Aerodynamic study of a racing car

This thesis work aims to analyze the aerodynamic aspects of a competition car. In particu- lar, we considered here the Honda Civic 2018, a 5-door sedan of the Japanese house, which competes in the TCR championship, built by J.A.S. Motorsport of Arluno (MI). Thanks to the internship at this company, I was able to observe all the construction phases of the car and understand how a car championship is dealt with in many ways, from the logistic one to the preparation of the setup for the different tracks, to the continuous refinements on the mechanics, on the chassis and on the aerodynamic part. In this thesis, we will examine initially the aerodynamic aspects that involve the design phase of the car, starting from the shape of the standard one leading to the construction of the track car, and then those that accompany the teams during all competitions, linked to the definition of the setup and development of the car. Concretely, we will analyze the CFD maps that the company TotalSim was commissioned to perform on the Honda Civic in different configurations created in the design period of the car and, once chosen the final configuration, we will build aerodynamic maps, easily usable by track engineers, which will make it possible to take full advantage of the characteristics of the car on each track. Finally, an improvement will be described which, studied during this year, can be implemented in the next season.