Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2009-09-01

Journal: CHINA OCEAN ENGINEERING

Included Journals: Scopus、ISTIC、EI、SCIE

Volume: 23

Issue: 3

Page Number: 429-440

ISSN: 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