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On the scaling of turbulent asymptotic suction boundary layers
KTH, School of Engineering Sciences (SCI), Mechanics, Fluid Physics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Mechanics, Fluid Physics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0002-3251-8328
2017 (English)In: 10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017, 2017, Vol. 2Conference paper, Published paper (Refereed)
Abstract [en]

An analysis of turbulent suction boundary layers is carried out on the basis of new experimental data. The streamwise extent of the suction region of the present experimental apparatus is significantly longer than previous studies, allowing us to better investigate the development of boundary layers with wall suction. We show that it is possible to experimentally realize a turbulent asymptotic state where the boundary layer becomes independent of the streamwise direction and of the initial condition, so that the suction rate constitutes the only control parameter. Turbulent asymptotic suction boundary layers appear to be characterized by a mean velocity with a long logarithmic region, with a slope independent of the suction rate if outer scaling is adopted. In addition to the mean-velocity scaling of turbulent asymptotic suction boundary layers, the suction rate threshold for self-sustained turbulence is also investigated. 

Place, publisher, year, edition, pages
2017. Vol. 2
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-217141Scopus ID: 2-s2.0-85033234795OAI: oai:DiVA.org:kth-217141DiVA, id: diva2:1154080
Conference
10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017, Swissotel, Chicago, United States, 6 July 2017 through 9 July 2017
Note

QC 20171106

Available from: 2017-11-01 Created: 2017-11-01 Last updated: 2017-11-22Bibliographically approved

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