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Volume 42 Issue 9
Nov.  2020
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Article Contents
Pan Wenbo,Cui Cheng,He Meng, et al. 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
Citation: Pan Wenbo,Cui Cheng,He Meng, et al. 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

Experimental study on mooring tension of a moored rectangular cylinder under freak wave

doi: 10.3969/j.issn.0253-4193.2020.09.010
  • Received Date: 2019-07-06
  • Rev Recd Date: 2019-11-19
  • Available Online: 2021-04-21
  • Publish Date: 2020-09-25
  • 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.
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