Title data
Lalescu, Cristian ; Wilczek, Michael:
Transitions of turbulent superstructures in generalized Kolmogorov flow.
In: Physical Review Research.
Vol. 3
(2021)
Issue 2
.
- L022010.
ISSN 2643-1564
DOI: https://doi.org/10.1103/PhysRevResearch.3.L022010
Abstract in another language
Self-organized large-scale flow structures occur in a wide range of turbulent flows. Yet, their emergence, dynamics, and interplay with small-scale turbulence are not well understood. Here, we investigate such self-organized turbulent superstructures in three-dimensional turbulent Kolmogorov flow with largescale drag. Through extensive simulations, we uncover their low-dimensional dynamics featuring transitions between several stable and metastable large-scale structures as a function of the damping parameter. The main dissipation mechanism for the turbulent superstructures is the generation of small-scale turbulence, whose local structure depends strongly on the large-scale flow. Our results elucidate the generic emergence and low-dimensional dynamics of large-scale flow structures in fully developed turbulence and reveal a strong coupling of large- and small-scale flow features.
Further data
Item Type: | Article in a journal |
---|---|
Refereed: | Yes |
Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics I > Chair Theoretical Physics I - Univ.-Prof. Dr. Michael Wilczek Profile Fields > Advanced Fields > Nonlinear Dynamics Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics I Profile Fields Profile Fields > Advanced Fields |
Result of work at the UBT: | No |
DDC Subjects: | 500 Science > 530 Physics |
Date Deposited: | 23 Feb 2022 15:21 |
Last Modified: | 06 Feb 2024 14:37 |
URI: | https://eref.uni-bayreuth.de/id/eprint/67604 |