Viscous evolution of 2D dipolar vortices

J.H.G.M. van Geffen, G.J.F. Heijst, van

Research output: Contribution to journalArticleAcademicpeer-review

25 Citations (Scopus)

Abstract

Numerical simulations with a finite-difference method have revealed that a Lamb dipole when placed in a viscous fluid moves along a straight line with decreasing velocity and increasing radius. The relationship between vorticity and streamfunction, which initially is linear, becomes more and more sinh-like as the dipole decays. Some other initial dipolar vorticity distributions (like two oppositely signed monopolar vortices) were found to evolve to a dipolar structure with Lamb-like characteristics.
Original languageEnglish
Pages (from-to)191-213
Number of pages23
JournalFluid Dynamics Research
Volume22
Issue number4
DOIs
Publication statusPublished - 1998

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