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" Deterministic and Stochastic Properties of Sheared Suspensions. Latest Variations on a Theme by Albert Einstein " The dynamics of macroscopically homogeneous suspensions of neutrally buoyant non-Brownian spheres is investigated in the limit of vanishingly small Reynolds numbers. It is shown that these spheres execute a random motion which is chaotic in phase space. This gives rise to a rich class of properties such as shear-induced particle dispersion. The lecture will end with the presentation of some curious experimental observations which have remained unexplained. |