@inproceedings{f91b4035ede2404eb683b7859cc809ce,
title = "On the existence of self-similar structures in turbulent pipe flow",
abstract = "Townsend's attached eddy hypothesis forms the basis for one of the most far-reaching concepts in the analysis of the logarithmic layer in wall-bounded turbulent flows. The hypothesis proposes that the eddying motions in the inertially dominated region are energetic and geometrically self-similar eddies that scale with the distance from their eddy center to the wall, implying that these three-dimensional eddies can be completely scaled using a single length scale. The attached eddy hypothesis has been used successfully to predict turbulence statistics and the spectral behavior in wall-bounded flows. Here, we experimentally investigate the existence of selfsimilar flow structures in fully-developed turbulent pipe flow at Reτ ≈ 2390. The data is simultaneously acquired at two pipe crosssections using two stereo PIV systems, where the streamwise separation ranges from 0 to 9.97R. The structures are unconditionally sorted by their spanwise length scale through an azimuthal Fourier decomposition. The sorted structures are thereafter investigated using two-point correlations, and the resulting correlation maps are shown to exhibit self-similar behaviour with respect to its spanwise length scale. This single length scale provides a complete description of the shape of the self-similar eddies.",
author = "Hellstr{\"o}m, {Leo H.O.} and {Van Buren}, Tyler and Vaccaro, {John C.} and Smits, {Alexander J.}",
note = "Funding Information: This work was supported under ONR grant no. N00014-15-1-2402 (Program Manager Ron Joslin, Program Director Tom Fu). Copyright: Copyright 2017 Elsevier B.V., All rights reserved.; 10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017 ; Conference date: 06-07-2017 Through 09-07-2017",
year = "2017",
language = "English (US)",
series = "10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017",
publisher = "International Symposium on Turbulence and Shear Flow Phenomena, TSFP10",
booktitle = "10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017",
}