Stratified shear turbulence: Evolution and statistics

Details Stratified shear turbulence: Evolution and statistics Stratified shear turbulence: Evolution and statistics

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26..439w&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 4, p. 439-442

Physics

Geophysics

63

Mathematical Geophysics: Numerical Solutions, Meteorology And Atmospheric Dynamics: Turbulence, Oceanography: Physical: Turbulence, Diffusion, And Mixing Processes

Scientific paper

The highest-resolution 3D direct numerical simulations to date of Kelvin-Helmholtz instability are reported. The ensuing turbulence spans a broad range of spatial scales and exhibits Kolmogorov spectra in horizontal planes. Non-Gaussian statistics are observed, with highly intermittent entrainment zones at the edges of the resulting shear layer. Profiles of the local gradient-Richardson number are presented and shown to remain less than 1/4 throughout the entire evolution of the turbulence.

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