THE DYNAMICS OF VORTICITY TUBES IN HOMOGENEOUS TURBULENCE

Authors
VINCENT A MENEGUZZI M
Citation
A. Vincent et M. Meneguzzi, THE DYNAMICS OF VORTICITY TUBES IN HOMOGENEOUS TURBULENCE, Journal of Fluid Mechanics, 258, 1994, pp. 245-254
Citations number
16
Categorie Soggetti
Mechanics,"Phsycs, Fluid & Plasmas
Journal title
Journal of Fluid Mechanics → ACNP
ISSN journal
00221120
Volume
258
Year of publication
1994
Pages
245 - 254
Database
ISI
SICI code
0022-1120(1994)258:<245:TDOVTI>2.0.ZU;2-7
Abstract
Analysis of data from a direct simulation of statistically steady homo geneous turbulence suggests that the vorticity tubes, which constitute the main structure of the vorticity field, are produced by shear inst abilities. This is confirmed by a decay calculation, in which vorticit y sheets appear at first, and then roll up to form the first tubes. Th ese instabilities seem to be at least as important as vortex stretchin g in transferring energy from large to small scales.