Fluctuations of energy flux in wave turbulence.
We report that the power driving gravity and capillary wave turbulence in a statistically stationary regime displays fluctuations much stronger than its mean value. We show that its probability density function (PDF) has a most probable value close to zero and involves two asymmetric roughly exponential tails. We understand the qualitative features of the PDF using a simple Langevin-type model.
Falcon
Eric
E
Matière et Systèmes Complexes, Université Paris Diderot-Paris 7, CNRS, 75 013 Paris, France.
Aumaître
Sébastien
S
Falcón
Claudio
C
Laroche
Claude
C
Fauve
Stéphan
S