Multi-degree-of-freedom motions and effect on rolling dynamics of damaged ship in oblique waves

被引:0
|
作者
Shi, Zhengyu [1 ,2 ,3 ]
Gao, Zhiliang [1 ,2 ]
Wang, Wenjie [2 ]
Zheng, Zekun [2 ]
机构
[1] Wuhan Univ Technol, Key Lab High Performance Ship Technol, Minist Educ, Wuhan 430063, Peoples R China
[2] Wuhan Univ Technol, Sch Naval Architecture Ocean & Energy Power Engn, Wuhan 430063, Peoples R China
[3] Wuchang Shipbuilding Ind Grp Co LTD, Wuhan 430416, Peoples R China
基金
中国国家自然科学基金;
关键词
Damaged ship; Quartering wave; Coupled motion; Rolling hydrodynamics; CFD; SVR; IN-BEAM WAVES; RO-RO SHIP; NUMERICAL-SIMULATION; INTACT; BEHAVIOR; RESPONSES; HEAD;
D O I
10.1016/j.oceaneng.2024.119518
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
The study investigates the motions of a damaged ship in regular quartering waves with multiple degrees of freedom and their impact on rolling dynamics using computational fluid dynamics simulations. To ensure the accuracy of wave propagation, a wave-making method is extended by combining the inlet boundary and momentum source technique to generate quartering waves. A dynamic mesh strategy based on the motion decomposition concept is employed to efficiently update the mesh following the ship's motions. Additionally, the rolling hydrodynamic coefficients of damaged ship in forced motion are identified using support vector regression. The computation accuracy is verified by the experimental data pertaining to a damaged ship motion in quartering waves and calm water. Results from simulations of the ship's free and forced motions near the resonant roll period indicate that the wave direction significantly influences the roll response compared to other motions. Sway and heave motions play a crucial role in the rolling hydrodynamics of the damaged ship, with the rolling hydrodynamic coefficients varying notably with changes in the phase difference between sway, heave, and roll motions. These variations in damping coefficients result in significant differences in the roll response of the damaged ship in bow and stern quartering waves.
引用
收藏
页数:14
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