Dynamics of a Multicomponent Vesicle in Stokes Flow

Event Sponsor: 
Mathmatics and Computer Science Division Seminar
Start Date: 
Jul 26 2019 - 1:30pm
Building/Room: 
Building 240/Room 1404-1405
Location: 
Argonne National Laboratory
Speaker(s): 
Shuwang Li
Speaker(s) Title: 
Illinois Institute of Technology
Host: 
Oana Marin

We study the nonlinear, nonlocal dynamics of two-dimensional vesicles in a time-dependent, incompressible viscous flow at a finite temperature. We discuss two problems: (1) a novel phase-treading dynamics in a shear flow, which is induced by the phase decomposition of a lipid mixture; (2) a transient wrinkling dynamics in an extension flow, which is induced by a negative surface tension when the flow direction is reversed. We compute this problem using a stochastic immersed boundary approach and find that thermal fluctuations actually have the ability to attenuate variability of the characteristic wavelength of wrinkling by exciting more wrinkling modes.

Miscellaneous Information: 

This Seminar will be streamed. See details at https://anlpress.cels.anl.gov/cels-seminars/

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