Issue |
Europhys. Lett.
Volume 61, Number 6, March 2003
|
|
---|---|---|
Page(s) | 756 - 761 | |
Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
DOI | https://doi.org/10.1209/epl/i2003-00298-x | |
Published online | 01 March 2003 |
On the effects of surrogacy of energy dissipation in determining the intermittency exponent in fully developed turbulence
1
Institute for Physical Science and Technology, University of Maryland College Park, MD 20742, USA
2
Max-Planck-Institut für Physik komplexer Systeme Nöthnitzer Str. 38, D-01187 Dresden, Germany
3
Institut für Theoretische Physik, Technische Universität Dresden D-01062 Dresden, Germany
4
Corporate Technology, Information & Communications, Siemens AG D-81730 München, Germany
Received:
24
October
2002
Accepted:
9
January
2003
The two-point correlation function of the energy dissipation,
obtained from a one-point time record of an atmospheric boundary
layer, reveals a rigorous power law scaling with intermittency
exponent over almost the entire inertial range
of scales. However, for the related integral moment, the power
law scaling is restricted to the upper part of the inertial range
only. This observation is explained in terms of the operational
surrogacy of the construction of energy dissipation, which
influences the behaviour of the correlation function for small
separation distances.
PACS: 47.27.Jv – High-Reynolds-number turbulence / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 02.50.Sk – Multivariate analysis
© EDP Sciences, 2003
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