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Oscillation dynamics of embolic microspheres in flows with red blood cell suspensions
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10.1063/1.4768889
/content/aip/journal/jap/112/12/10.1063/1.4768889
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/12/10.1063/1.4768889
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic depiction of the problem. Representative images of embolic beads in the absence (a) and in the presence (b) of red blood cells. (c) Geometric delineation of the problem.

Image of FIG. 2.
FIG. 2.

Migration of embolic microspheres in the presence or absence of red blood cells as obtained from experiments. (a) Lateral positions (equilibrium and oscillatory) and (b) axial velocities of microspheres as the function of relative particle diameter ().

Image of FIG. 3.
FIG. 3.

Experimental variations in dynamic behavior of migrating microspheres. (a) Representative tracks of beads with at (star); (circle); and (square). (b) Frequency spectra of averaged bead (with ) tracks at different Reynolds numbers. Y-axis range is 10−6 to 1 in log scale. %. (c) Representative image sequence showing bead oscillation (interframe time interval = 200 ms). Scale bar is 400 μm.

Image of FIG. 4.
FIG. 4.

Number ensemble representation of bead oscillation in capillary. (a) Constancy of statistical distribution of beads () along the channel length for % and . (b) Statistical distribution of beads () for % and .

Image of FIG. 5.
FIG. 5.

Dependence of lateral migration on flow Reynolds number: (a) for % and (b) for %. At least five independently acquired data points have been plotted for each and . For %, larger microspheres () show oscillating dynamics if .

Image of FIG. 6.
FIG. 6.

Combined effect of flow Reynolds number and hematocrit level. (a) Dependence of lateral migration on flow Reynolds number at different levels, for . At least five independently acquired data points have been plotted for each value. (b) Variation in average oscillation amplitude (normalized by channel diameter) of microspheres with in the parametric-space of and .

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/content/aip/journal/jap/112/12/10.1063/1.4768889
2012-12-18
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Oscillation dynamics of embolic microspheres in flows with red blood cell suspensions
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/12/10.1063/1.4768889
10.1063/1.4768889
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