Co-simulation on fluid-structure interaction of high-speed train based on Fluent and Simpack

A co-simulation method of a high-speed train fluid-structure interaction is presented based on the vehicle system dynamics and high-speed train aerodynamics.The high-speed train aerodynamics and dynamics were calculated by Fluent and Simpack respectively,the co-simulation was achieved by passing the aerodynamic parameters and attitude parameters in time.With this method,the fluid-structure dynamics of a high-speed train are simulated under the case that the velocity of crosswind is 10.7m/s and the running speed of train is 350km/h.The aerodynamics,attitude,safety and comfortable indexes of train are compared under the off-line simulation and the co-simulation.Considering the fluid-structure interaction,results show that there has significant influence on the head aerodynamics and attitude. Besides,the safety indexes of head are worse.