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arXiv · cond-mat/0611382

Swinging and Tumbling of Fluid Vesicles in Shear Flow

Hiroshi Noguchi·Gerhard Gompper
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Abstract

The dynamics of fluid vesicles in simple shear flow is studied using mesoscale simulations of dynamically-triangulated surfaces, as well as a theoretical approach based on two variables, a shape parameter and the inclination angle, which has no adjustable parameters. We show that between the well-known tank-treading and tumbling states, a new ``swinging'' state can appear. We predict the dynamic phase diagram as a function of the shear rate, the viscosities of the membrane and the internal fluid, and the reduced vesicle volume. Our results agree well with recent experiments.

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Hiroshi Noguchi, Gerhard Gompper. 2006-11-14. Swinging and Tumbling of Fluid Vesicles in Shear Flow. https://doi.org/10.1103/physrevlett.98.128103

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