Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2009-09-04
Phys. Rev. E 81, 031602 (2010)
Physics
Condensed Matter
Soft Condensed Matter
14 pages, 4 figures
Scientific paper
10.1103/PhysRevE.81.031602
The steady state properties of an interface in a stationary Couette flow are addressed within the framework of fluctuating hydrodynamics. Our study reveals that thermal fluctuations are driven out of equilibrium by an effective shear rate that differs from the applied one. In agreement with experiments, we find that the mean square displacement of the interface is strongly reduced by the flow. We also show that nonequilibrium fluctuations present a certain degree of universality in the sense that all features of the fluids can be factorized into a single control parameter. Finally, the results are discussed in the light of recent experimental and numerical studies.
Bickel Thomas
Thiébaud Marine
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