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Title: Fully developed and transient concentration profiles of particulate suspensions sheared in a cylindrical Couette cell
We experimentally investigate particle migration in a non-Brownian suspension sheared in a Taylor–Couette configuration and in the limit of vanishing Reynolds number. Highly resolved index-matching techniques are used to measure the local particulate volume fraction. In this wide-gap Taylor–Couette configuration, we find that for a large range of bulk volume fraction, $$\unicode[STIX]{x1D719}_{b}\in [20\,\%{-}50\,\%]$$ , the fully developed concentration profiles are well predicted by the suspension balance model of Nott & Brady ( J. Fluid Mech. , vol. 275, 1994, pp. 157–199). Moreover, we provide systematic measurements of the migration strain scale and of the migration amplitude which highlight the limits of the suspension balance model predictions.  more » « less
Award ID(s):
1554044 2050396
PAR ID:
10427359
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Journal of Fluid Mechanics
Volume:
862
ISSN:
0022-1120
Page Range / eLocation ID:
659 to 671
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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