000014642 001__ 14642
000014642 005__ 20161115100157.0
000014642 04107 $$aeng
000014642 046__ $$k2016-08-21
000014642 100__ $$aWilson, Helen
000014642 24500 $$aSimulations of a heavy ball falling through a sheared suspension

000014642 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014642 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014642 506__ $$arestricted
000014642 520__ $$2eng$$aIn recent experiments, Blanc, Lemaire and Peters dropped a heavy sphere through a concentrated suspension of smaller, neutrally buoyant particles. They found that the application of a lateral oscillatory shear flow caused the heavy ball to fall faster on average; and that for highly concentrated suspensions, at certain moments of the cycle of shear oscillation, the heavy ball moves upwards. We use Accelerated Stokesian Dynamics to model these experiments and other related scenarios. We show how the motion of the heavy particle depends on two key dimensionless parameters: the frequency of the oscillations (relative to a typical settling time) and the strength of repulsive interparticle forces, such as DLVO, relative to the buoyancy-adjusted weight of the heavy ball. At the conference, we will also present results on the dependence on oscillation amplitude, suspension concentration, and the orientation of the shear flow.

000014642 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014642 653__ $$a

000014642 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014642 720__ $$aWilson, Helen
000014642 8560_ $$ffischerc@itam.cas.cz
000014642 8564_ $$s86706$$uhttps://invenio.itam.cas.cz/record/14642/files/TS.FM10-2.02.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1154, code TS.FM10-2.02
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000014642 962__ $$r13812
000014642 980__ $$aPAPER