On the role of helicity in complex fluid flows

Leonid Shtilman, Evgeny Levich, Steven A. Orszag, Richard B. Pelz, Arkady Tsinober

Research output: Contribution to journalArticlepeer-review

Abstract

Results of direct numerical simulations of the Taylor-Green vortex are analysed by conditional sampling. In regions of small energy dissipation, there are tendencies for (1) velocity, u, and vorticity, ω, to be aligned and (2) vorticity and curl of vorticity, {down triangle, open} × ω, to be nearly orthogonal. The fields of dissipation, enstrophy, turbulence production, and vortex stretching exhibit a striking similarity in their spatial structure.

Original languageEnglish
Pages (from-to)32-37
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume113
Issue number1
DOIs
StatePublished - 25 Nov 1985
Externally publishedYes

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