Liquid Migration in Shear Thickening Suspensions Flowing through Constrictions
Date Available
2019-08-30Type
datasetData Creator
O'Neill, Rory ERoyer, John R
Poon, Wilson CK
Publisher
University of Edinburgh. School of Physics and AstronomyRelation (Is Referenced By)
https://arxiv.org/abs/1808.09950Metadata
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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.Description
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.The following licence files are associated with this item: