@Article{CiCP-18-3,
author = {},
title = {Numerical Simulation of the Motion of Inextensible Capsules in Shear Flow Under the Effect of the Natural State},
journal = {Communications in Computational Physics},
year = {2015},
volume = {18},
number = {3},
pages = {787--807},
abstract = {<p style="text-align: justify;">In this paper, a computational model for the natural state of an inextensible
capsule has been successfully combined with a spring model of the capsule membrane
to simulate the motion of the capsule in two-dimensional shear flow. Besides the viscosity
ratio of the internal fluid and external fluid of the capsule, the natural state also
plays a role for having the transition between two well known motions, tumbling and
tank-treading (TT) with the long axis oscillates about a fixed inclination angle (a swinging
mode), when varying the shear rate. Between tumbling and tank-treading, the
intermittent behavior has been obtained for the capsule with a biconcave rest shape.
The estimated critical value of the swelling ratio for having the intermittent transition
behavior is less than 0.7, i.e., the capsules with rest shape closer to a full disk do not
have the intermittent behavior in shear flow. The intermittent dynamics of the capsule
in the transition region is a mixture of tumbling and TT with a swinging mode. Just
like the motion of TT with a swing mode, which can be viewed as a tank-treading with
an incomplete tumbling, the membrane tank-treads backward and forward within a
small range during the tumbling motion.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.260714.260315a},
url = {https://global-sci.com/article/80340/numerical-simulation-of-the-motion-of-inextensible-capsules-in-shear-flow-under-the-effect-of-the-natural-state}
}