PROPERTIES OF FREAK WAVES INDUCED BY TWO KINDS OF NONLINEAR MECHANISMS

Aifeng Tao; Jinhai Zheng; Botao Chen; Hui Li; Ji Peng

doi:10.9753/icce.v33.waves.73

No. 33 (2012), Waves

No. 33 (2012)

PROPERTIES OF FREAK WAVES INDUCED BY TWO KINDS OF NONLINEAR MECHANISMS

Waves

https://doi.org/10.9753/icce.v33.waves.73

Published 2012-12-28

Aifeng Tao⁺⁻
Jinhai Zheng
Botao Chen
Hui Li
Ji Peng

Aifeng Tao

Hohai University

Jinhai Zheng

Botao Chen

Hui Li

Ji Peng

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Keywords

freak waves
nonlinear mechanism
wave-wave interaction
modulation instability
wave group interaction

How to Cite

Tao, A., Zheng, J., Chen, B., Li, H., & Peng, J. (2012). PROPERTIES OF FREAK WAVES INDUCED BY TWO KINDS OF NONLINEAR MECHANISMS. Coastal Engineering Proceedings, 1(33), waves.73. https://doi.org/10.9753/icce.v33.waves.73

Abstract

We investigate the dynamic and kinematic characteristics of freak waves using a direct phase-resolved nonlinear numerical method. The focus is on the understanding of the effects of different nonlinear wave-wave interactions on freak waves development and characteristics in the evolution process of modulated Stokes wave trains. Long time simulations of modulated Stokes wave trains, with different parameters, are obtained. Based on these simulations, we find that there are different kinds of freak waves in different time scales due to two kinds of different nonlinear mechanisms. One is the modulation instability and another related to the wave group interaction. Both the dynamic and kinematic characteristics of the different kinds of freak waves are distinct. Occurrence of freak waves (especially of large height) is usually correlated with broadband wave spectra.

https://doi.org/10.9753/icce.v33.waves.73

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References

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PROPERTIES OF FREAK WAVES INDUCED BY TWO KINDS OF NONLINEAR MECHANISMS

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