Structure functions and energy dissipation dependence on Reynolds number

Details Structure functions and energy dissipation dependence on Reynolds number Structure functions and energy dissipation dependence on Reynolds number

2001-07-04

arxiv.org/abs/nlin/0107008v1

Nonlinear Sciences

Chaotic Dynamics

15 pages, 5 figures

Scientific paper

10.1063/1.1504449

The dependence of the statistics of energy dissipation on the Reynolds number is investigated in an experimental jet flow. In a range of about one decade of $Re_{\lambda}$ (from about 200 to 2000) the adimensional mean energy dissipation is found to be independent on $Re_{\lambda}$, while the higher moments of dissipation show a power-law dependence. The scaling exponents are found to be consistent with a simple prediction based on the multifractal model for inertial range structure functions. This is an experimental confirmation of the connection between inertial range quantities and dissipation statistics predicted by the multifractal approach.

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