Work

Correlations of Vorticity Inside a Coherent Vortex

Year: 2023

Type: article

Abstract: We investigate fluctuations of vorticity inside a coherent vortex generated by the inverse energy cascade in two-dimensional turbulence. Temporal and spatial correlations can be characterized by the pair correlation function. The interaction of fluctuations leads to a nonzero third moment of vorticity. We analyze the pair correlation function and the third moment using a model in which the pumping is short-correlated in time and derive explicit expressions for the Gaussian spatial correlation function for the pumping force.

Source: Journal of Experimental and Theoretical Physics

DOI: 10.1134/s1063776123060122

Authors: I. V. Kolokolov, V. V. Lebedev, M. M. Tumakova

Institutions: National Research University Higher School of Economics, Russian Academy of Sciences, Landau Institute for Theoretical Physics

Language: English

Topic: Fluid Dynamics and Turbulent Flows

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4383683634

FWCI: 0.701

Cites: 24

Cited by: 5

Related to: 10