Numerical simulation and mechanism analysis of freak waves

ZHANG Yunqiu; ZHANG Ningchuan; HU Jinpeng

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ZHANG Yunqiu,ZHANG Ningchuan,HU Jinpeng.Numerical simulation and mechanism analysis of freak waves[J].Acta Oceanologica Sinica,2007,(5):116-124

Numerical simulation and mechanism analysis of freak waves

投稿时间：2006-12-12 修订日期：2007-04-05

DOI：

中文关键词: freak waves nonlinear Schroe dinger equation pseudo-spectral method sideband instability numerical model

英文关键词:freak waves nonlinear Schroe dinger equation pseudo-spectral method sideband instability numerical model

基金项目:

作者	单位	E-mail
ZHANG Yunqiu	State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China	zhyunqiu@student.dlut.edu.cn
ZHANG Ningchuan	State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
HU Jinpeng	College of Traffic and Communications, South China University of Technology, Guangzhou 510640, China

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中文摘要:

A numerical wave model based on the modified fourth-order nonlinear Schroe dinger equation (mNLSE) in deep water was developed to simulate the formation of freak waves and a standard split-step, pseudo-spectral method was used to solve the equation.The validation of the model is firstly verified, then the simulation of freak waves was performed by changing sideband conditions, and the variation of wave energy was also analyzed in the evolution.The results indicate that Benjamin-Feir instability (sideband instability) is an important mechanism for freak wave formation.

英文摘要:

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