Abonnement à la biblothèque: Guest
Fifth International Symposium on Turbulence and Shear Flow Phenomena
August, 27-29, 2007, Technische Universität München, Munich, Germany

DOI: 10.1615/TSFP5

LOCALLY VARYING DISSIPATION SCALES IN TURBULENT FLOWS

pages 137-142
DOI: 10.1615/TSFP5.200
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RÉSUMÉ

The classical picture of one mean dissipation scale which is known as the Kolmogorov length can be extended to a continuum of local dissipation scales in order to capture for the intermittent nature of small-scale turbulence. The distribution of these local dissipation scales is found to agree with a recently calculated analytical form. We discuss consequences of this generalized perspective for the decay of energy spectra in the far-dissipation range and the turbulent mixing of passive scalars in the viscous-convective range at Schmidt numbers larger than unity.

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