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Experimental study on mooring tension of a moored rectangular cylinder under freak wave
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Wenbo Pan1, Cheng Cui2, *, Meng He1, Fanxu Zeng1, Chen Liang1, Ningchuan Zhang1
Haiyang Xuebao | 2020, 42(9) : 87 - 99
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Haiyang Xuebao | 2020, 42(9): 87-99
• Ocean Engineering •
Experimental study on mooring tension of a moored rectangular cylinder under freak wave
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Wenbo Pan1, Cheng Cui2, *, Meng He1, Fanxu Zeng1, Chen Liang1, Ningchuan Zhang1
Affiliations
  • 1 State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
  • 2 Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin 300456, China
Published: 2020-09-25 doi: 10.3969/j.issn.0253-4193.2020.09.010
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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 Tp<T0p. 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.

freak wave  /  moored rectangular cylinder  /  mooring tension  /  wavelet analysis
Wenbo Pan, Cheng Cui, Meng He, Fanxu Zeng, Chen Liang, Ningchuan Zhang. Experimental study on mooring tension of a moored rectangular cylinder under freak wave[J]. Haiyang Xuebao, 2020 , 42 (9) : 87 -99 . DOI: 10.3969/j.issn.0253-4193.2020.09.010
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Year 2020 volume 42 Issue 9
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Article Info
doi: 10.3969/j.issn.0253-4193.2020.09.010
  • Receive Date：2019-07-06
  • Online Date：2026-03-27
  • Published：2020-09-25
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  • Received：2019-07-06
  • Revised：2019-11-19
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Affiliations
    1 State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
    2 Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin 300456, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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