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Accueil > Actualités > Séminaires > Séminaires 2017

Lundi 10 juillet 2017 à 14h00 en salle K118

Pierre Suret et Stéphane Randoux, Université de Lille 1, laboratoire PhLAM

Titre/Title : Non Gaussian statistics in 1D random waves : a quantitative experimental comparison between hydrodynamics and optics (1ère partie)
Titre/Title : Optical Random Riemann Waves in Integrable Turbulence (2ère partie)

Contact : Nicolas Mordant (équipe EDT)

Résumé/Abstract :
Part1 : We compare two unique experimental results : the first one has been performed in a 270-meter wave tank and the other in optical fibers. In both cases, waves characterised by a JONSWAP spectrum and random Fourier phases have been launched at the input of the experimental device. The quantitative comparison, based on an appropriate scaling of the two experiments, shows a very good agreement between the statistics in hydrodynamics and optics. Spontaneous emergence of heavy tails in the probability density function of the wave amplitude is observed in both systems. The results demonstrate the universal features of rogue waves and provide a fundamental and explicit bridge between two important fields of research. Numerical simulations are also compared with experimental results.