Work

Nonequilibrium fluctuations of the direct cascade in surface quasi-geostrophic turbulence

Year: 2024

Type: article

Abstract: Turbulence is by definition an out-of-equilibrium phenomenon, with energy flowing continuously from the large, input scales, to the small, dissipative ones. Temporal fluctuations in this energy flux produce corrections to the Kolmogorov energy spectrum which can be predicted using a multiscale perturbative approach. Here we investigate this problem in the Surface Quasi-Geostrophic model of turbulence, comparing the theoretical predictions with the outcome of high-resolution direct numerical simulations.

Source: Physical Review Fluids

DOI: 10.1103/physrevfluids.9.094601

Authors: V. J. Valadão, T. Ceccotti, G. Boffetta, S. Musacchio

Institutions: Istituto Nazionale di Fisica Nucleare, Sezione di Torino, University of Turin

Language: English

Topic: Fluid Dynamics and Turbulent Flows

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Istituto Nazionale di Fisica Nucleare Sezione di Padova, European Commission, International Council of Shopping Centers Foundation, NextGenerationEU

Award: G8984777132