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

B. Legras; D. Dritschel

doi:10.1007/BF01082574

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

B. Legras^*, D. Dritschel

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	445-455
Number of pages	11
Journal	Applied Scientific Research
Volume	51
Issue number	1-2
DOIs	https://doi.org/10.1007/BF01082574
Publication status	Published - 1 Jan 1993

Keywords

coherent structures
two-dimensional turbulence
vortex dynamics

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10.1007/BF01082574

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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.",

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AU - Dritschel, D.

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N2 - 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.

AB - 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.

KW - coherent structures

KW - two-dimensional turbulence

KW - vortex dynamics

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M3 - Article

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SP - 445

EP - 455

JO - Applied Scientific Research

JF - Applied Scientific Research

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

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Keywords

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