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Large-scale sweeping of small-scale eddies in turbulence : A filtering approach

Title data

Drivas, Theodore D. ; Johnson, Perry L. ; Lalescu, Cristian ; Wilczek, Michael:
Large-scale sweeping of small-scale eddies in turbulence : A filtering approach.
In: Physical Review Fluids. Vol. 2 (2017) Issue 10 . - No. 104603.
ISSN 2469-990X
DOI: https://doi.org/10.1103/PhysRevFluids.2.104603

Abstract in another language

We present an analysis of the Navier-Stokes equations based on a spatial filtering technique to elucidate the multiscale nature of fully developed turbulence. In particular, the advection of a band-pass-filtered small-scale contribution by larger scales is considered, and rigorous upper bounds are established for the various dynamically active scales. The analytical predictions are confirmed with direct numerical simulation data. The results are discussed with respect to the establishment of effective large-scale equations valid for turbulent flows.

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
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 23 Feb 2022 12:31
Last Modified: 23 Feb 2022 12:31
URI: https://eref.uni-bayreuth.de/id/eprint/67583