Low-resolution numerical simulation of decaying two-dimensional turbulence.

A. F. Bennett, D. B. Haidvogel

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Numerical simulation of two-dimensional turbulence show that O(k-1) and O(k-4) energy spectra - described by Fox and Orszag (1973) as enstrophy-equipartitioning and strongly dissipating turbulence, respectively - occur independently of the type of dissipation mechanism, and the inclusion of forcing and the beta-effect. In both states the modal decorrelation rate eta depends strongly upon wavenumber in accordance with the equations of a direct interaction approximation (Kraichnan, 1958), but in conflict with the hypothetical wavenumber independence of eta in an enstrophy-cascading inertial similarity range. Implications for geophysical fluid dynamical modeling are discussed.-Authors

Original languageEnglish (US)
Pages (from-to)738-748
Number of pages11
JournalJournal of the Atmospheric Sciences
Volume40
Issue number3
DOIs
StatePublished - Jan 1 1983
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

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