电动方程式赛车外流场的数值模拟

Numerical Simulation of External Flow Field for Formula Electric Racing Car

利用CATIA软件建立了HUAT电动方程式赛车的三维模型,基于CFD技术对未装空气动力学套件的赛车外流场进行了数值模拟,利用Profili软件对赛车的尾翼及前翼的翼型进行了选择并确定了其几何参数,在CATIA软件中建立了尾翼及前翼的三维模型,对尾翼的气动特性进行了仿真分析,确定了尾翼第一襟翼的最佳攻角。在此基础上对安装空气动力学套件的赛车外流场进行了分析,结果表明:空套的安装使赛车的阻力增加了10.96%,但负升力显著增加,有利于提高赛车的操纵稳定性。

The 3D model of HUAT formula electric racing car was established by using CATIA software.Based on the CFD technology,the external field of the racing car without aerodynamic devices was simulated.The airfoil of the rear wing and front wing of the racing car were chosen and the geometric parameters of the wings were determined by utilizing Profili software.The 3D model of the wings were established in the CATIA software.The aerodynamic characteristics of the rear wing were simulated and analyzed.The optimal angle of attack of the first flap of rear wing was determined.On this basis,the external flow field of the racing car with aerodynamic device was analyzed.The results show that the drag of the racing car is increased by 10.96%,but the negative lift is improved significantly by the installation of the aerodynamic devices,which is beneficial to improve the handling stability of the racing car.