Applied Scientific Research

, Volume 51, Issue 1–2, pp 445–455

Vortex stripping and the generation of high vorticity gradients in two-dimensional flows

  • B. Legras
  • D. Dritschel
Chapter VI: Coherent Structures

DOI: 10.1007/BF01082574

Cite this article as:
Legras, B. & Dritschel, D. Appl. Sci. Res. (1993) 51: 445. doi:10.1007/BF01082574

Abstract

We study the stripping of vortices with monotonic vorticity profiles within adverse shear. It is shown that distributed vortices behave differently from uniform patches regarding the critical onset of tearing. Stripping erodes the exterior layers of a distributed profile and generates very high vorticity gradients at the edge of the vortex. These effects are measured, and a theory which allows a detailed quantification of the mechanism is presented.

Key words

vortex dynamics coherent structures two-dimensional turbulence 

Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • B. Legras
    • 1
  • D. Dritschel
    • 2
  1. 1.Laboratoire de Météorologie Dynamique du CNRSÉcole Normale SupérieureParis Cedex 05
  2. 2.Department of Applied Mathematics and Theoretical PhysicsUniversity of CambridgeCambridge

Personalised recommendations