Numerical Simulation of Wind Drift of Arrows on the Olympic Venue for Tokyo 2020

In the present work, the dynamics of archery arrows are studied by means of a mathematical model to evaluate their response to different wind characteristics and initial conditions. Numerical computations are performed to quantify the effect that the background wind has on the dynamics of the arrows during their flights. Aerodynamic and physical characteristics of two commercial arrows are considered. The background wind information from the venue, where the Archery competition will be held in the Tokyo Olympic Games in 2020 was provided by JAMSTEC. In a simulated archery range of 70 m, the heavier arrow showed a lateral deviation from the center of the target of ~0.11 m, whereas the lighter arrow showed a final deviation in its trajectory of ~ 0.15 m. The ratio of the drag force to the gravitational force plays a key role in determining the deviation in the trajectory. By keeping the boundary layer laminar, a less deviated shot can be achieved. With increasing arrow's initial velocity, the deviation in the trajectory also reduces.