English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present a new development of the force-coupling method (FCM) to addressthe accurate simulation of a large number of interacting micro-swimmers. Ourapproach is based on the squirmer model, which we adapt to the FCM framework,resulting in a method that is suitable for simulating semi-dilute squirmersuspensions. Other effects, such as steric interactions, are considered withour model. We test our method by comparing the velocity field around a singlesquirmer and the pairwise interactions between two squirmers with exactsolutions to the Stokes equations and results given by other numerical methods.We also illustrate our method's ability to describe spheroidal swimmer shapesand biologically-relevant time-dependent swimming gaits. We detail thenumerical algorithm used to compute the hydrodynamic coupling between a largecollection ($10^4-10 ^5$) of micro-swimmers. Using this methodology, weinvestigate the emergence of polar order in a suspension of squirmers and showthat for large domains, both the steady-state polar order parameter and thegrowth rate of instability are independent of system size. These resultsdemonstrate the effectiveness of our approach to achieve near continuum-levelresults, allowing for better comparison with experimental measurements whilecomplementing and informing continuum models.

Large-scale simulation of steady and time-dependent active suspensions with the force-coupling method