大学生方程式赛车尾翼负升力特性有限元探究

由空气动力学套件产生的负升力对提高大学生方程式赛车的赛道表现有着重要作用,赛车尾翼是产生负升力的主要部件之一。使用有限元方法(computational fluid dynamics)对大学生方程式赛车尾翼的负升力特性进行研究。结果表明,在一定范围内尾翼产生的负升力数值随主翼攻角的增大而增大;大学生方程式整车流场中影响尾翼负升力的外界因素主要是车身遮挡物与前翼下游上升气流,尾翼的最大负升力损失达到40%;对尾翼分区域设计不同主翼攻角值有效提升了赛车尾翼产生负升力的能力。

Study on aerodynamic performance of rear wing for Formula SAE racing cars based on finite element method

The negative lift generated by the aerodynamics package plays an important role in improving the track performance of the Formula One racing. The rear wing is one of the main components that generate negative lift. In this paper, Computational Fluid Dynamics(CFD) technology is used to study the aerodynamic characteristics of the rear wing of formula racing car for college students. The results show that the value of negative lift generated by the empennage increases with the increase of the angle of attack of the main wing in a certain range. The external factors affecting the negative lift of the tail in the Formula SAE vehicle flow field are mainly the body blockage and the upstream airflow of the front wing. The maximum negative lift loss is about 40%; designing different main wing angles of attack for the tail sub-region can effectively improve the ability of the Formula SAE tail to produce negative lift.