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Shear‐induced migration and axial development of particles in channel flows of non‐Brownian suspensions
Author(s) -
Rashedi Ahmadreza,
Sarabian Mohammad,
Firouznia Mohammadhossein,
Roberts Dallas,
Ovarlez Guillaume,
Hormozi Sarah
Publication year - 2020
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.17100
Subject(s) - brownian motion , mechanics , volume fraction , newtonian fluid , shear (geology) , scaling , velocimetry , particle (ecology) , materials science , rheology , physics , optics , geometry , geology , composite material , mathematics , oceanography , quantum mechanics
We present an experimental study on the shear‐induced migration and axial development of particles in the channel flows of non‐Brownian suspensions. The suspending fluid is Newtonian. We investigate fracturing flows with a Hele‐Shaw type scaling through building a unique channel setup and an advanced optical system. The local particle concentration profiles are measured via the refractive‐index matching technique for a wide range of bulk volume fraction, that is, 0.1 ≤ ϕ ¯ b ≤ 0.5 . Simultaneously, the particle image velocimetry is performed to determine the velocity profile of the particle phase. We compare our experimental results with the available two‐phase continuum frameworks and show discrepancies and similarities in the fully developed and axial development of the solid volume fraction profiles. We discuss directions in which the continuum frameworks require improvements.