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Giant vortex dynamics in confined active turbulence
- Source :
- Physical Review E 106 055103 (2022)
- Publication Year :
- 2022
-
Abstract
- We report the numerical evidence of a new state of active turbulence in confined domains. By means of extensive numerical simulations of the Toner-Tu-Swift-Hohenberg model for dense bacterial suspensions in circular geometry, we discover the formation a stable, ordered state in which the angular momentum symmetry is broken. This is achieved by self-organization of a turbulent-like flow into a single, giant vortex of the size of the domain. The giant vortex is surrounded by an annular region close to the boundary, characterized by small-scale, radial vorticity streaks. The average radial velocity profile of the vortex is found to be in agreement with a simple analytical prediction. We also provide an estimate of the temporal and spatial scales of a suitable experimental setup comparable with our numerical findings.<br />Comment: 5 pages, 4 figures
- Subjects :
- Physics - Fluid Dynamics
Nonlinear Sciences - Chaotic Dynamics
Subjects
Details
- Database :
- arXiv
- Journal :
- Physical Review E 106 055103 (2022)
- Publication Type :
- Report
- Accession number :
- edsarx.2206.09655
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevE.106.055103