English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We study the shearing rheology of dense suspensions of elastic capsules,taking aggregation-free red blood cells as a physiologically relevant example.Particles are non-Brownian and interact only via hydrodynamics and short-rangerepulsive forces. An analysis of the different stress mechanisms in thesuspension shows that the viscosity is governed by the shear elasticity of thecapsules, whereas the repulsive forces are subdominant. Evidence for a dynamicyield stress above a critical volume fraction is provided and related to theelastic properties of the capsules. The shear stress is found to follow acritical jamming scenario and is rather insensitive to thetumbling-to-tank-treading transition. The particle pressure and normal stressdifferences display some sensitivity to the dynamical state of the cells andexhibit a characteristic scaling, following the behavior of a single particle,in the tank-treading regime. The behavior of the viscosity in the fluid phaseis rationalized in terms of effective medium models. Furthermore, the role ofconfinement effects, which increase the overall magnitude and enhance theshear-thinning of the viscosity, is discussed.

Rheology of dense suspensions of elastic capsules: normal stresses, yield stress, jamming and confinement effects