Document Type

Article

Publication Date

4-10-2009

Publication Title

Physical Review Letters

Department

Thayer School of Engineering

Abstract

Blood microcirculation critically depends on the migration of red cells towards the flow centerline. We identify theoretically the ratio of the inner over the outer fluid viscosities λ as a key parameter. At low λ, the vesicle deforms into a tank-treading ellipsoid shape far away from the flow centerline. The migration is always towards the flow centerline, unlike drops. Above a critical λ, the vesicle tumbles or breaths and migration is suppressed. A surprising coexistence of two types of shapes at the centerline, a bulletlike and a parachutelike shape, is predicted.

DOI

10.1103/PhysRevLett.102.148102

Original Citation

Danker G, Vlahovska PM, Misbah C. Vesicles in Poiseuille flow. Phys Rev Lett. 2009 Apr 10;102(14):148102. doi: 10.1103/PhysRevLett.102.148102. Epub 2009 Apr 10. PMID: 19392488.

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