Drag Reduction in An Automobile by using Aerodynamic Shapes

Abstract

This paper deals with the reduction of drag. The maximum concerns of the automotive aerodynamics are reducing drag, reducing wind noise, minimizing noise emission, and preventing undesired lift forces and other causes of aerodynamic instability at high speeds. For some classes of racing vehicles, it may also be important to produce desirable downwards aerodynamic forces to improve traction and thus cornering abilities. The characteristic shape of a road vehicle is bluff, compared to an aircraft and it operates very close to the ground, rather than if free air. The operating speeds are lower. Finally, the ground vehicles has fewer degree of freedom of motion is less affected by aerodynamic forces. Drag reduces the speed of the automobile and also reduces the efficiency considerably at high speed. Therefore, to improve the efficiency and the overall stability of the van a duct can be formed at the top front of the van. By attaching the duct setup, the flow pattern of the air is modified by reducing the vortex. This method is very economical and also compact nature of the van is undisturbed i.e., size remains the same. The drag coefficient of the van can be reduced to the greater extent. This can be implemented as the real time project and improve the overall efficiency of the van.