The heat dissipation capability of brake disc is an important performance index to evaluate its per-formance,and the structure of heat dissipation rib is the key factor to affect the heat dissipation characteristic of ventilated brake disc.In order to solve the heat dissipation problem of brake disc under emergency braking condition,the heat dissipation characteristics of a ventilated brake disc are studied by using computational flu-id dynamics analysis method.The velocity field and convection heat transfer in the inner flow channel of the brake disc are evaluated.On this basis,Brinkman equation topology optimization coupled by N-S equation and Darcy's law is adopted to achieve the optimization goal of improving the heat dissipation capacity of the brake disc.The results show that the heat dissipation of the optimized model is increased by 13.46％in the whole braking condition.Therefore,it is of great significance to use topology optimization to design the cooling ribs of the brake disc.
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