Athermodynamic Alignment in the Two-Dimensional Enstrophy Cascade
| dc.creator | Wang, Xin | |
| dc.creator | Chen, Shiyi | |
| dc.creator | Ecke, Robert E. | |
| dc.creator | Eyink, Gregory L. | |
| dc.date | 2002-01-22 | |
| dc.date.accessioned | 2026-07-07T05:33:52Z | |
| dc.date.available | 2026-07-07T05:33:52Z | |
| dc.description | We study inertial-range statistics in the direct enstrophy cascade of two-dimensional turbulence via a numerical simulation of the forced Navier-Stokes equation. In particular, we obtain the distribution of the enstrophy flux and of the angle of alignment of the large-scale vorticity gradient with the small-scale vorticity transport vector. These distributions are surprisingly symmetrical and ``athermodynamic'', not explainable by a local eddy-viscosity approximation with coefficient of either positive or negative sign. By a systematic evaluation of the role of various triadic interactions, we can trace the origin of the strong symmetry to the dominance of infrared non-local triads in the enstrophy cascade. | |
| dc.description | 4 pages, 6 figures | |
| dc.identifier | https://arxiv.org/abs/nlin/0201043 | |
| dc.identifier | http://arxiv.org/abs/nlin/0201043 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/80154 | |
| dc.subject | Chaotic Dynamics | |
| dc.title | Athermodynamic Alignment in the Two-Dimensional Enstrophy Cascade | |
| dc.type | text |