Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1862098 | Physics Letters A | 2009 | 4 Pages |
Abstract
The main point of this communication is that there exists a substantial number of strong events, contributing significantly to the PDF of velocity increments in the nominally-defined inertial range, for which viscosity/dissipation is of utmost importance at high Reynolds numbers. This contribution is largest to the tails of the PDF of velocity increments leading to anomalous scaling, especially of higher-order structure functions. Thus the anomalous scaling is not an attribute of the conventionally-defined inertial range, and the latter is not a well-defined concept. The claim above is supported by an analysis of high-Reynolds-number flows in which among other things it was possible to evaluate the instantaneous rate of energy dissipation.
Related Topics
Physical Sciences and Engineering
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Authors
M. Kholmyansky, A. Tsinober,