000014969 001__ 14969
000014969 005__ 20161115100207.0
000014969 04107 $$aeng
000014969 046__ $$k2016-08-21
000014969 100__ $$aSaintillan, David
000014969 24500 $$aTransition to spontaneous directional flows in confined active fluids

000014969 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014969 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014969 506__ $$arestricted
000014969 520__ $$2eng$$aRecent experimental, theoretical and computational studies have shown that confinement can profoundly affect self-organization in concentrated active suspensions leading to striking features such as formation of steady and spontaneous vortices in radial confinement. Motivated by these observations, we study the two-dimensional dynamics in a confined suspension of biologically active particles using a mean-field kinetic theory for which we developed a novel numerical solver. The dynamics in both circular and racetrack geometries are investigated, where we show that the interplay of confinement and activity can stabilize collective motion into spontaneous flowing states, including steady vortices, unidirectional motion, and travelling waves. Our simulation results are also shown to compare favorably with predictions from a linear stability analysis.

000014969 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014969 653__ $$a

000014969 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014969 720__ $$aSaintillan, David
000014969 8560_ $$ffischerc@itam.cas.cz
000014969 8564_ $$s183216$$uhttps://invenio.itam.cas.cz/record/14969/files/TS.MS02-2.02.pdf$$yOriginal version of the author's contribution as presented on CD,  page 78, code TS.MS02-2.02
.
000014969 962__ $$r13812
000014969 980__ $$aPAPER