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Liquid Migration in Shear Thickening Suspensions Flowing through Constrictions

Dataset

Related Edinburgh Organisations

PublisherEdinburgh DataShare
Date made available30 Aug 2019

Abstract

Dense suspensions often become more dilute as they move downstream through a constriction. We find that as a shear-thickening suspension is extruded through a narrow die and undergoes such liquid migration, the extrudate maintains a steady concentration, independent of time or initial concentration. At low volumetric flow rate Q, this concentration is a universal function of Q/r^3, a characteristic shear rate in the die of radius r, and coincides with the critical input concentration for the onset of liquid migration. We predict this function by coupling the Wyart-Cates model for shear thickening and the 'suspension balance model' for solvent permeation through particles.

Data Citation

O'Neill, Rory E; Royer, John R; Poon, Wilson CK. (2019). Liquid Migration in Shear Thickening Suspensions Flowing through Constrictions, [dataset]. University of Edinburgh. School of Physics and Astronomy. https://doi.org/10.7488/ds/2617.

ID: 110510587