关键词: 空气动力学；敏感性分析；FSC 赛车；Fluent

Abstract: This paper mainly introduces the design and optimization process of the aerodynamic kit of the formula student China (FSC) racing car. For the Wonder-E05 racing car of Liaoning University of Technology, the aerodynamic characteristics of the racing car under different working conditions are studied through computational fluid dynamics (CFD) simulation analysis. The results show that by analyzing the change of the body attitude under the pitch condition, it is found that the front wing design is sensitive to the change of ground clearance, which makes the aerodynamic characteristics of the vehicle change significantly under the pitch condition, and the front wing can be equipped with high ground clearance and large angle of attack flaps are used to reduce the ground clearance sensitivity of the front wing. The research results can provide design ideas for the vehicle design in the subsequent racing car design, and reduce the influence of ground clearance on the aerodynamic sensitivity of the vehicle.

Key words: Aerodynamics; Sensitivity analyzes; FSC racing car; Fluent