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Study of the Log-layer Structure in Wall Turbulence Over a Very Large Range of Reynolds Number

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.180
pages 143-146

Ivan Marusic
Department of Mechanical Engineering, The University of Melbourne, Melbourne, VIC, 3010, Australia

Nick Hutchins
Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis, Minnesota 55455, USA

Abstract

An investigation was conducted of the logarithmic layer structure in turbulent boundary layers spanning three orders of magnitude change in Reynolds number. This was achieved by using two laboratory scale facilities and the atmospheric surface layer at the SLTEST facility in Utah. Several experimental techniques were used in order to probe the three-dimensional nature of the flow structures. Two-point correlation statistics are found to agree well over all Reynolds numbers with outer flow scaling, and large-scale coherence recently noted in the logarithmic region of laboratory-scale boundary layers are also present in the atmospheric surface layer flow.

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