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Spatial resolution correction for wall-bounded turbulence measurements

Published online by Cambridge University Press:  06 April 2011

A. J. SMITS*
Affiliation:
Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
J. MONTY
Affiliation:
Department of Mechanical Engineering, University of Melbourne, Victoria 3010, Australia
M. HULTMARK
Affiliation:
Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
S. C. C. BAILEY
Affiliation:
Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506, USA
N. HUTCHINS
Affiliation:
Department of Mechanical Engineering, University of Melbourne, Victoria 3010, Australia
I. MARUSIC
Affiliation:
Department of Mechanical Engineering, University of Melbourne, Victoria 3010, Australia
*
†Email address for correspondence: asmits@princeton.edu
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Abstract

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A correction for streamwise Reynolds stress data acquired with insufficient spatial resolution is proposed for wall-bounded flows. The method is based on the attached eddy hypothesis to account for spatial filtering effects at all wall-normal positions. This analysis reveals that outside the near-wall region the spatial filtering effect scales inversely with the distance from the wall, in contrast to the commonly assumed scaling with the viscous length scale. The new formulation is shown to work very well for data taken over a wide range of Reynolds numbers and wire lengths.

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Papers
Copyright
Copyright © Cambridge University Press 2011