Experimental study of extreme waves based on nonlinear Schrodinger equation under background of a random sea

Liu, Junpeng1,2; Feng, Xingya1,2; Cui, Junnan1,2

2023-04-01

10.1063/5.0142180

PHYSICS OF FLUIDS   影响因子和分区

1070-6631

1089-7666

The Peregrine breather (PB) solution of the nonlinear Schrodinger equation is used to model ocean extreme waves in a water wave flume. Triangular spectral features of wave elevations are observed over the nonlinear evolution of the extreme waves, which can be applied for early detection of the formation of extreme waves. To model a more realistic sea state, a background random wave is superposed to the PB in this study. We examine the spectral features of the nonlinear wave evolution with random background waves by the spectral analysis. It is found that the wave elevations show similar triangular spectral features for extreme waves with a relatively mild background wave. Moreover, we find that the second harmonic elevations of the extreme waves also show triangular spectral features, suggesting the potential use of the second harmonic elevations (in addition to the first) for detection of the formation of extreme waves.

SCI ; EI

英语

第一 ; 通讯

Shenzhen City Technology and Innovation Committee[JCYJ20210324104606017]

Mechanics ; Physics

Mechanics ; Physics, Fluids & Plasmas

WOS:000972146700010

AIP Publishing

20231714007431

Feature extraction ; Nonlinear equations ; Ocean currents ; Water waves

Seawater, Tides and Waves:471.4

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou, Peoples R China

Liu, Junpeng,Feng, Xingya,Cui, Junnan. Experimental study of extreme waves based on nonlinear Schrodinger equation under background of a random sea[J]. PHYSICS OF FLUIDS,2023,35(4).

Liu, Junpeng,Feng, Xingya,&Cui, Junnan.(2023).Experimental study of extreme waves based on nonlinear Schrodinger equation under background of a random sea.PHYSICS OF FLUIDS,35(4).

Liu, Junpeng,et al."Experimental study of extreme waves based on nonlinear Schrodinger equation under background of a random sea".PHYSICS OF FLUIDS 35.4(2023).