Flocking turbulence of microswimmers in confined domains
Abstract
We extensively study the Toner-Tu-Swift-Hohenberg model of motile active matter by means of direct numerical simulations in a two-dimensional confined domain. By exploring the space of parameters of the model we investigate the emergence of a new state of active turbulence which occurs when the aligning interactions and the self-propulsion of the swimmers are strong. This regime of flocking turbulence is characterized by a population of few strong vortices, each surrounded by an island of coherent flocking motion. The energy spectrum of flocking turbulence displays a power-law scaling with an exponent which depends weakly on the model parameters. By increasing the confinement we observe that flocking turbulence becomes unstable: after a long transient, characterized by power-law distributed transition times, the system switches to the ordered state of a single giant vortex
Keywords
Cite
@article{arxiv.2212.11008,
title = {Flocking turbulence of microswimmers in confined domains},
author = {Leonardo Puggioni and Guido Boffetta and Stefano Musacchio},
journal= {arXiv preprint arXiv:2212.11008},
year = {2023}
}
Comments
12 pages, 12 figures