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Title: Algebraic decay of velocity fluctuations near a wall
Author: Pagonabarraga Mora, Ignacio
Hagen, M. H. J.
Lowe, C. P.
Frenkel, Daan, 1948-
Keywords: Teoria del transport
Matèria condensada
Física estadística
Sistemes dinàmics diferenciables
Transport theory
Condensed matter
Statistical physics
Differentiable dynamical systems
Química física
Issue Date: 1998
Publisher: The American Physical Society
Abstract: Computer simulations of the dynamics of a colloidal particle suspended in a fluid confined by an interface show that the asymptotic decay of the velocity correlation functions is algebraic. The exponents of the long-time tails depend on the direction of motion of the particle relative to the surface, as well as on the specific nature of the boundary conditions. In particular, we find that for the angular velocity correlation function, the decay in the presence of a slip surface is faster than the one corresponding to a stick one. An intuitive picture is introduced to explain the various long-time tails, and the simulations are compared with theoretical expressions where available.
Note: Reproducció del document publicat a:
It is part of: Physical Review E, 1998, vol. 58, núm. 6, p. 7288-7295
ISSN: 1063-651X
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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