Fluid topology optimization for heat dissipation of Ventilated brake discs

Passenger car ventilated brake disc is a rotating structure, which has a similar motion to impeller machinery and similar performance indexes to devices such as radiators. The optimization of the heat dissipation performance of a ventilated brake disc is a complex problem that includes fluids, solids, rotational motion, heat and friction. To address this problem, this paper built a brake disc heat dissipation simulation model based on the wind tunnel test of a MPV model with constant speed heat dissipation, compared the advantages and disadvantages of the two preconfigured discs; analyzed the sensitivity of each design parameter of the brake disc blade, and introduced the method of topology optimization in the optimization of the brake disc heat dissipation performance. The topology optimization method was demonstrated to be feasible to be applied to the complex system of brake disc thermal simulation, and through this, a brake disc blade with a special shape was obtained, and the reason for the good thermal performance of this blade is analyzed. Due to its suitable inlet angle and the constriction port structure at the end, the optimized brake disc obtains a better heat dissipation effect by suppression of separation and improving and pressure in the flow channel without sacrificing the mass flow rate.