盘式制动器流固耦合传热仿真分析及试验研究

Simulation Analysis and Experiment Study of the Fluid- solid Coupled Heat Transfer of Disc Brake

流固耦合传热仿真分析重点在于计算流体力学(CFD)和固体传热有限元(FEA)。将制动器各个零件构成一个流固耦合传热系统进行研究,采用分区求解、边界耦合形式进行求解。此法将难以确认的单个零件传热外部边界转化为内部边界,计算时可只定义外部边界,更加切于实际便于计算。通过数据对比结果表明:仿真分析数据与试验测量结果相吻合。因而,采用此法模拟制动器的热传导和对流换热是切实可行的。

The fluid-solid coupled heat transfer analysis focus on computational fluid dynamics（ CFD）and solid heat transfer finite elements（ FEA）. The partition solving and boundary coupling are used to study a fluid-solid coupled heat transfer system which is formed by every part of brake. By this method,the outer and being difficult to identify borders of a single part heat transfer can be transformed into inner borders,it can only define the external borders for calculating,which is more practical and easier to calculate. Comparison between simulation and measurement data shows that the simulation data are in good agreement with experimental results. So,taking the coupling method to simulate brakes thermal conduction and heat convection is feasible.