Space-time-resolved capillary wave turbulence

被引:38
作者
Berhanu, Michael [1 ]
Falcon, Eric [1 ]
机构
[1] Univ Paris Diderot, CNRS, UMR 7057, F-75013 Paris, France
关键词
WATER-SURFACE; RANGE;
D O I
10.1103/PhysRevE.87.033003
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
We report experiments on the full space- and time-resolved statistics of capillary wave turbulence at the air-water interface. The three-dimensional shape of the free interface is measured as a function of time by using the optical method of diffusing light photography associated with a fast camera. Linear and nonlinear dispersion relations are extracted from the spatiotemporal power spectrum of wave amplitude. When wave turbulence regime is reached, we observe power-law spectra both in frequency and in wave number whose exponents are found to agree with the predictions of capillary wave turbulence theory. Finally, the temporal dynamics of the spatial energy spectrum highlight the occurrence of stochastic bursts transferring wave energy through the spatial scales. DOI: 10.1103/PhysRevE.87.033003
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页数:6
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