Journal Article

FZJ-2018-07148

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Shear thinning and shear thickening of a confined suspension of vesicles

Nait Ouhra, A. (Corresponding author) ; Farutin, A. ; Aouane, O.FZJ* ; Ez-Zahraouy, H. ; Benyoussef, A. ; Misbah, C.

2018
Inst. Woodbury, NY

This record in other databases:      

Please use a persistent id in citations: http://hdl.handle.net/2128/20766  doi:10.1103/PhysRevE.97.012404

Abstract: Widely regarded as an interesting model system for studying flow properties of blood, vesicles are closed membranes of phospholipids that mimic the cytoplasmic membranes of red blood cells. In this study we analyze the rheology of a suspension of vesicles in a confined geometry: the suspension, bound by two planar rigid walls on each side, is subject to a shear flow. Flow properties are then analyzed as a function of shear rate ˙γ, the concentration of the suspension ϕ, and the viscosity contrast λ=ηin/ηout, where ηin and ηout are the fluid viscosities of the inner and outer fluids, respectively. We find that the apparent (or effective viscosity) of the suspension exhibits both shear thinning (decreasing viscosity with shear rate) or shear thickening (increasing viscosity with shear rate) in the same concentration range. The shear thinning or thickening behaviors appear as subtle phenomena, dependant on viscosity contrast λ. We provide physical arguments on the origins of these behaviors.

---

Contributing Institute(s):

1. Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien (IEK-11)

Research Program(s):

1. 121 - Solar cells of the next generation (POF3-121) (POF3-121)

Appears in the scientific report 2018

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

---