Rheology of Confined Non-Brownian Suspensions

Physical Review Letters
Walter FornariFrancesco Picano

Abstract

We study the rheology of confined suspensions of neutrally buoyant rigid monodisperse spheres in plane-Couette flow using direct numerical simulations. We find that if the width of the channel is a (small) integer multiple of the sphere diameter, the spheres self-organize into two-dimensional layers that slide on each other and the effective viscosity of the suspension is significantly reduced. Each two-dimensional layer is found to be structurally liquidlike but its dynamics is frozen in time.

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Citations

Aug 9, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Chih-Tang LiaoYeng-Long Chen
Jan 14, 2017·Physical Review. E·Sascha Gerloff, Sabine H L Klapp
Jul 16, 2017·Physical Review. E·Sascha GerloffSabine H L Klapp
Sep 12, 2020·Soft Matter·Sascha GerloffSabine H L Klapp

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