Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 03, 2022 - November 06, 2022
The flow past an archery bare-shaft arrow is computed by using a CFD code. Two types of arrow point, i.e., bullet point and streamlined point, are simulated for the Reynolds number, based on the shaft diameter, in a range 1.0 × 104 ≤ Re ≤ 2.0 × 104, and the attack angle, α, varied between 0.0° and 1.0°. The flow field around the arrow point and the surface of shaft is visualized mainly for the quasi-steady state flows. The drag coefficient CD is computed for the ranges of Re and α, and compared with the previous analytical, as well as experimental values.The results of the present study appears to suggest that for the arrow with bullet point and non-zero attack angle, the onset of unsteadiness is triggered by the separation at the joint portion between point and shaft, while for the arrow with streamlined point, unsteadiness manifests at the arrow tail and gradually spread upstream on the surface of the shaft.
The Proceedings of Joint Symposium: Symposium on Sports Engineering, Symposium on Human Dynamics
