Energy dissipation statistics in a shell model of turbulence

Abstract

The Reynolds number dependence of the statistics of energy dissipation is investigated in a shell model of fully developed turbulence. The results are in agreement with a model which accounts for fluctuations of the dissipative scale with the intensity of energy dissipation. It is shown that the assumption of a fixed dissipative scale leads to a different scaling with Reynolds which is not compatible with numerical results.Comment: 3 pages RevTeX, 4 PostScript figures, tarred, gzippe