Raer wing design and optimization for formula sae car based on CFD
                                                                        YU Kai nan1, XIE Shi bin2
(1.School of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310006, China；2.Zhejiang Geely Automobile Research Institute Co.,LTD, Hangzhou 310000, China)

Abstract: Aiming at the design of rear wing the relationship between aerodynamic performance of rear wingand the profile of rear wing, slot gap, the shape of end plate and the number of wings were studied by the method of CFD numerical analysis. The aerodynamic performance of the wing profile on different camber and different position of camber was analyzed and contrasted. It was found that the influence of camber and thickness for the drag and negative lift, then it was determined the wing profile which is appropriate for formula SAE racing car. According to the varying laws of static pressurechart and streamline chart of different parameters such as the slot of rear wing, the shape of end plate and the number of wings as well as matching principle, the best design scheme of the wing was determined.The results indicate that the wing camber and maximum camber position, slot gap, the number of wings and the shape of end plate has important influence for aerodynamic performance.

Key words: formula SAE racing car; rear wing; aerodynamics; CFD