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1998

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/18822

Algebraic decay of velocity fluctuations near a wall

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http://dx.doi.org/10.1103/PhysRevE.58.7288

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.

Subject

Teoria del transport, Matèria condensada, Reologia, Física estadística, Termodinàmica, Sistemes dinàmics diferenciables

Subject (English)

Transport theory, Condensed matter, Rheology, Statistical physics, Thermodynamics, Differentiable dynamical systems, Química física

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

PAGONABARRAGA MORA, Ignacio, et al. Algebraic decay of velocity fluctuations near a wall. Physical Review E. 1998. Vol. 58, num. 6, pags. 7288-7295. ISSN 1063-651X. [consulted: 9 of August of 2026]. Available at: https://hdl.handle.net/2445/18822

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