The Extraction of Anisotropic Contributions in Turbulent Flows
arXiv:chao-dyn/9804040 · doi:10.1103/PhysRevLett.81.5330
Abstract
We analyze turbulent velocity signals measured by two probes in the atmosphere, both at the height of 35 meters but displaced by 40 cm nominally orthogonal to the mean wind. Choosing a suitable coordinate system with respect to that of the mean wind, we derive theoretical forms for second order structure functions, and fit them to experimental data. We show that the effect of flow anisotropy is small on the longitudinal component but significant on the transverse component. The data provide an estimate of a universal exponent from among a hierarchy that governs the decay of flow anisotropy with the scale-size.
arXiv commentPRL, submitted, REVTeX, 4 pages, 2 figures (included). Online (HTML) and PS versions of this and related papers available at http://lvov.weizmann.ac.il/
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