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@ARTICLE{McWhirter:22537,
author = {McWhirter, J.L. and Noguchi, H. and Gompper, G.},
title = {{O}rdering and arrangement of deformed red blood cells in
flow through microcapillaries},
journal = {New journal of physics},
volume = {14},
issn = {1367-2630},
address = {[Bad Honnef]},
publisher = {Dt. Physikalische Ges.},
reportid = {PreJuSER-22537},
pages = {085026},
year = {2012},
note = {We thank I O Gotze, T Auth and M Peltomaki for helpful
discussions. Support of this work by the DFG through the
priority program 'Nano- and Microfluidics' is gratefully
acknowledged.},
abstract = {The shapes and alignment of elastic vesicles similar to red
blood cells (RBCs) in cylindrical capillary flow are
investigated by mesoscopic hydrodynamic simulations. We
study the collective flow behavior of many RBCs, where the
capillary diameter is comparable to the diameter of the
RBCs. Two essential control parameters are the RBC volume
fraction (the tube hematocrit, H-T), and the suspension flow
velocity. Depending on H-T, flow velocity and capillary
radius, the RBC suspension exhibits a disordered phase and
two distinct ordered phases, consisting of a single file of
parachute-shaped cells and a zigzag arrangement of
slipper-shaped cells, respectively. We argue that thermal
fluctuations, included in the simulation method, coupled to
hydrodynamic flows are important contributors to the RBC
morphology. We examine the changes to the phase structures
when the capillary diameter and the material properties
(bending rigidity kappa and stretching modulus mu) of the
model RBCs are varied, constructing phase diagrams for each
case. We focus on capillary diameters, which range from
about 1.0 to about 1.4 times the RBC long diameter. For the
smallest capillary diameter, the single-file arrangement
dominates; for the largest diameter, the ordered zigzag
arrangement begins to loose its stability and alternates
with an asymmetric structure with two lanes of differently
oriented cells. In simulations with long capillaries, the
coexistence of different phases can be observed.},
keywords = {J (WoSType)},
cin = {IAS-2 / ICS-2},
ddc = {530},
cid = {I:(DE-Juel1)IAS-2-20090406 / I:(DE-Juel1)ICS-2-20110106},
pnm = {BioSoft: Makromolekulare Systeme und biologische
Informationsverarbeitung},
pid = {G:(DE-Juel1)FUEK505},
shelfmark = {Physics, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000308362800001},
doi = {10.1088/1367-2630/14/8/085026},
url = {https://juser.fz-juelich.de/record/22537},
}