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Lift and drag properties of golf balls are customized by the manipulation of dimples along the surface of the ball, allowing for the golf ball to travel further and faster in the air. [ 8 ] [ 9 ] The data from turbulent-flow phenomena has been used to model different transitions in fluid flow regimes, which are used to thoroughly mix fluids and ...
A golf ball beside a hole. A golf ball is a ball designed to be used in golf.Under the rules of golf, a golf ball has a mass no more than 1.620 oz (45.93 g), has a diameter not less than 1.680 inches (42.67 mm), and performs within specified velocity, distance, and symmetry limits.
The effect occurs at lower Reynolds numbers when the ball is rough (such as a golf ball with dimples) than when it is smooth (such as a table tennis ball). In fluid dynamics , the drag crisis (also known as the Eiffel paradox [ 1 ] ) is a phenomenon in which drag coefficient drops off suddenly as Reynolds number increases.
The curved path of a golf ball known as slice or hook is largely due to the ball's spin axis being tilted away from the horizontal due to the combined effects of club face angle and swing path, causing the Magnus effect to act at an angle, moving the ball away from a straight line in its trajectory. [29]
References External links 0–9 19th hole The clubhouse bar. A ace When a player hits the ball directly from the tee into the hole with one stroke. Also called a hole in one. address The act of taking a stance and placing the club-head behind the golf ball. If the ball moves once a player has addressed the ball, there is a one-stroke penalty, unless it is clear that the actions of the player ...
Much effort and research has gone into the design of aerodynamic and hydrodynamic surface contours and added features which delay flow separation and keep the flow attached for as long as possible. Examples include the fur on a tennis ball, dimples on a golf ball, turbulators on a glider, which induce an early transition to turbulent flow ...
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If the golf ball were smooth, the boundary layer flow over the front of the sphere would be laminar at typical conditions. However, the boundary layer would separate early, as the pressure gradient switched from favorable (pressure decreasing in the flow direction) to unfavorable (pressure increasing in the flow direction), creating a large ...