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.
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June 2024
Research Article|
June 21 2024
Hydrodynamic response of swinging or slewing rotating cylinders subject to a ship's rolling motion
Jianfeng Lin (林健峰)
;
Jianfeng Lin (林健峰)
(Formal analysis, Investigation, Methodology, Software, Writing – original draft, Writing – review & editing)
1
The State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences
, Beijing 100190, People's Republic of China
2
College of Shipbuilding Engineering, Harbin Engineering University
, Harbin 150001, People's Republic of China
3
Department of Mechanics and Maritime Sciences, Chalmers University of Technology
, 412 96 Gothenburg, Sweden
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Shizhao Wang (王士召)
;
Shizhao Wang (王士召)
a)
(Funding acquisition, Project administration, Resources, Supervision, Validation, Writing – original draft, Writing – review & editing)
1
The State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences
, Beijing 100190, People's Republic of China
4
School of Engineering Sciences, University of Chinese Academy of Sciences
, Beijing 100049, People's Republic of China
a)Author to whom correspondence should be addressed: [email protected]
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Hua-Dong Yao (姚华栋)
;
Hua-Dong Yao (姚华栋)
(Conceptualization, Methodology, Software, Supervision, Validation)
3
Department of Mechanics and Maritime Sciences, Chalmers University of Technology
, 412 96 Gothenburg, Sweden
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Yumin Su (苏玉民)
Yumin Su (苏玉民)
(Conceptualization, Supervision, Validation)
2
College of Shipbuilding Engineering, Harbin Engineering University
, Harbin 150001, People's Republic of China
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a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 36, 065156 (2024)
Article history
Received:
April 14 2024
Accepted:
June 06 2024
Citation
Jianfeng Lin, Shizhao Wang, Hua-Dong Yao, Yumin Su; Hydrodynamic response of swinging or slewing rotating cylinders subject to a ship's rolling motion. Physics of Fluids 1 June 2024; 36 (6): 065156. https://doi.org/10.1063/5.0213932
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