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Identifying well-behaved turbulent boundary layers
KTH, School of Engineering Sciences (SCI), Mechanics, Stability, Transition and Control. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
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2017 (English)In: Progress in Turbulence VII, Springer Science+Business Media B.V., 2017, Vol. 196, p. 67-72Conference paper (Refereed)
Abstract [en]

This paper presents a study focused on the development of zero-pressure-gradient turbulent boundary layers (ZPG TBL) towards well-behaved conditions in the low Reynolds-number range. A new method to assess the length required for the ZPG TBL to exhibit well-behaved conditions is proposed. The proposed method is based on the diagnostic-plot concept (Alfredsson et al., Phys. Fluids, 23:041702, 2011), which only requires mean and turbulence intensity measurements in the outer region of the boundary layer. In contrast to the existing methods which rely on empirical skin-friction curves, shape-factor or wake-parameter, the quantities required by this method are generally much easier to measure. To test the method, the evolution of six different tripping configurations, including weak, late and strong overtripping, are studied in a wind-tunnel experiment to assess the convergence of ZPG TBLs towards well-behaved conditions in the momentum-thickness based Reynolds-number range 500 < Reθ < 4000.

Place, publisher, year, edition, pages
Springer Science+Business Media B.V., 2017. Vol. 196, p. 67-72
Series
Springer Proceedings in Physics, ISSN 0930-8989 ; 196
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Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-212032DOI: 10.1007/978-3-319-57934-4_10Scopus ID: 2-s2.0-85022328798ISBN: 9783319579337 OAI: oai:DiVA.org:kth-212032DiVA, id: diva2:1133564
Conference
7th iTi Conference on Turbulence, 2016, Bertinoro, Italy, 7 September 2016 through 9 September 2016
Note

QC 20170816

Available from: 2017-08-16 Created: 2017-08-16 Last updated: 2017-08-16Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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