期刊
PHYSICS OF FLUIDS
卷 23, 期 11, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.3660268
关键词
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资金
- National Science Foundation [CBET-0746285]
- East Asia and Pacific Summer Institute
- Grants-in-Aid for Scientific Research [23220012] Funding Source: KAKEN
We use numerical simulations to probe the dynamics of concentrated suspensions of spherical microswimmers interacting hydrodynamically. Previous work in the dilute limit predicted orientational instabilities of aligned suspensions for both pusher and puller swimmers, which we confirm computationally. Unlike previous work, we show that isotropic suspensions of spherical swimmers are also always unstable. Both types of initial conditions develop long-time polar order of a nature which depends on the hydrodynamic signature of the swimmer but very weakly on the volume fraction up to very high volume fractions. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3660268]
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