Technology has paved the way for motorsports to advance exponentially. The main area of focus in modern automobiles and race cars is Aerodynamics. It plays a crucial role in vehicle dynamics due to the need for stability at high speeds under varying environments. The Research and development of aerodynamics have come a long way, with the use of basic, inverted air-foils to generate downforce, thus pushing the car to the ground for better contact patch, to unending development of diffusers to improve ground effect, reducing drag with minimal sacrifice of downforce. Previous papers have conducted studies of various air-foil designs for inverted rear wings, and various diffuser designs as well. With various methodologies conducted and parameters obtained, our paper is all about the modification of design of an inverted double-element rear wing and integration with a diffuser with vertical skirts, underneath. The main intent is to enhance downforce with such design and apply in high-performance street cars or race cars. The reason behind attaching a rear wing underneath is to mainly reduce unnecessary drag potentially produced over the vehicle, such as rear wing endplates, and supports. To verify its functionality, the experimental investigation of two different designs of the rear wing will be carried out at various freestream of velocities such as 10m/s , 20m/s , 30 m/s and 40 m/s. The numerical investigation was carried out using Ansys fluent at different flow conditions. Main parameters such as the design and angle of attack (0°, 3° , 6° , 9° , 12° ) and will also be varied to compare the results- Pressure distribution, force distribution, downforce, drag force, and its respective coefficients. The integration of designs of two different components will be a novel study as very few or none have carried out such CFD analysis or had the intention for race car application.
Key words: Spoilers, Racing Car, Wind Tunnel, CFD, Down force, Aerodynamics Performance