AERODYNAMICS OF A GOLF BALL WITH GROOVES（空气动力学与凹槽的高尔夫球）.pdf

AERODYNAMICS OF A GOLF BALL WITH GROOVES Jooha Kim School of Mechanical and Aerospace Engineering, Seoul National University Seoul 151-7 , Korea k-juha01 @snu.ac.kr Haecheon Choi School of Mechanical and Aerospace Engineering, Seoul National University Seoul 151-7 , Korea choi@snu.ac.kr ABSTRACT In the present study, we devise a new golf ball that does In the present study, we investigate the aerodynamics of not have dimples but grooves on the surface (Choi et al., our newly designed golf ball that does not have dimples but 2008). To investigate the aerodynamic characteristics of the grooves on its surface. We measure the drag and lift forces on grooved ball, we measured the drag and lift forces on the the grooved ball in the ranges of real golf-ball velocity and grooved ball in the ranges of real-golf ball velocity and spin spin rate, and compare them with those of smooth and rate, and compare them with those of smooth ball and a golf dimpled balls. A