机械科学与技术2018，Vol.37Issue(6)：937-940,4.DOI:10.13433/j.cnki.1003-8728.2018.0618
高速列车通风式制动盘的散热特性分析
Analysis of Heat Dissipation Performance for Ventilated Brake Disc in High Speed Train
摘要
Abstract
Heat dissipation performance for ventilated brake disc plays an important role in improving brake performance,and ribs structure is a key factor that influence on heat dissipation performance for ventilated brake disc.In this paper,the emergency braking condition was considered,and the computational fluid dynamics (CFD) method was applied to analyzethe brake disc which had four different ribs structure,including radial rib structure (Z-type),arc rib structure (A-type) rectangular rib structure (R-type) and trapezoidal rib structure (T-type).The temperature distribution,average convective heat transfer coefficient and total heat flux were studied on the brake disc.The results showed that the A-type brake disc had the better heat dissipation performance among the four kinds of different ribs structure;comparing with the Z-type brake disc,the A-type brake disc had the more uniform temperature distribution,in which the temperature fell 7.3％,higher average convective heat transfer coefficient and total heat flux improved 32.3％.Hence,the A-type rib structure could effectively improve the heat dissipation performance for ventilated brake disc.关键词
温度分布/对流换热系数/总热流量/散热特性Key words
temperature distribution/convective heat transfer coefficient/total heat flux/heat dissipation performance分类
交通工程引用本文复制引用
刘静娟,刘莹,康光林,韩委委..高速列车通风式制动盘的散热特性分析[J].机械科学与技术,2018,37(6):937-940,4.基金项目
江西省科技合作计划项目(2014BDH80021)与江西省精密驱动与控制重点实验室开放基金项目(PLPDC-KFKT-201605)资助 （2014BDH80021）
