Transport and collective dynamics in suspensions of confined swimming particles

被引：328

作者：

Hernandez-Ortiz, JP ^{[1
]}

Stoltz, CG ^{[1
]}

Graham, MD ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Biol & Chem Engn, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.95.204501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Direct simulations of large populations of confined hydrodynamically interacting swimming particles at low Reynolds number are performed. Hydrodynamic coupling between the swimmers leads to large-scale coherent vortex motions in the flow and regimes of anomalous diffusion that are consistent with experimental observations. At low concentrations, swimmers propelled from behind (like spermatazoa) strongly migrate toward solid surfaces in agreement with simple theoretical considerations; at higher concentrations this localization is disrupted by the large-scale coherent motions.

引用

页数：4

共 25 条

[1] MIGRATION OF MACROMOLECULES UNDER FLOW - THE PHYSICAL ORIGIN AND ENGINEERING IMPLICATIONS [J].

AGARWAL, US ;

DUTTA, A ;

MASHELKAR, RA .

CHEMICAL ENGINEERING SCIENCE, 1994, 49 (11) :1693-1717

[2]

Bray D., 2001, Cell Movements: From Molecules to Motility, V2nd

[3] VARIANCE IN THE SEDIMENTATION SPEED OF A SUSPENSION [J].

CAFLISCH, RE ;

LUKE, JHC .

PHYSICS OF FLUIDS, 1985, 28 (03) :759-760

[4] Self-concentration and large-scale coherence in bacterial dynamics [J].

Dombrowski, C ;

Cisneros, L ;

Chatkaew, S ;

Goldstein, RE ;

Kessler, JO .

PHYSICAL REVIEW LETTERS, 2004, 93 (09) :098103-1

[5] SPERM MOTILITY IN THE PRESENCE OF BOUNDARIES [J].

FAUCI, LJ ;

MCDONALD, A .

BULLETIN OF MATHEMATICAL BIOLOGY, 1995, 57 (05) :679-699

[6] Onset of collective and cohesive motion -: art. no. 025702 [J].

Grégoire, G ;

Chaté, H .

PHYSICAL REVIEW LETTERS, 2004, 92 (02) :4

[7] Active and passive particles: Modeling beads in a bacterial bath [J].

Grégoire, G. ;

Chaté, H. ;

Tu, Y. .

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2001, 64 (1 I) :1-011902

[8] Rheology of active-particle suspensions [J].

Hatwalne, Y ;

Ramaswamy, S ;

Rao, M ;

Simha, RA .

PHYSICAL REVIEW LETTERS, 2004, 92 (11) :118101-1

[9]

HERNANDEZORTIZ JP, IN PRESS

[10] Enhanced diffusion due to motile bacteria [J].

Kim, MJ ;

Breuer, KS .

PHYSICS OF FLUIDS, 2004, 16 (09) :L78-L81

← 1 2 3 →