Dynamic regimes of hydrodynamically coupled self-propelling particles

Details Dynamic regimes of hydrodynamically coupled self-propelling particles Dynamic regimes of hydrodynamically coupled self-propelling particles

2006-09-20

arxiv.org/abs/cond-mat/0609511v1

Europhys. Lett., 75 (6), pp. 999-1005 (2006)

Physics

Condensed Matter

Soft Condensed Matter

7 pages, 4 figures

Scientific paper

10.1209/epl/i2006-10201-y

We analyze the collective dynamics of self-propelling particles (spps) which move at small Reynolds numbers including the hydrodynamic coupling to the suspending solvent through numerical simulations. The velocity distribution functions show marked deviations from Gaussian behavior at short times, and the mean-square displacement at long times shows a transition from diffusive to ballistic motion for appropriate driving mechanism at low concentrations. We discuss the structures the spps form at long times and how they correlate to their dynamic behavior.

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