Visualization of flow over a golf ball at Re = 110,000.
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Abstract
The drag on a golf ball can be reduced by dimpling the surface. There
have been few studies, primarily experimental, that provide
quantitative information on the details of the drag reduction
mechanisms. To illuminate the underlying mechanisms, Direct Numerical
Simulation (DNS) is applied to the flow around a golf ball using an
immersed boundary method. Computations are performed using up to 500
processors on a range of mesh resolutions from 61 million points to
1.2 billion points. Results are presented from simulations performed
at a Reynolds number of Re =