Hydrodynamic response of swinging or slewing rotating cylinders subject to a ship's rolling motion
Artikel i vetenskaplig tidskrift, 2024

In maritime engineering, ensuring vessel stability remains a paramount concern. This study investigates the hydrodynamic response of Magnus anti-rolling devices, modeled as swinging or slewing rotating cylinders, under a ship's rolling motion. Through numerical simulations using the overset mesh technique and large eddy simulation, we analyze various parameters, including rolling angles, rotating speeds, and swinging amplitudes. Our findings highlight the importance of considering the ship's degree of freedom as substantial ship rolling significantly affects hydrodynamic coefficients on the rotating cylinder. We observe interesting dynamics during slewing motion, with the cylinder forming a spiral tip vortex. Optimizing the cylinder's rotating speed enhances the lift-to-drag ratio, particularly for small rolling angles. Furthermore, the effective lift generated during swinging motion is lower than during slewing motion, emphasizing the need to optimize the swinging amplitude, which is recommended to be no less than 170°. These insights advance our understanding of Magnus anti-rolling devices and offer practical guidance for improving vessel stability in complex maritime environments.


Lin Jianfeng

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Shizhao Wang

Huadong Yao

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Yumin Su

Physics of Fluids

1070-6631 (ISSN) 1089-7666 (eISSN)

Vol. 36 065156

Strategiskt forskningsprojekt på Chalmers inom hydro- och aerodynamik

Stiftelsen Chalmers tekniska högskola, 2019-01-01 -- 2023-12-31.

GEneric Multidiscaplinary optimization for sail INstallation on wInd-assisted ships (GEMINI)

Trafikverket (2023/32107), 2023-09-01 -- 2026-08-31.





C3SE (Chalmers Centre for Computational Science and Engineering)



Strömningsmekanik och akustik



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