Physical Review Letters
Thayer School of Engineering
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.
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.
Dartmouth Digital Commons Citation
Danker, Gerrit; Vlahovska, Petia M.; and Misbah, Chaouqi, "Vesicles in Poiseuille Flow" (2009). Dartmouth Scholarship. 3536.