| 畸形波作用下锚泊方柱系泊张力特性研究 |
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| 引用本文： | 潘文博,崔成,何萌,曾繁旭,梁晨,张宁川.畸形波作用下锚泊方柱系泊张力特性研究[J].海洋学报,2020,42(9):87-99. |
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| 作者姓名： | 潘文博 崔成 何萌 曾繁旭 梁晨 张宁川 |
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| 作者单位： | 1.大连理工大学 海岸和近海工程国家重点实验室，辽宁 大连 116024 |
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| 基金项目： | 国家自然科学青年基金（51509120）。 |
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| 摘 要： | 基于物理模型试验，探究畸形波和不规则波作用下浮体系泊张力差异问题。讨论相对波高、相对周期和畸形波参数α1对系泊张力的影响。结果显示:畸形波参数α1和浮体系泊张力显著相关。在α1=2.0～2.83范围内，畸形波作用下迎浪侧系泊张力最大值可达不规则波作用的1.9倍。在相对波高Hs/d=0.032～0.097范围内，畸形波作用下迎浪侧系泊张力最大值显著大于不规则波的作用结果，但畸形波和不规则波对应的1/3值及平均值几乎一致。就相对周期影响而言，迎浪侧系泊张力最大差别出现在谱峰周期Tp0p范围内。频域方面采用小波分析方法讨论畸形波和不规则波作用下浮体系泊张力时频谱特征，两种波浪作用下系泊张力时频特征有显著差别。
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| 关 键 词： | 畸形波 系泊方柱 系泊张力 小波分析 |
| 收稿时间： | 2019/7/6 0:00:00 |
| 修稿时间： | 2019/11/19 0:00:00 |
Experimental study on mooring tension of a moored rectangular cylinder under freak wave |
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| Pan Wenbo,Cui Cheng,He Meng,Zeng Fanxu,Liang Chen,Zhang Ningchuan.Experimental study on mooring tension of a moored rectangular cylinder under freak wave[J].Acta Oceanologica Sinica (in Chinese),2020,42(9):87-99. |
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| Authors: | Pan Wenbo Cui Cheng He Meng Zeng Fanxu Liang Chen Zhang Ningchuan |
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| Institution: | 1.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China2.Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin 300456, China |
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| Abstract: | Based on extensive experiments on the mooring tension of a rectangular cylinder, the present investigation compares the mooring tension of a floating rectangular cylinder under freak and random waves and quantifies the difference through experimental measurements. The effects of the relative wave height, relative period and freak wave parameter α1 on the mooring tension are investigated. The results show that, the freak wave parameter α1 has significant effect on the mooring tension of the floater. With α1=2.0～2.83, the maximum mooring tension under freak wave were 1.9 times larger than that under random wave. With Hs/d=0.032～0.097, the maximum mooring tension under freak wave are significantly larger than those under irregular waves, but the 1/3 large value and average value under freak and irregular waves are almost the same. For the effect of the relative period, the critical variation of mooring tension occur at period within Tp0p. The time-frequency spectra of the mooring tension under freak and random waves are calculated by wavelet analysis to investigate the time-frequency structure characteristics and variation. The time-frequency characteristics of mooring tension are significantly different from those of random wave. |
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| Keywords: | freak wave moored rectangular cylinder mooring tension wavelet analysis |
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