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Indexed by:期刊论文

Date of Publication:2009-09-01

Journal:CHINA OCEAN ENGINEERING

Included Journals:SCIE、EI、ISTIC、Scopus

Volume:23

Issue:3

Page Number:429-440

ISSN No.:0890-5487

Key Words:High-Order-Spectral (HOS); freak wave; wave focusing; Longuet-Higgins model; phase modulation

Abstract:Four focusing models for generation of freak waves are presented. An extreme wave focusing model is presented on the basis of the enhanced High-Order Spectral (HOS) method and the importance of the nonlinear wave-wave interaction is evaluated by comparison of the calculated results with experimental and theoretical data. Based on the modification of the Longuet-Higgins model, four wave models for generation of freak waves (a. extreme wave model + random wave model; b. extreme wave model + regular wave model; C. phase interval modulation wave focusing model; d. number modulation wave focusing model with the same phase) are proposed. By use of different energy distribution techniques in he four models, freak wave events am obtained with different H(max)/H(s) in finite space and time