Abstract: Aerodynamics simulation is very important in the design of wings external flow field of car racing. ProE software is used to establish the 3D model, and Fluent software is used to make the aerodynamics simulation analysis of the racing car. Aerodynamics package is designed and installed onto the car model. Then, the undated car model is used in the simulation of aerodynamics. The results show that, after the installation of pivotal forelimb and proximal limb, the value of lift becomes negative, the high speed and fast cornering performance has been promoted, driving experience has been improved. The installed pivotal forelimb is beneficial to the improvement of the air flow condition of the side tank and the heat dissipation performance of the water tank, the proximal limb can effectively reduce the turbulent kinetic energy and the eddy current resistance.

Key words: Aerodynamics; Fluent; Wings external flow field of racing car; 3D model

摘要： 空气动力学仿真在赛车翼板外流场设计中至关重要。利用 ProE 绘制三维赛车模型， Fluent 对赛车的外流场进行空气动力学仿真。设计空气动力学套件，并对安装空气动力学套 件后的赛车模型进行空气动力学仿真。对比仿真结果显示，前翼和尾翼安装后，赛车气动升 力变为负值，赛车高速行驶及快速过弯性能有所提升，驾驶体验得以改善。所安装的前翼有 利于侧舱气流状况的改善，提高水箱的散热性能；尾翼可有效减少湍流动能，使涡流阻力减 小。

关键词: 空气动力学； Fluent；赛车翼板外流场；三维模型