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

被引：31

作者：

Deng, Yanfei ^{[1
]}

Yang, Jianmin ^{[1
]}

Tian, Xinliang ^{[1
]}

Li, Xin ^{[1
]}

Xiao, Longfei ^{[1
]}

机构：

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

来源：

OCEAN ENGINEERING | 2016年 / 118卷

基金：

中国国家自然科学基金;

关键词：

Freak wave; Phase-amplitude iteration; Wave speed; Wave energy distribution; EXTREME WAVES; EVOLUTION;

D O I：

10.1016/j.oceaneng.2016.02.025

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

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.

引用

页码：83 / 92

页数：10

共 38 条

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