Numerical analysis of two spheres falling side by side

Chia Lin Chiu, Chia Ming Fan, Chia Ren Chu

研究成果: 雜誌貢獻期刊論文同行評審

摘要

This study numerically investigates the interaction between two side-by-side free-falling spheres in water. The predicted S-curve falling trajectories of the spheres were verified by laboratory experiments, and the attraction-repulsion of lateral force on the vertically falling spheres is investigated to give a better understanding of the evolution of the lateral force by excluding the effect of the transverse motion. The flow pattern around the spheres reveals that the wake flows play an essential role in the fluid-sphere interaction. Then, the two free-falling spheres with transverse motion are considered to examine the interacting force and the crosswise strength of wake flows. This study attempts to explore the wake flow as the possible mechanism for the S-curve falling trajectories of two spheres. Finally, the falling processes of the two spheres are simulated in a deeper tank to inspect the falling trajectories and the reappearing flow characteristics.

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文章編號072112
期刊Physics of Fluids
34
發行號7
DOIs
出版狀態已出版 - 1 7月 2022

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