Collective dynamics in a binary mixture of hydrodynamically coupled microrotors

We study, numerically, the collective dynamics of self-rotating nonaligning particles by considering a monolayer of spheres driven by constant clockwise or counterclockwise torques. We show that hydrodynamic interactions alter the emergence of large-scale dynamical patterns compared to those observe...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2015-05, Vol.114 (18), p.188301-188301, Article 188301
Main Authors: Yeo, Kyongmin, Lushi, Enkeleida, Vlahovska, Petia M
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Density
Dynamical systems
Dynamics
Fluid flow
Hydrodynamics
Inclusions
Rotors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We study, numerically, the collective dynamics of self-rotating nonaligning particles by considering a monolayer of spheres driven by constant clockwise or counterclockwise torques. We show that hydrodynamic interactions alter the emergence of large-scale dynamical patterns compared to those observed in dry systems. In dilute suspensions, the flow stirred by the rotors induces clustering of opposite-spin rotors, while at higher densities same-spin rotors phase separate. Above a critical rotor density, dynamic hexagonal crystals form. Our findings underscore the importance of inclusion of the many-body, long-range hydrodynamic interactions in predicting the phase behavior of active particles.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.114.188301