Drag Reducation Study of a Compact SUV 

Zhicheng Wei

School of Mechatronics and Vehicle Engineering, Chongqing jiaotong university, Chongqing, 400074, China

Abstract: Based on the simulation analysis of SUV, corresponding additional devices are added at the top and the tail of the vehicle to reduce the disturbance of the airflow at the rear of the vehicle, thus achieving the purpose of drag reduction. The results show that the aerodynamic drag coefficient of the prototype vehicle is 0.3562, and the aerodynamic drag coefficient of the SUV after adding the additional device to the roof is 0.3392, and the drag reduction rate reaches 4.8%. After adding an additional device at the rear of the vehicle, the SUV has aerodynamic drag coefficient of 0.3426 and a drag reduction rate of 3.8%.

Keywords: SUV; Aerodynamic drag; Attachment; Optimization