Cross-linking of two antiparallel vortex tubes

M. V. Melander, Fazle Hussain

Research output: Contribution to journalArticlepeer-review

102 Scopus citations


The detailed mechanisms in vortex cross-linking are unveiled by adequately resolved, direct numerical simulation of two viscous vortex tubes. There are three characteristic phases: (i) inviscid induction followed by core flattening and stretching; (ii) bridging of the two vortices by accumulation of annihilated and then cross-linked vortex lines; and (iii) threading of the remnants of the initial vortex pair in between the two bridges as they pull apart. These phases and the role of threading - along with bridging - in the mixing and the enstrophy cascade are explained, and it is shown that the mechanism is insensitive to asymmetries.

Original languageEnglish (US)
Pages (from-to)633-636
Number of pages4
JournalPhysics of Fluids A
Issue number4
StatePublished - Jan 1 1989

ASJC Scopus subject areas

  • Engineering(all)


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