Merging of shielded Gaussian vortices and formation of a tripole at low Reynolds numbers

Gábor Tóth, G. Házi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The interaction between two corotating shielded Gaussian vortices is studied by two-dimensional numerical simulations at low Reynolds numbers. It is shown that the outcome of the interactions can be a shielded monopole, a tripole, or dipolar breaking depending on the initial separation distance and Reynolds number. A flow regime map is given in the parameter space of initial separation distance and Reynolds number. Using formal decomposition for vorticity, we show that the tripole formation is due the same physical mechanism than merging of unshielded vortices, while in dipolar breaking both the symmetric and antisymmetric vorticity contributions play important role.

Original languageEnglish
Article number014005PHF
Pages (from-to)1-7
Number of pages7
JournalPhysics of Fluids
Volume22
Issue number5
DOIs
Publication statusPublished - May 2010

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low Reynolds number
vorticity
Reynolds number
vortices
monopoles
interactions
decomposition
simulation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Merging of shielded Gaussian vortices and formation of a tripole at low Reynolds numbers. / Tóth, Gábor; Házi, G.

In: Physics of Fluids, Vol. 22, No. 5, 014005PHF, 05.2010, p. 1-7.

Research output: Contribution to journalArticle

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