Analysis of Extreme Air Gaps of a Semi-Submersible Using Method of LH-Moments

作者:Liu, Shuang; Xiao, Longfei*; Kou, Yufeng
来源:Journal of Shanghai Jiaotong University, 2017, 51(2): 209-213.
DOI:10.16183/j.cnki.jsjtu.2017.02.012

摘要

For a semi-submersible operated in water at a depth of 1.5 km, the sample data of the relative wave crests at different locations from an experiment were assumed to follow a two-parameter Weibull distribution and the method of LH-moments was used to estimate the parameters. Then, the exceedance probability distributions for different orders of LH-moments were obtained. The results show that as the order of LH-moments increases, the two-parameter Weibull distribution yields better trend of the large relative wave crests under the 1-year-return sea state, and clearly a better fit of the large relative wave crests under the 100-year-return sea state.

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