Velocity-vorticity patterns in turbulent flow

Richard B. Pelz, Victor Yakhot, Steven A. Orszag, Leonid Shtilman, Evgeny Levich

Research output: Contribution to journalArticlepeer-review

Abstract

Direct numerical simulation of the Navier-Stokes equations is used for the investigation of local helicity fluctuations in plane Poiseuille (channel) and Taylor-Green vortex flows. It is shown that in regions of high dissipation, the cosine of the angle between velocity and vorticity is evenly distributed; in regions of low dissipation, the velocity and vorticity vectors have a tendency to align. It is also shown that near the central part of the channel, velocity and vorticity vectors have a strong tendency to be aligned, while in the buffer region, all angles are nearly equally probable.

Original languageEnglish
Pages (from-to)2505-2508
Number of pages4
JournalPhysical Review Letters
Volume54
Issue number23
DOIs
StatePublished - 1985

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