Point vortex dynamics within a background vorticity patch

Dezhe Jin, D. H.E. Dubin

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Recent experiments and simulations have observed that the interaction of strong vortices with a low vorticity background can strongly affect the dynamics of both vortices and background. This paper considers an idealized model of this interaction. The background is treated as a patch of uniform vorticity with a nearly circular shape. The strong vortices are treated as point vortices, and their total circulation λ is assumed to be small compared to that of the background. It is found that Kelvin waves on the boundary of the background patch can be driven to large amplitude by the strong vortices, eventually resulting in wave breaking and filamentation. A multiscale analysis finds that the wave-breaking time scales as λ-1 ln λ-1, in agreement with contour dynamics simulations.

Original languageEnglish (US)
Pages (from-to)677-691
Number of pages15
JournalPhysics of Fluids
Volume13
Issue number3
DOIs
StatePublished - Jan 1 2001

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vorticity
vortices
Kelvin waves
simulation
interactions

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Jin, Dezhe ; Dubin, D. H.E. / Point vortex dynamics within a background vorticity patch. In: Physics of Fluids. 2001 ; Vol. 13, No. 3. pp. 677-691.
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Point vortex dynamics within a background vorticity patch. / Jin, Dezhe; Dubin, D. H.E.

In: Physics of Fluids, Vol. 13, No. 3, 01.01.2001, p. 677-691.

Research output: Contribution to journalArticle

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