Sub-Kolmogorov-Scale Fluctuations in Fluid Turbulence
| dc.creator | Schumacher, Joerg | |
| dc.date | 2007-10-22 | |
| dc.date.accessioned | 2026-07-07T08:38:45Z | |
| dc.date.available | 2026-07-07T08:38:45Z | |
| dc.description | We relate the intermittent fluctuations of velocity gradients in turbulence to a whole range of local dissipation scales generalizing the picture of a single mean dissipation length. The statistical distribution of these local dissipation scales as a function of Reynolds number is determined in numerical simulations of forced homogeneous isotropic turbulence with a spectral resolution never applied before which exceeds the standard one by at least a factor of eight. The core of the scale distribution agrees well with a theoretical prediction. Increasing Reynolds number causes the generation of ever finer local dissipation scales. This is in line with a less steep decay of the large-wavenumber energy spectra in the dissipation range. The energy spectrum for the highest accessible Taylor microscale Reynolds number R_lambda=107 does not show a bottleneck. | |
| dc.description | 8 pages, 5 figures (Figs. 1 and 3 in reduced quality) | |
| dc.identifier | https://arxiv.org/abs/0710.4100 | |
| dc.identifier | http://arxiv.org/abs/0710.4100 | |
| dc.identifier | Europhys. Lett., 80 (2007) 54001 | |
| dc.identifier | doi:10.1209/0295-5075/80/54001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/140843 | |
| dc.subject | Fluid Dynamics | |
| dc.subject | Chaotic Dynamics | |
| dc.title | Sub-Kolmogorov-Scale Fluctuations in Fluid Turbulence | |
| dc.type | text |