【作者】 陈冀宁； 王津宏； 王小漫； 王达；

【Author】 Chen Jining;Wang Jinhong;Wang Xiaoman;Wang Da;College of Automotive Engineering,Jilin University;

【机构】 吉林大学汽车工程学院；

【摘要】 目前在中国大学生方程式汽车大赛(FSC,Formula Student China)中,绝大多数车队采用的轴距在1530～1650mm之间,为此对长轴距构型的大学生方程式赛车空气动力学进行探究。为了验证长轴距赛车的可行性以及其所带来的空气动力学优势,通过整车动力学仿真软件及CFD (Computational Fluid Dynamics)计算流体力学仿真软件建立整车仿真分析平台,首先初选三种轴距长度,经过空气动力学仿真对比对整车空气动力学进行规划设计,并通过与以往常规轴距赛车进行动力学圈速仿真对比,最终确定了长轴距构型。其气动负升力系数、升阻比和最大侧向加速度分别增长了24%、8%、10%,证明了长轴距赛车的气动性能及其实际动态优势。更多还原

【Abstract】 Among all these racecars presented at recent Formula Student China events,most of the race teams adopt wheelbases between 1530 mm and 1650 mm for their cars,thus a study on long-wheel-base configured Formula Student racecar is performed.By utilizing vehicle dynamics simulation and computational fluid dynamics simulation software,a platform for vehicle simulation and analysis is established.Firstly,verification towards the availability of long-wheel-base design is confirmed.By preliminarily selecting three different wheelbase for initial dynamic simulation under identical aerodynamic performance,the wheelbase is eventually confirmed and the new car’s dynamic performance is compared with that of the previous normal-wheelbase one via lap time simulations.The lift coefficient,lift/drag ratio and maximum G force have seen an increase of 24%,8% and 10% respectively,proving the aerodynamic performance and dynamic advantage of long-wheel-base cars.更多还原