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An experimental study on deterministic freak waves: Generation, propagation and local energy

机译：确定性怪胎波的实验研究：产生，传播和局部能量

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摘要

An experimental investigation on deterministic freak waves is presented here. Four similar freak wave sequences with different wave steepness values were used as the target waves in the experiments. A phase-amplitude iteration method was adopted to generate these deterministic freak wave sequences in the wave flume. The results demonstrate that the phase iteration considerably improves the modeling in the first optimization and becomes less effective for subsequent optimizations. The method is more likely to achieve well-matching results for small steepness target waves through phase iterations. Wave speeds and wave energy distributions of analyzed freak waves were also investigated. Reasonable estimates of wave speeds were achieved by adopting trough-to-trough periods and wave heights of freak waves according to third-order Stokes wave theory. The quadratic phase couplings between the first-harmonic component and higher-harmonic components were significant. (C) 2016 Published by Elsevier Ltd.
机译：本文介绍了确定性怪胎波的实验研究。实验中将四个具有不同波陡度值的类似怪胎波序列用作目标波。采用相幅迭代法在波槽中产生这些确定性的怪异波序列。结果表明，相位迭代可显着改善第一个优化中的建模，而对后续优化的有效性降低。该方法更有可能通过相位迭代为小陡度目标波获得良好匹配的结果。还研究了畸形波的波速和波能分布。根据三阶斯托克斯波理论，通过采用波谷到波谷周期和畸形波的波高，可以合理地估计波速。一阶谐波分量和高阶谐波分量之间的二次相位耦合很明显。 （C）2016由Elsevier Ltd.出版

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  • 来源
    《Ocean Engineering》 |2016年第15期|83-92|共10页
  • 作者

    Deng Yanfei; Yang Jianmin; Tian Xinliang; Li Xin; Xiao Longfei;

  • 作者单位

    Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Freak wave; Phase-amplitude iteration; Wave speed; Wave energy distribution;

    机译：奇异波;相幅迭代;波速;波能量分布;

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