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Experimental and theoretical study of swept-wing boundary-layer instabilities. Three-dimensional Tollmien-Schlichting instability

Borodulin, V. I. and Ivanov, A. V. and Kachanov, Y. S. and Mischenko, D. A. and Örlü, R. and Hanifi, A. and Hein, Stefan (2019) Experimental and theoretical study of swept-wing boundary-layer instabilities. Three-dimensional Tollmien-Schlichting instability. Physics of Fluids, 31 (11), p. 114104. American Institute of Physics (AIP). doi: 10.1063/1.5125812. ISSN 1070-6631.

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Official URL: https://aip.scitation.org/doi/10.1063/1.5125812

Abstract

Extensive combined experimental and theoretical investigations of the linear evolution of three-dimensional (3D) Tollmien-Schlichting (TS) instability modes of 3D boundary layers developing on a swept airfoil section have been carried out. The flow under consideration is the boundary layer over an airfoil at 35 degrees sweep and an angle of attack of +1.5 degree. At these conditions, TS instability is found to be the predominant one. Perturbations with different frequencies and spanwise wavenumbers are generated in a controlled way using a row of elastic membranes. All experimental results are deeply processed and compared with results of calculations based on theoretical approaches. Very good quantitative agreement of all measured and calculated stability characteristics of swept-wing boundary layers is achieved.

Item URL in elib:https://elib.dlr.de/128826/
Document Type:Article
Title:Experimental and theoretical study of swept-wing boundary-layer instabilities. Three-dimensional Tollmien-Schlichting instability
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Borodulin, V. I.Institute of Theoretical and Applied Mechanics, Novosibirsk, 630090, RussiaUNSPECIFIED
Ivanov, A. V.Institute of Theoretical and Applied Mechanics, Novosibirsk, 630090, RussiaUNSPECIFIED
Kachanov, Y. S.Institute of Theoretical and Applied Mechanics, Novosibirsk, 630090, RussiaUNSPECIFIED
Mischenko, D. A.Institute of Theoretical and Applied Mechanics, Novosibirsk, 630090, RussiaUNSPECIFIED
Örlü, R.KTH, Stockholm, SchwedenUNSPECIFIED
Hanifi, A.KTH, Stockholm, SchwedenUNSPECIFIED
Hein, StefanStefan.Hein (at) dlr.deUNSPECIFIED
Date:18 November 2019
Journal or Publication Title:Physics of Fluids
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:31
DOI :10.1063/1.5125812
Page Range:p. 114104
Editors:
EditorsEmailEditor's ORCID iD
UNSPECIFIEDAIP PublishingUNSPECIFIED
Publisher:American Institute of Physics (AIP)
ISSN:1070-6631
Status:Published
Keywords:laminar-turbulent transition, swept wing, hot-wire anemometry, local and nonlocal linear instability analysis, LST, PSE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > High Speed Configurations, GO
Deposited By: Hein, Dr.-Ing. Stefan
Deposited On:21 Nov 2019 14:14
Last Modified:20 Jun 2021 15:52

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