VORTEX STRIPPING AND THE GENERATION OF HIGH VORTICITY GRADIENTS IN 2-DIMENSIONAL FLOWS

Authors
LEGRAS B DRITSCHEL D
Citation
B. Legras et D. Dritschel, VORTEX STRIPPING AND THE GENERATION OF HIGH VORTICITY GRADIENTS IN 2-DIMENSIONAL FLOWS, Applied scientific research, 51(1-2), 1993, pp. 445-455
Citations number
13
Categorie Soggetti
Mechanics
Journal title
Applied scientific research → ACNP
ISSN journal
00036994
Volume
51
Issue
1-2
Year of publication
1993
Pages
445 - 455
Database
ISI
SICI code
0003-6994(1993)51:1-2<445:VSATGO>2.0.ZU;2-M
Abstract
We study the stripping of vortices with monotonic vorticity profiles w ithin adverse shear. It is shown that distributed vortices behave diff erently from uniform patches regarding the critical onset of tearing. Stripping erodes the exterior layers of a distributed profile and gene rates very high vorticity gradients at the edge of the vortex. These e ffects are measured, and a theory which allows a detailed quantificati on of the mechanism is presented.