We study the hydrodynamic interactions between colloids suspended in a compressible fluid inside a rigid channel. Using lattice-Boltzmann simulations and a simplified hydrodynamic theory, we find that the diffusive dynamics of density perturbations (sound) in the confined fluid give rise to particle correlations of exceptionally long spatial range and algebraic temporal decay. We examine the effect of these sound-mediated correlations on two-particle dynamics and on the collective dynamics of a quasi-one-dimensional suspension.
|Journal of Physics: Conference Series
|Published - 2012
|Microparticles in Stokes Flows - Symposium in Honor of Francois Feuillebois' 65th Birthday - Warsaw, Poland
Duration: 21 Aug 2011 → 24 Aug 2011