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Abstract The aerodynamic characteristics of an automobile are crucial for improving stability and minimizing accidents caused by wind loading and the sharp turns at high speeds. Aerodynamics also significantly impacts fuel efficiency. To meet the growing demand for high-performing and fuel-efficient vehicles, rear wings are employed to reduce drag and increase downforce. This paper comprehensively studies the design and computational fluid dynamics (CFD) analysis of an automobile's rear wing. The rear wing design incorporates an airfoil shape to enhance downforce and delay flow separation, thereby reducing drag. Several parametric studies are employed to optimize factors such as rear wing positioning and shape. It is observed that adding a lip spoiler itself significantly reduces the drag on a vehicle. Further, adding a single-element rear wing with endplates yields additional aerodynamic benefits to a vehicle. Additionally, aerodynamic devices such as flaps and endplates are integrated to further improve the wing's efficiency. Through CFD simulations, this study aims to optimize the rear wing's performance, enhancing vehicle stability during high-speed cornering and reducing overall fuel consumption.
Venkatesh et al. (Tue,) studied this question.