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Experimental tests of mean velocity distribution laws derived by lie group symmetry methods in turbulent boundary layers
KTH, Superseded Departments, Mechanics.ORCID iD: 0000-0002-2711-4687
KTH, Superseded Departments, Mechanics.
KTH, Superseded Departments, Mechanics.
2004 (English)In: IUTAM SYMPOSIUM ON REYNOLDS NUMBER SCALING IN TURBULENT FLOW / [ed] Smits, AJ, 2004, Vol. 74, 257-264 p.Conference paper, Published paper (Refereed)
Abstract [en]

New scaling laws for turbulent boundary layers recently derived (see Oberlack, 2001) using Lie group symmetry methods have been tested against experimental data from the KTH data-base for zero-pressure-gradient turbulent boundary layers. The most significant new law gives an exponential variation of the mean velocity defect in the outer (wake) region. It was shown to fit very well the experimental data over a large part of the boundary layer, from the outer part of the overlap region to about half the boundary layer thickness (delta(99)). A small modification of the innermost part of the log-layer is predicted by the same method, in the form of an additive constant within the log-function, and was confirmed by the experimental data.

Place, publisher, year, edition, pages
2004. Vol. 74, 257-264 p.
Series
Fluid Mechanics And Its Applications, 74
Keyword [en]
scaling laws, lie group methods, ZPG turbulent boundary layers, experiments
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-44383ISI: 000189414000045ISBN: 1-4020-1775-8 (print)OAI: oai:DiVA.org:kth-44383DiVA: diva2:450579
Conference
IUTAM Symposium on Reynolds Number Scaling in Turbulent Flow Location: Princeton, NJ Date: SEP 11-13, 2002
Note
QC 20111021Available from: 2011-10-21 Created: 2011-10-20 Last updated: 2011-10-21Bibliographically approved

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Johansson, Arne V.

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