Aerodynamics of cricket ball.

Abstract

This paper describes experiments performed on stationary cricket ball to determine the aerodynamic forces acting on the ball over a range of bowling speeds. Co-efficient of drag was measured directly and it was found for the stationary ball. At air velocities above 112kmph, the drag coefficient increased with increasing air speed being weakly influenced by the vertical seam angle. Roughening one side of the ball increased the side force but delayed until a marginally higher velocity was reached. When bowler was applied to the smooth ball, the side force increased almost linearly but there was no resultant lift force. The development of the measured drag are discussed in terms of boundary layer flow