Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session T25: Constraint-based Rheology of Sense Suspensions and Granular Materials I
11:30 AM–2:18 PM,
Thursday, March 17, 2022
Room: McCormick Place W-187A
Sponsoring
Units:
DSOFT GSNP
Chair: Abhinendra Singh, University of Chicago
Abstract: T25.00012 : Rheology of dense, bidispersed particles suspended in a perturbed shear-flow
2:06 PM–2:18 PM
Presenter:
Alessandro Monti
(Okinawa Institute of Science and Technology)
Authors:
Alessandro Monti
(Okinawa Institute of Science and Technology)
Marco Edoardo Rosti
(Okinawa Institute of Science & Technology)
To control the variation of the shear-thickening behaviour, we perturbed the underline shear-flow by adding to the velocity vector a simple sinusoidal wave of the form ui = A sin(kj xj), where ui is the ith velocity component, A is the amplitude of the wave and the pair kj,xj are the wavenumber and the spatial coordinate in the jth direction, respectively; the resulting parametric study considers six different scenarios. We select the waves that cause significant modifications to the rheological response and we carry out a parametric study varying the amplitude and wavenumber. The study has been performed numerically by means of a validated and publicly available software CFF-Ball-0x that tackles the Newton-Euler equations governing the dynamics of the particles.
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