Drifting of a dead ship in wind
Drifting of a dead ship in wind
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一艘死船在风中漂流
DOI：
10.1080/09377255.2021.1954835
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发表时间：
2021
影响因子：
2.2
通讯作者：
Matsuda Akihiko
中科院分区：
文献类型：
--
作者：
Yasukawa Hironori;Hirata Noritaka;Nakayama Yoshiyuki;Matsuda Akihiko
对不能自行航行的死船在风中的漂移特性进行了实验和理论研究。首先，对散货船模型进行风中自由漂移试验。接下来，开发了一种时域模拟方法来预测风中死船的漂移运动。水池试验和运动模拟表明，死船在风中会产生较大的船体漂移角，且收敛漂移角与风速和初始船航向角无关。为了解释死船在风中为何会出现大漂角的原因，推导了研究死船在风中运动稳定性的理论公式。理论上证实了船舶在风中以大的漂角稳定漂流，而大的漂角则导致船舶运动不稳定。从而阐明了死船漂移行为的原因。
The drift characteristics in wind of a dead ship that cannot sail on its own are investigated experimentally and theoretically. First, a free-drift test of a bulk carrier model in wind is conducted. Next, a time-domain simulation method is developed for predicting the drift motion of the dead ship in wind. Tank tests and motion simulations show that the dead ship drifts with a large hull drift angle overin wind, and the converged drift angle is independent of wind speed and initial ship heading angle. To explain why the dead ship drifts with a large drift angle in wind, a theoretical formula is derived for investigating the motion stability of the dead ship in wind. It is theoretically confirmed that the ship drifts stably with a large drift angle overin wind, whereas drift angles ofandresult in unstable motion. Thus the reason for the drift behaviour of the dead ship is clarified.