Work

Nonlinear Superposition of Direct and Inverse Cascades in Two-Dimensional Turbulence Forced at Large and Small Scales

Year: 2011

Type: article

Abstract: We inquire about the properties of 2D Navier-Stokes turbulence simultaneously forced at small and large scales. The background motivation comes by observational results on atmospheric turbulence. We show that the velocity field is amenable to the sum of two auxiliary velocity fields forced at large and small scale and exhibiting a direct enstrophy and an inverse-energy cascade, respectively. Remarkably, the two auxiliary fields reconcile universal properties of fluxes with positive statistical correlation in the inertial range.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.107.174502

Authors: Massimo Cencini, Paolo Muratore-Ginanneschi, Angelo Vulpiani

Institutions: Institute for Complex Systems, National Research Council, University of Helsinki, Sapienza University of Rome

Language: English

Topic: Fluid Dynamics and Turbulent Flows

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: National Science Foundation

OpenAlex ID: W2004192546

FWCI: 1.931

Cites: 33

Cited by: 14

Related to: 10