EXPERIMENTAL ANALYSIS OF AERODYNAMIC DRAG REDUCTION OF A HATCHBACK MODEL CAR BY REAR SPOILER IN THE WIND TUNNEL

摘要

The main aim of this research is to optimize the various aerodynamic characteristics of the vehicle and to improve the fuel efficiency and vehicle performance by reducing the drag. The aerodynamic drag resistance is considered and minimized to reduce the fuel consumption. In this research, the drag resistance of the vehicle will be reduced by using the rear spoiler. The spoiler is designed and fabricated for achieving the best result in reducing the drag in a hatchback car model. The scaled model of the car is fabricated by using the aluminum material. The spoiler also designed using this aluminum material. The hatchback model car is analyzed without a spoiler and with a spoiler in the wind tunnel for the drag resistance. The comparison between the without and with spoiler arrangements on the scaled model car is also investigated.