Turbulent flows and intermittency in laboratory experiments

Details Turbulent flows and intermittency in laboratory experiments Turbulent flows and intermittency in laboratory experiments

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001p%26ss...49.1177a&link_type=abstract

Planetary and Space Science, Volume 49, Issue 12, p. 1177-1191.

Physics

16

Scientific paper

In turbulent flows, the transfer of energy from large to small scales is strongly intermittent, in contradiction with Kolmogorov's (Dokl. Akad. Nauk. SSSR 30 /(1941) 299; hereafter K41) assumptions. The statistical properties associated with these energy transfer fluctuations at a given scale /r have been widely studied theoretically, experimentally and numerically over the last 30 years or so. Such fluctuations are also encountered in various Planetary and Space Science domains. The present paper presents a review of laboratory experiments which clearly display the fractal nature of the (spatial or temporal) energy distribution at scale /r, the departures from the K41 predictions being generally quantified through high-order moments of velocity increments.

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