Freak wave forces on a vertical cylinder

被引：40

作者：

Deng, Yanfei ^{[1
,2
]}

Yang, Jianmin ^{[1
,2
]}

Zhao, Wenhua ^{[3
]}

Li, Xin ^{[1
,2
]}

Xiao, Longfei ^{[1
,2
]}

机构：

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

[2] Collaborat Innovat Ctr Adv Ship & Deep Sea Explor, Shanghai 200240, Peoples R China

[3] Univ Western Australia, Fac Engn Comp & Math, 35 Stirling Highway, Crawley, WA 6009, Australia

来源：

COASTAL ENGINEERING | 2016年 / 114卷

基金：

中国国家自然科学基金;

关键词：

New Year Waves; Wave front steepness; Wave forces; Vertical cylinder; Wavelet-based analysis; LOADS;

D O I：

10.1016/j.coastaleng.2016.03.007

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study investigates the wave forces acting on a vertical truncated cylinder induced by freak waves. A series of freak wave trains were generated based on the New Year wave prototype in a wave flume. The inline forces and pitch moments on the fixed cylinder were measured and Morison predictions on them were also performed with different wave kinematic models. Compared with the Morison results, larger force peaks and shallower force troughs are observed in the measurements. Besides, the wave front steepness is found to have a closer relationship with the non-dimensional inline force than the conventional wave steepness. Wavelet transform-based analyses were also successfully performed to reveal the local characteristics of the incident waves, inline forces and transfer functions between them. (C) 2016 Published by Elsevier B.V.

引用

页码：9 / 18

页数：10

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