THIÉBAUD, Marine; AMAROUCHENE, Yacine; BICKEL, Thomas

doi:10.1088/1742-5468/2014/12/P12011

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THIÉBAUD, Marine
Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] [LIPhy]

AMAROUCHENE, Yacine
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

BICKEL, Thomas
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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Journal of Statistical Mechanics: Theory and Experiment. 2014-12, vol. 2014, n° 12, p. P12011 (1-11)

IOP Publishing

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Using Brownian dynamics simulations, we investigate the effect of an external flow on the fluctuations of a liquid–liquid interface for a wide range of shear rates. Although the statistics is Gaussian at low shear, we observe a transition to a nonlinear phenomenology above a critical shear rate. In particular, we show that statistical properties at high forcing share striking similarities with Burgers turbulence. An energy criterion allows us to predict the onset of non-Gaussian statistics. It also provides a simple explanation for the development of shock singularities through the exchange of kinetic energy from regions with positive to negative gradients in the shear direction.< Leer menos

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Liquid Films (theory)

Turbulence

Soft interfaces

Interfacial phenomena and wetting

Fluids in confined geometries

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Nonlinear Brownian dynamics of interfacial fluctuations in a shear flow

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