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Receptivity coefficients of vortex-vibrational type at excitation of 3D Tollmien-Schlichting waves in a boundary layer on a swept wing

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) Receptivity coefficients of vortex-vibrational type at excitation of 3D Tollmien-Schlichting waves in a boundary layer on a swept wing. AIP Conference Proceedings, 2125 (030044), pp. 1-7. American Institute of Physics (AIP). DOI: 10.1063/1.5117426 ISSN 0094-243X

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Official URL: https://doi.org/10.1063/1.5117426

Abstract

The paper is devoted to the first results of an experimental quantitative study of the receptivity mechanism of a swept-wing laminar boundary layer related to scattering of 2D freestream vortices (with frequency fv) at 3D local surface vibrations (with frequency fs) resulting in an excitation of Tollmien-Schlichting (TS) waves (having combination frequencies f+ = fs + fv and f- = fs - fv). The experiments were carried out in a low-turbulence level wind tunnel on a high-precision experimental model of long-laminar-run swept airfoil (sweep angle of 35°) at a freestream speed of about 10 m/s. Controlled localized 3D surface vibrations and 2D freestream vortices were generated by special disturbance sources. Quantitative characteristics of the studied receptivity mechanism (receptivity coefficients) were estimated.

Item URL in elib:https://elib.dlr.de/127213/
Document Type:Article
Title:Receptivity coefficients of vortex-vibrational type at excitation of 3D Tollmien-Schlichting waves in a boundary layer on a swept wing
Authors:
AuthorsInstitution or Email of AuthorsAuthors 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:26 July 2019
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:2125
DOI :10.1063/1.5117426
Page Range:pp. 1-7
Editors:
EditorsEmail
UNSPECIFIEDAIP
Publisher:American Institute of Physics (AIP)
ISSN:0094-243X
Status:Published
Keywords:laminar-turbulent transition, receptivity, EU project RECEPT
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
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > High Speed Configurations, GO
Deposited By: Hein, Dr.-Ing. Stefan
Deposited On:08 Aug 2019 14:34
Last Modified:08 Aug 2019 14:34

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