Work

Modification of turbulence by the movement of a spherical vortex

Year: 2026

Type: article

Abstract: This paper presents a theoretical and computational investigation into how a propagating three-dimensional vortex modifies ambient turbulence. Using rapid distortion theory and numerical simulations, the study explores both local and non-local changes in the external vorticity field resulting from fluid displacement and stretching. Cases involving structured and unstructured turbulence reveal that the vortex introduces permanent distortions along its path, and alters the far field turbulence through reflux effects. The findings extend classical models by quantifying the impact of vortex-induced strain and displacement on turbulence, offering new insights into turbulent–turbulent interfaces and the role of coherent structures in modulating external turbulent fields.

Source: Journal of Fluid Mechanics

DOI: 10.1017/jfm.2026.11270

Authors: Ian Eames, Jan-Bert Flór

Institutions: University College London, Laboratoire des Écoulements Géophysiques et Industriels

Language: English

Topic: Fluid Dynamics and Turbulent Flows

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,550

Funders: Université Grenoble Alpes, University of Cambridge, University College London, Agence Nationale de la Recherche