A Review Paper on Estimation of Drag Force for Various Shapes by using Wind Tunnel

The issue of reducing the vehicles power consumption emerged nearly at the same time when vehicle itself was invented. In the beginning fueling stations were few in number and we wanted low fuel consumption vehicle which could cover large distances and so as to increase fuel efficiency of vehicle; there are various constraints that act on the vehicle out of which drag force plays an important role in reduction of fuel efficiency so reduction of drag is becoming very important challenge for all the automobile manufacturers because the aerodynamic characteristics directly affects the stability, driving characteristics, safety, operation and fuel consumption of automobiles. Wind tunnel is used in aerodynamic research and it is also used to study the effect of air which is moving over solid objects. This paper's objective is to analyze aerodynamic characteristics of circular, square, semi-circular, aerofoil, etc, shapes using wind tunnel method.