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Article Dans Une Revue Physics of Fluids Année : 2022

Rheology and structure of a suspension of deformable particles in plane Poiseuille flow

Résumé

We present an experimental study of the rheology and structure of a confined suspension of deformable particles flowing in a quasi-two-dimensional Poiseuille flow. Thanks to a precise microfluidic viscosimetry technique combined with measurements of concentration profiles, our study provides the first experimental confirmation with three-dimensional particles of a strong relationship between structuring effects and rheology, previously only reported in numerical simulations of purely two-dimensional systems. In conditions where strong structuring effects take place due to confinement, the evolution of the effective viscosity with particle concentration (here, red blood cells) shows a remarkable succession of ranges of rapid growth and plateaus that are associated to qualitative transitions in the structure of the suspension.
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hal-03759060 , version 1 (23-08-2022)

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Vassanti Audemar, Thomas Podgorski, Gwennou Coupier. Rheology and structure of a suspension of deformable particles in plane Poiseuille flow. Physics of Fluids, 2022, 34 (4), pp.042013. ⟨10.1063/5.0087378⟩. ⟨hal-03759060⟩
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