Optimization of Lift Generation for a Spinning Surface through its Design and Speed

Abstract:

The rotational motion of a ball, be it a tennis ball, a golf ball or even a soccer ball, will yield a curving trajectory during airborne. We would best describe this phenomenon by its popular handle, the curve ball. The vortex generated by the ball is the one responsible for such behavior. Basically, the stronger the vortex, the more enhanced the arched flight we will get. Simply put, the ball is producing lift, thus the inclination to deviate to one side from otherwise a straight path. The same principle was employed to harness lift force in rotating cylinder. The question is, how strong the vortex should be and how much is too much. In this paper, we found that certain shape and speed (to make the surface rougher and yield stronger vortex) of the cylindrical surface will determine whether or not it generates better lift when the surface is rotating.

• Periodical: Applied Mechanics and Materials (Volume 793)
• Pages: 630-634
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.793.630
• Online since: September 2015
• Authors: Azharrudin Asrokin*, Mohammad Rizal Ramly
• Keywords: Computational Fluid Dynamics, Design, Lift Generator, Rotating Cylinder, Surface, Surface Roughness

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