Prediction of the Side Drift Force of Full Ships Advancing in Waves at Low Speeds

Journal of Marine Science and Engineering

Shukui Liu¹  Apostolos Papanikolaou² 

[1] School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Ave., Singapore 639798, Singapore;Ship Design Laboratory, National Technical University of Athens, 9 Heroon Polytechniou, 15773 Athens, Greece;

关键词: second order steady sway wave force;    side drift force;    empirical formula;    3D panel method;    near-field method;    maneuverability in waves;   

DOI  :  10.3390/jmse8050377

来源: DOAJ

【 摘 要 】

In this study, we analyze the experimental results of the mean sway (side drift) forces of six full type ships at low speeds in regular waves of various directions and compare them with numerical results of the in-house 3D panel code NEWDRIFT. It is noted that the mean sway force is most significant in relatively short waves, with the peak being observed at λ/L_PP ≈ 0.5–0.6. For λ/L_PP > 1.0, the corresponding value is rather small. We also observe a solid recurring pattern of the mean sway force acting on the analyzed full type ships. On this basis, we proceed to approximate the mean sway force with an empirical formula, in which only the main ship particulars and wave parameters are used. Preliminary validation results show that the developed empirical formula, which is readily applicable in practice, can accurately predict the mean sway force acting on a full ship, at both zero and non-zero speeds.

【 授权许可】

Unknown