Relaxation of 2D turbulence to a metaequilibrium near the minimum enstrophy state

Journal Article · Mon Apr 04 04:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.2187· OSTI ID:5007149

Huang, X; Driscoll, C F ^[1]

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1. Department of Physics and Institute for Pure and Applied Physical Sciences, University of California at San Diego, La Jolla, California 92093 (United States)

Relaxation of 2D turbulence has been measured in magnetized electron columns, which follow the same ([ital r],[theta]) dynamics as 2D incompressible fluids. The turbulence arises from shear instabilities on initially hollow columns, then relaxes to long-lasting, axisymmetric metaequilibria. The measured metaequilibrium vorticity profiles are in close agreement with the minimum enstrophy vortices predicted by the selective decay'' hypothesis.

• DOE Contract Number: FG03-85ER53199
• OSTI ID: 5007149
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:14; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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ELECTRON GAS
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LAMINAR FLOW
MAGNETIZATION
RELAXATION
TURBULENCE
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