Long-time tails in sheared fluids

Abstract

The long-time behaviors of the velocity autocorrelation function $C(t)$ for sheared fluids ^M are investigated theoretically and numerically. It is found the existence of the cross-overs of^M $C(t)$ from $t^{-d/2}$ to $t^{-d}$ ^M in sheared fluids of elastic particles without any thermostat, and from $t^{-d/2}$ to $t^{-(d+2)/2}$ ^M in both sheared fluids of elastic particles with a thermostat and sheared granular fluids,^M where $d$ is the spatial dimension. ^M The validity of the predictions has been confirmed by^M our numerical simulations.

4 pages, 2 figures

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• Critical behavior and correlations on scale-free small-world networks. Application to network design