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Heat dissipation performance simulation on brake disk of high-speed train based on aerodynamics

WANG Yuguang;ZHOU Qian;QIAO Qingfeng;MA Lijun;CRRC Sifang Co.,Ltd.,Qingdao;  
The heat dissipation of the brake disk of a high-speed train is simulated by CFD method,and the average convective heat transfer coefficients of each part of the brake disk are calculated. Under the heat dissipation condition,the temperature field of the brake disk is simulated by sequential coupling method,the thermal load of complex hexagon shape is loaded,and the simulation results of the second braking temperature field is compared with the test results. The results show that,the simulation results are consistent with the test data in the cooling stage,and the maximum error of the temperature is less than 5% during the braking stage.
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