Authors: Jupaka Mukesh Kumar, Kasaboina Mahesh, Thulugu Dileep, Dr. Yagya Dutta Dwivedi
Abstract: This project presents an overall aerodynamic analysis of an Audi R8 using computational fluid dynamics (CFD) for performance enhancement in terms of decreasing drag and increasing downforce. The study proposes to investigate the effect of a Selig S1223 (s1223-il) rear spoiler at varying angles of attack 0°, 3°, and 5° at varying inlet speeds of 20 m/s, 30 m/s, and 40 m/s. The analysis was conducted by simulating the model in SolidWorks for geometry and ANSYS Fluent for the flow study. The car was first analyzed in the base state without a spoiler, exhibiting growth in Coefficient of lift (CL) and Coefficient of drag (CD) coefficients as speed increases. After installing the spoiler, the lift decreased by a remarkable margin (with creation of downforce) while the drag increased. The study presents that the higher the angle of attack, the higher the downforce, thus improving the vehicle's stability but at greater drag forces. Using a experimental analysis of the result from the two cases involving a spoiler and no spoiler, this project proves optimal aerodynamic design changes that minimize drag and increase the aerodynamic efficiency of the vehicle as a whole. Such results are useful in designing performance vehicles with greater handling and lesser aerodynamic drag.
DOI: http://doi.org/
