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Stresslets Induced by Active Swimmers.

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Michelin, Sébastien 

Abstract

Active particles disturb the fluid around them as force dipoles, or stresslets, which govern their collective dynamics. Unlike swimming speeds, the stresslets of active particles are rarely determined due to the lack of a suitable theoretical framework for arbitrary geometry. We propose a general method, based on the reciprocal theorem of Stokes flows, to compute stresslets as integrals of the velocities on the particle's surface, which we illustrate for spheroidal chemically active particles. Our method will allow tuning the stresslet of artificial swimmers and tailoring their collective motion in complex environments.

Description

Keywords

0915 Interdisciplinary Engineering

Journal Title

Phys Rev Lett

Conference Name

Journal ISSN

0031-9007
1079-7114

Volume Title

117

Publisher

American Physical Society (APS)
Sponsorship
Funding from the EU (CIG to E. L.) and by the French Ministry of Defense (DGA to S. M.) is gratefully acknowledged.