Intermittent vortex structures in homogeneous isotropic turbulence

Details Intermittent vortex structures in homogeneous isotropic turbulence Intermittent vortex structures in homogeneous isotropic turbulence

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.344..226s&link_type=abstract

Nature (ISSN 0028-0836), vol. 344, March 15, 1990, p. 226-228. Research supported by NSF, USAF, U.S. Navy, and DARPA.

Statistics

Computation

217

Homogeneous Turbulence, Intermittency, Isotropic Turbulence, Turbulence Models, Vortices, Chaos, Computational Fluid Dynamics, Energy Spectra, Reynolds Number, Velocity Distribution

Scientific paper

Numerical simulations are reported which show that there are remarkably simple spatial structures associated with intermittent regions of vorticity. In particular, high-amplitude vortex structures are found which are tubelike and generate local velocity fields that spiral around them. This contrasts with the classical description of turbulence as an array of 'pancake'- or 'lasagne'-like eddies.

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