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Reynolds number dependency of near-wall statistics of zero-pressure-gradient turbulent boundary layer

Reynolds number dependency of near-wall statistics of zero-pressure-gradient turbulent boundary layer
Reynolds number dependency of near-wall statistics of zero-pressure-gradient turbulent boundary layer
We report high-resolution LDA and HWA measurements of the streamwise velocity component of a flat-plate turbulent boundary layer (ZPG TBL) over a range of momentum thickness Reynolds number from 1,170 to 3,720. The primary objective of this work is to investigate the near-wall behavior and the scaling of high-order statistics. In particular, we are interested in certain Kármán number dependencies. The obtained data are in excellent agreement with most recent DNS-results, which allows direct comparison of detailed results such as peak value and position of streamwise stress, wall-values of skewness and flatness factors, and turbulence dissipation rate. The experimental data clearly reveal the failure of classical scaling. An alternative mixed scaling based on u?3/2ue1/2 removes these discrepancies.
1742-6588
022005-[2pp]
Buschmann, M.H.
3fc210bf-7ab7-4f16-ab44-3f189aa05eef
Keirsbulck, L.
2faf698a-ed36-46b7-aa20-56d557489b6e
Fourrié, G.
b79ce500-fc9f-4f8f-91ee-5cdeeb0f1907
Labraga, L.
b8e666f8-5cb6-4206-8aa1-b609a36621cf
Gad-el-Hak, M.
ad97cca6-3f8d-4a72-a8ce-0eda26da2ac1
Buschmann, M.H.
3fc210bf-7ab7-4f16-ab44-3f189aa05eef
Keirsbulck, L.
2faf698a-ed36-46b7-aa20-56d557489b6e
Fourrié, G.
b79ce500-fc9f-4f8f-91ee-5cdeeb0f1907
Labraga, L.
b8e666f8-5cb6-4206-8aa1-b609a36621cf
Gad-el-Hak, M.
ad97cca6-3f8d-4a72-a8ce-0eda26da2ac1

Buschmann, M.H., Keirsbulck, L., Fourrié, G., Labraga, L. and Gad-el-Hak, M. (2011) Reynolds number dependency of near-wall statistics of zero-pressure-gradient turbulent boundary layer. Journal of Physics: Conference Series, 318 (2), 022005-[2pp]. (doi:10.1088/1742-6596/318/2/022005).

Record type: Article

Abstract

We report high-resolution LDA and HWA measurements of the streamwise velocity component of a flat-plate turbulent boundary layer (ZPG TBL) over a range of momentum thickness Reynolds number from 1,170 to 3,720. The primary objective of this work is to investigate the near-wall behavior and the scaling of high-order statistics. In particular, we are interested in certain Kármán number dependencies. The obtained data are in excellent agreement with most recent DNS-results, which allows direct comparison of detailed results such as peak value and position of streamwise stress, wall-values of skewness and flatness factors, and turbulence dissipation rate. The experimental data clearly reveal the failure of classical scaling. An alternative mixed scaling based on u?3/2ue1/2 removes these discrepancies.

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More information

Published date: 2011
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 355054
URI: https://eprints.soton.ac.uk/id/eprint/355054
ISSN: 1742-6588
PURE UUID: c8a6ffe6-eb9b-4698-a2af-2ebded55c2b4

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Date deposited: 12 Aug 2013 14:17
Last modified: 18 Jul 2017 03:50

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