[생산기술부문] 자동차용 디스크 브레이크의 열유동 및 열변형 해석

Using CFD airflow and temperature distribution around the ventilated disc brakes were calculated in the case of rapid braking of a car. Exporting grid system and value of temperature of the rotors to the FEM code, thermal deformations of two rotors were also calculated. Since mass flow rate of the air passing through the rotor of inner vent type was greater than the other the cooling performance of the rotor of inner vent type was calculated to be better. Because the time spent in a rapid braking was very short most of the heat generated by the motion was transferred to the rotor. Therefore the values of temperature were almost same for the two rotors. However there was noticeable difference in the thermal deformation between two rotors.