Simulation of Brake Disc Resistance Torque of High-speed Train Considering Air Flow Field

In order to study the flow field characteristics in the transfer rack area during the operation of high-speed train and the influence law on the wind resistance torque of brake disc, the train aerodynamic model is established, and the flow field of high-speed train under six working conditions of 200km-450km per hour is simulated. The calculation results show that the resistance and torque of the brake disc are directly proportional to the square of the speed, and the power consumption is directly proportional to the cubic of the speed. When the train runs at 450km / h, the maximum wind resistance torque of a single brake disc can reach 71.26Nm. The energy loss caused by the brake disc resistance torque accounts for 31.32% of the total power consumption of the bogie, which is 2.47 times of the contribution value of brake disc resistance power consumption.