scholarly journals Wave turbulent statistics in non-weak wave turbulence

2011 ◽  
Vol 375 (48) ◽  
pp. 4280-4287 ◽  
Author(s):  
Naoto Yokoyama
Keyword(s):  
Wave Turbulence ◽  
Weak Wave ◽  
Turbulent Statistics

Turbulent structure beneath surface gravity waves sheared by the wind

1996 ◽  
Vol 328 ◽  
pp. 313-344 ◽  
Author(s):  
L. Thais ◽  
J. Magnaudet
Keyword(s):  
Gravity Waves ◽  
Wind Waves ◽  
Vertical Direction ◽  
Direct Interaction ◽  
Water Layer ◽  
Surface Gravity ◽  
Wave Turbulence ◽  
Orbital Contribution ◽  
Surface Gravity Waves ◽  
Turbulent Statistics

New experiments have been carried out in a large laboratory channel to explore the structure of turbulent motion in the water layer beneath surface gravity waves. These experiments involve pure wind waves as well as wind-ruffled mechanically generated waves. A submersible two-component LDV system has been used to obtain the three components of the instantaneous velocity field along the vertical direction at a single fetch of 26 m. The displacement of the free surface has been determined simultaneously at the same downstream location by means of wave gauges. For both types of waves, suitable separation techniques have been used to split the total fluctuating motion into an orbital contribution (i.e. a motion induced by the displacement of the surface) and a turbulent contribution. Based on these experimental results, the present paper focuses on the structure of the water turbulence. The most prominent feature revealed by the two sets of experiments is the enhancement of both the turbulent kinetic energy and its dissipation rate with respect to values found near solid walls. Spectral analysis provides clear indications that wave–turbulence interactions greatly affect energy transfers over a significant frequency range by imposing a constant timescale related to the wave-induced strain. For mechanical waves we discuss several turbulent statistics and their modulation with respect to the wave phase, showing that the turbulence we observed was deeply affected at both large and small scales by the wave motion. An analysis of the phase variability of the bursting suggests that there is a direct interaction between the waves and the underlying turbulence, mainly at the wave crests. Turbulence budgets show that production essentially takes place in the wavy region of the flow, i.e. above the wave troughs. These results are finally used to address the nature of the basic mechanisms governing wave–turbulence interactions.

scholarly journals Energy partition, scale by scale, in magnetic Archimedes Coriolis weak wave turbulence

2017 ◽  
Vol 95 (2) ◽  
Author(s):  
A. Salhi ◽  
F. S. Baklouti ◽  
F. Godeferd ◽  
T. Lehner ◽  
C. Cambon
Keyword(s):  
Wave Turbulence ◽  
Energy Partition ◽  
Weak Wave

Stationary Spectra of Weak Wave Turbulence

1992 ◽  
pp. 83-143 ◽  
Author(s):  
Vladimir E. Zakharov ◽  
Victor S. L’vov ◽  
Gregory Falkovich
Keyword(s):  
Wave Turbulence ◽  
Weak Wave

scholarly journals On wave turbulence in MHD

2001 ◽  
Vol 8 (3) ◽  
pp. 141-150 ◽  
Author(s):  
S. Galtier ◽  
S. V. Nazarenko ◽  
A. C. Newell
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Acoustic Waves ◽  
Wave Turbulence ◽  
Spectral Densities ◽  
Wave Interactions ◽  
Weak Wave ◽  
Weakly Compressible ◽  
Wave Resonance

Abstract. We describe the fundamental differences between weak (wave) turbulence in incompressible and weakly compressible MHD at the level of three-wave interactions. The main difference is in the structure of the resonant manifolds and the mechanisms of redistribution of spectral densities along the applied magnetic field B0. Similar to pure acoustic waves, a three-wave resonance between collinear wave vectors is observed but, in addition, we also have a resonance through tilted planes and spheres. The properties of resonances and their consequences for the asymptotics are also discussed.

Statistical Description of Weak Wave Turbulence

1992 ◽  
pp. 63-82 ◽  
Author(s):  
Vladimir E. Zakharov ◽  
Victor S. L’vov ◽  
Gregory Falkovich
Keyword(s):  
Wave Turbulence ◽  
Weak Wave

scholarly journals Transition from weak wave turbulence to soliton gas

2017 ◽  
Vol 2 (9) ◽  
Author(s):  
Roumaissa Hassaini ◽  
Nicolas Mordant
Keyword(s):  
Wave Turbulence ◽  
Weak Wave

Aspects of Two-Mode Probability Density Function in Weak Wave Turbulence

2009 ◽  
Vol 78 (8) ◽  
pp. 084403 ◽  
Author(s):  
Yeontaek Choi ◽  
Sang Gyu Jo ◽  
Ho Il Kim ◽  
Sergey V. Nazarenko
Keyword(s):  
Probability Density Function ◽  
Probability Density ◽  
Density Function ◽  
Wave Turbulence ◽  
Weak Wave
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