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Large-eddy simulations of adverse pressure gradient 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.
KTH, School of Engineering Sciences (SCI), Mechanics, Stability, Transition and Control. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Mechanics, Stability, Transition and Control. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
2016 (English)In: 2nd Multiflow Summer School on Turbulence, Institute of Physics (IOP), 2016, 012012Conference paper (Refereed)Text
Abstract [en]

Adverse pressure-gradient (APG) turbulent boundary layers (TBL) are studied by performing well-resolved large-eddy simulations. The pressure gradient is imposed by defining the free-stream velocity distribution with the description of a power law. Different inflow conditions, box sizes and upper boundary conditions are tested in order to determine the final set-up. The statistics of turbulent boundary layers with two different power-law coefficients and thus magnitudes of adverse pressure gradients are then compared to zero pressure-gradient (ZPG) data. The effect of the APG on TBLs is manifested in the mean flow through a much more prominent wake region and in the Reynolds stresses through the existence of an outer peak. The pre-multiplied energy budgets show, that more energy is transported from the near-wall region to farther away from the wall.

Place, publisher, year, edition, pages
Institute of Physics (IOP), 2016. 012012
Series
, Journal of Physics Conference Series, ISSN 1742-6588 ; 708
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-188462DOI: 10.1088/1742-6596/708/1/012012ISI: 000376007700013ScopusID: 2-s2.0-84966458784OAI: oai:DiVA.org:kth-188462DiVA: diva2:936007
Conference
2nd Multiflow Summer School on Turbulence, MAY 25-26, 2015, Tech Univ Madrid, Sch Aeronaut, Madrid, SPAIN
Note

QC 20160613

Available from: 2016-06-13 Created: 2016-06-10 Last updated: 2016-06-13Bibliographically approved

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Bobke, AlexandraVinuesa, RicardoÖrlü, RamisSchlatter, Philipp
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ReferencesLink to record
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