On Natural Modulational Bandwidth of Deep-Water Surface Waves

被引：4

作者：

Babanin, Alexander, V ^{[1
]}

Onorato, Miguel ^{[2
,3
]}

Cavaleri, Luigi ^{[4
]}

机构：

[1] Univ Melbourne, Dept Infrastruct Engn, Melbourne, Vic 3010, Australia

[2] Univ Torino, Dipartimento Fis, I-10125 Turin, Italy

[3] INFN, I-10125 Turin, Italy

[4] ISMAR, Ist Sci Marine, I-30122 Venice, Italy

来源：

FLUIDS | 2019年 / 4卷 / 02期

基金：

欧盟地平线“2020”;

关键词：

modulational instability; nonlinear waves; wave groups; NONLINEAR SCHRODINGER-EQUATION; BREAKING; WIND; INSTABILITIES; STABILITY; AMPLITUDE; EVOLUTION; EVENTS; TRAINS;

D O I：

10.3390/fluids4020067

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We suggest that there exists a natural bandwidth of wave trains, including trains of wind-generated waves with a continuous spectrum, determined by their steepness. Based on laboratory experiments with monochromatic waves, we show that, if no side-band perturbations are imposed, the ratio between the wave steepness and bandwidth is restricted to certain limits. These limits are consistent with field observations of narrow-banded wind-wave spectra if a characteristic width of the spectral peak and average steepness are used. The role of the wind in such modulation is also discussed.

引用

页数：9

共 39 条

[1] EFFECTS OF RANDOMNESS ON STABILITY OF 2-DIMENSIONAL SURFACE WAVETRAINS [J].

ALBER, IE .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1978, 363 (1715) :525-546

[2] Wave Breaking in Directional Fields [J].

Babanin, A. V. ;

Waseda, T. ;

Kinoshita, T. ;

Toffoli, A. .

JOURNAL OF PHYSICAL OCEANOGRAPHY, 2011, 41 (01) :145-156

[3] BREAKING OF OCEAN SURFACE WAVES [J].

Babanin, A. V. .

ACTA PHYSICA SLOVACA, 2009, 59 (04) :305-535

[4] Predicting the breaking onset of surface water waves [J].

Babanin, Alexander ;

Chalikov, Dmitry ;

Young, Ian ;

Savelyev, Ivan .

GEOPHYSICAL RESEARCH LETTERS, 2007, 34 (07)

[5] Numerical and laboratory investigation of breaking of steep two-dimensional waves in deep water [J].

Babanin, Alexander V. ;

Chalikov, Dmitry ;

Young, I. R. ;

Savelyev, Ivan .

JOURNAL OF FLUID MECHANICS, 2010, 644 :433-463

[6] Breaking probabilities for dominant surface waves on water of finite constant depth [J].

Babanin, AV ;

Young, IR ;

Banner, ML .

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2001, 106 (C6) :11659-11676

[7]

Banner ML, 2002, J PHYS OCEANOGR, V32, P3364, DOI 10.1175/1520-0485(2002)032<3364:MMOOWB>2.0.CO

[8]

[9] DISINTEGRATION OF WAVE TRAINS ON DEEP WATER .1. THEORY [J].

BENJAMIN, TB ;

FEIR, JE .

JOURNAL OF FLUID MECHANICS, 1967, 27 :417-&

[10] EXPERIMENTAL-STUDY OF THE INFLUENCE OF WIND ON BENJAMIN-FEIR SIDE-BAND INSTABILITY [J].

BLIVEN, LF ;

HUANG, NE ;

LONG, SR .

JOURNAL OF FLUID MECHANICS, 1986, 162 :237-260

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