Barotropic elliptical dipoles in a rotating fluid

Ruben Trieling, Rudi Santbergen, Gertjan Van Heijst, Ziv Kizner

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Barotropic f-plane dipolar vortices were generated in a rotating fluid and a comparison was made with the so-called supersmooth f-plane solution which-in contrast to the classical Lamb-Chaplygin solution-is marked by an elliptical separatrix and a doubly continuously differentiable vorticity field. Dye-visualization and high-resolution particle-tracking techniques revealed that the observed dipole characteristics (separatrix aspect ratio, cross-sectional vorticity distribution and vorticity versus streamfunction relationship) are in close agreement with those of the supersmooth f-plane solution for the entire lifespan of the dipolar vortex.

Original languageEnglish
Pages (from-to)111-115
Number of pages5
JournalTheoretical and Computational Fluid Dynamics
Volume24
Issue number1-4
DOIs
StatePublished - Mar 2010

Bibliographical note

Funding Information:
We thank the organizers of the IUTAM Symposium, in particular Hassan Aref and Dorte Glass for their effort and hospitality. Z.K. acknowledges the support from the Israel Science Foundation grant 628/06, and the financial support from the Netherlands Organization for Scientific Research (NWO) for his working visit at TUE. We are grateful to Enric Pallàs-Sanz for his contribution to the laboratory experiments.

Keywords

  • F-Plane
  • Laboratory experiments
  • Rotating fluid
  • Separatrix
  • Supersmooth dipole

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