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Self-organization of red blood cell suspensions under confined 2D flows

Abstract : Dynamic self-organized structures with long-range order have been observed in emulsions and suspensions of particles under confined flows. Here, experiments on red blood cell suspensions in quasi-2D confined flows and numerical simulations were combined to explore long-distance self-organization as a function of the channel width, the red blood cell concentration and the flow rate. They reveal and quantitatively describe the existence of red blood cell long-¬-range alignments and heterogeneous cross-stream concentration profiles characterized by red blood cell-¬-enriched bands parallel to the flow. Numerical simulations show that, in addition to the degree of lateral confinement, the key factor for the structural self-organization of a suspension of particles under a confined flow is the deformability of the constituent particles.
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Submitted on : Thursday, January 30, 2020 - 3:19:24 PM
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Cécile Iss, Dorian Midou, Alexis Moreau, Delphine Held, Anne Charrier, et al.. Self-organization of red blood cell suspensions under confined 2D flows. Soft Matter, Royal Society of Chemistry, 2019, ⟨10.1039/C8SM02571A⟩. ⟨hal-02080356⟩



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