Figure - available from: Mathematical Problems in Engineering
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Flow streamlines around the (a) sphere and (b) soccer ball and (c) the zoomed-in view of the flow field inside the seam area.
Source publication
The football game is the most popular, played, and loved sport around the world. The advent of technological breakthroughs and the continuous increase in consumer demand have led to a revolution in football’s design and manufacturing process. In the past, studies in soccer ball aerodynamics mainly were limited to the investigation of lift and drag...
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The characteristics of aerodynamic forces acting on an elliptic cylinder with an aspect ratio of 0.5 with a wind attack angle from 0 to 90° and subjected to the boundary layer wind tunnel were investigated. The model was initially calibrated and compared with the existing work. The aspect ratio of the investigated model was 0.5, and the model was e...
Citations
... Numerical flow simulations over baseball, soccer ball and volleyball are performed to find out aerodynamic characteristics [33]. Large eddy simulation of the flow over a soccer ball is done by Iftikhar et al., [34]. Numerical simulation of flow over a stationary and rotating sphere is carried out by Poon et al., [35]. ...
The focus of the present chapter is to analysis aerodynamic forces and moment on sport balls, badminton shuttlecock and javelin. Lift force is analytically obtained employing Kutta-Joukowski theorem over a spinning sphere in an inviscid and incompressible flow. The inviscid flow analysis reveals that lift force is directly proportional to spinning which coincides with the experimental data of Bearman and Harvey. The lift force over the spinning sphere is less as compared to a rotating cylinder. The tangential velocity component on the surface of the spinning sphere is a cubic algebraic equation which has one real and two conjugate imaginary roots. Aerodynamic performance of feather and synthetic badminton shuttlecock is discussed in conjunction with experimental data. Available video images of a javelin trajectory are used to reconstruct its aerodynamic performance.
... 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. ...
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.
