed 500 km/h on the open-air line. The simulation results reveal that the spot which sustainsthe most pressure fluctuation is at the widest part of the vehicle during the train crossing. This formsvaluable insights on the aerodynamic nature of high-speed maglev train and provides necessaryinputs to the structural design of the vehicle.