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Long-range dynamic correlations in confined suspensions

Authors
  • Frydel, Derek
  • Diamant, Haim
Type
Published Article
Publication Date
Jul 03, 2010
Submission Date
Jan 12, 2010
Identifiers
DOI: 10.1103/PhysRevLett.104.248302
Source
arXiv
License
Yellow
External links

Abstract

Hydrodynamic interactions between particles confined in a liquid-filled linear channel are known to be screened beyond a distance comparable to the channel width. Using a simple analytical theory and lattice-Boltzmann simulations, we show that the hydrodynamic screening is qualitatively modified when the time-dependent response and finite compressibility of the host liquid are taken into account. Diffusive compression modes in the confined liquid cause the particles to have velocity correlations of unbounded range, whose amplitude decays with time only as $t^{-3/2}$.

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