Anisotropy and asymmetry in fully developed turbulence

TL;DR

This paper investigates the anisotropy and asymmetry in high Reynolds number turbulence, linking small-scale structures and intermittency to large-scale shear effects, revealing non-local influences in turbulent flows.

Contribution

It introduces an analysis connecting large-scale shear with small-scale turbulence anisotropy and asymmetry, highlighting non-local effects and intermittency in high Reynolds number turbulence.

Findings

Anisotropy and asymmetry are related to small-scale turbulent structures.

Large-scale velocity shear influences small-scale turbulence.

Non-local effects contribute to turbulence intermittency.

Abstract

Using experimental longitudinal and transverse velocities data for very high Reynolds number turbulence, we study both anisotropy and asymmetry of turbulence. These both seem to be related to small scale turbulent structures, and to intermittency. We may assume that the large scale velocity shear gives an impact into the small scale turbulence, resulting in non-locality, and related anomalous events.