Work

Influence of the vorticity-scalar correlation on mixing

Year: 2024

Type: article

Abstract: Many factors influence the long-time behavior and mixing of a passive scalar field transported by a two-dimensional (2D) fluid flow. Our investigations based on statistical mechanics and numerical simulations suggest that the correlation of the scalar field with the flow's vorticity field is an important factor: strong correlation with the vorticity field is detrimental to mixing. This is linked to the inverse cascade in 2D turbulence and the persistence of large scale vortical structures.

Source: Physical Review Fluids

DOI: 10.1103/physrevfluids.9.104502

Authors: Xi-Yuan Yin, Wesley Agoua, Tong Wu, Wouter J. T. Bos

Institutions: Lyon 1 Université, École Centrale de Lyon, Laboratoire de Mécanique des Fluides et d'Acoustique, University of Bayreuth

Language: English

Topic: Fluid Dynamics and Turbulent Flows

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Agence Nationale de la Recherche

Award: Adaptive Characteristic Mapping Method for the Euler Equations