Turbulent-like fluctuations in quasistatic flow of granular media

Details Turbulent-like fluctuations in quasistatic flow of granular media Turbulent-like fluctuations in quasistatic flow of granular media

2002-05-29

arxiv.org/abs/cond-mat/0205618v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevLett.89.064302

We analyze particle velocity fluctuations in a simulated granular system subjected to homogeneous quasistatic shearing. We show that these fluctuations share the following scaling characteristics of fluid turbulence in spite of their different physical origins: 1) Scale-dependent probability distribution with non-Guassian broadening at small time scales; 2) Power-law spectrum, reflecting long-range correlations and the self-affine nature of the fluctuations; 3) Superdiffusion with respect to the mean background flow.

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