High-order computational fluid dynamics simulations of a spinning golf ball

Crabill, Jacob; Witherden, Freddie D.; Jameson, Antony

doi:10.1007/s12283-019-0300-y

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…Work using CFD with soccer balls has not progressed as far as it has with, for example, golf balls. 12 Past CFD work on soccer balls has been able to reproduce trends for aerodynamic coefficients that have been determined with balls in wind tunnels. 13 A CFD effort to study the influence of the seams on soccer-ball aerodynamics also reproduced the trends seen with wind tunnels, but variations in aerodynamics coefficients as seam properties varied were additionally reported.…”

Section: Introductionmentioning

confidence: 99%

Effect of a soccer ball’s seam geometry on its aerodynamics and trajectory

Goff

Hong

Asai

2019

Proceedings of the Institution of Mechanical Engineers, Part P:

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Five different soccer balls, each possessing the traditional 32-panel surface design, were tested in a wind tunnel. Only seam depth and width varied between the balls. Wind-tunnel tests and an examination of correlation revealed that seam width with a linear fit [Formula: see text] and [Formula: see text] was a stronger indicator of a ball’s critical speed than seam depth. Wind-tunnel data were used for computational modeling of many soccer-ball trajectories. It was determined that variations in seam geometry resulted in fluctuations up to 4 m in the horizontal range of hard-hit, no-spin kicks that travel approximately 68 m. Those seam geometry variations also contributed to lateral deflections up to 4 m for the aforementioned hard-hit, no-spin kicks.

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Section: Introductionmentioning

confidence: 99%

Effect of a soccer ball’s seam geometry on its aerodynamics and trajectory

Goff

Hong

Asai

2019

Proceedings of the Institution of Mechanical Engineers, Part P:

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“…These complex interaction might require the use of scale-resolved methods such as detached eddy simulations to capture in more detail. Such methods have recently been applied to sports projectiles such as golf balls [27][28][29], soccer balls [30,31] and feather shuttlecocks [32]. Transition to turbulence is also not currently accounted for in the turbulence model used.…”

Section: Discussionmentioning

confidence: 99%

Disc golf trajectory modelling combining computational fluid dynamics and rigid body dynamics

2022

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In the sport of disc golf, athletes utilize discs with various shapes to achieve their desired throws. Computational methods have the potential to give further insight into how the disc shape and throw parameters influence the disc trajectory. A methodology is presented that combines computational fluid dynamics to obtain the aerodynamic coefficients for a given disc shape, with rigid body dynamics to simulate the disc golf flight. The computational fluid dynamics simulations were performed in OpenFOAM, and compared against wind tunnel experiments from the literature. The trajectory model was implemented in an open-source software, and compared against simulated trajectories against measured trajectories of actual disc golf throws. The methodology was applied to three different discs, comparing their aerodynamic coefficients and flight trajectories. How the disc shape impacts lift, drag and moment coefficients and corresponding flight trajectories is discussed. The methodology has the potential to consistently characterize the flight of a disc and lead to greater understanding of disc flight, and thereby contribute to both training, disc development and regulation.

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“…While the influence of dimpled surfaces (e.g., golf balls), and smooth spheres are well researched (Crabill et al, 2019;Aoki et al, 2010;Achenbach, 1972;Sakib and Smith, 2020), the current understanding of roughened spheres is less developed. Specifically, little is known regarding how a varying roughness spacing changes the effective roughness of a surface, and how the interaction(s) of roughness and spin affect lift and drag.…”

Section: Introductionmentioning

confidence: 99%

The Combined Influence of Spin and Roughness Frequency on Sphere Aerodynamics

Elliott,

Smith,

Lyu

et al. 2023

Preprint

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In this paper, the lift and drag of spinning spheres roughened with macro roughness elements are examined. The velocity field of these same spheres in flight is measured with Particle Image Velocimetry (PIV). Several spheres with varying roughness are examined at various spin rates and fixed Reynolds number. Unlike previous studies where the roughness height is varied, in the present work the number of roughness elements is varied. The PIV datasets are used to determine the boundary layer separation points for each case. Comparing the lift and drag to the separation points reveals that 1) the separation points become more asymmetric with spin (the Magnus effect), 2) The drag increases with the size of the wake and 3) the drag increases with the asymmetry of the separation points, meaning that lift on spheres correlates to increased drag. Scant evidence of this third effect has been reported previously. Additionally, it is shown that, counter to smooth spheres, the force transmitted to the surface through the roughness elements leads to significant drag. The drag is shown to increase with the number of roughness elements while the lift decreases. Results have implications for understanding aerodynamic forces on bluff bodies with roughness and passive control of aerodynamic forces through roughness element frequency rather than the traditional roughness height.

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High-order computational fluid dynamics simulations of a spinning golf ball

Cited by 9 publications

References 32 publications

Effect of a soccer ball’s seam geometry on its aerodynamics and trajectory

Effect of a soccer ball’s seam geometry on its aerodynamics and trajectory

Disc golf trajectory modelling combining computational fluid dynamics and rigid body dynamics

The Combined Influence of Spin and Roughness Frequency on Sphere Aerodynamics

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