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Excitation of cross-flow instability modes of a swept-wing boundary layer due to vibrational and vortex-vibration localized receptivity mechanisms

Borodulin, V. I. and Ivanov, A. V. and Kachanov, Y. S. and Mischenko, D. A. and Örlü, R. and Hanifi, Ardeshir and Hein, Stefan (2018) Excitation of cross-flow instability modes of a swept-wing boundary layer due to vibrational and vortex-vibration localized receptivity mechanisms. 12th All-Russian Conference of Young Scientists: Problems of Mechanics: Theory, Experiment and New Technologies, 16.-22. März 2018, Novosibirsk, Russia.

Full text not available from this repository.

Official URL: http://conf.nsc.ru/pmtent12

Abstract

Results of the EU project RECEPT are presented. The experiments in a three-dimensional swept-wing boundary layer were carried out in the low-turbulence wind tunnel MTL at KTH Stockholm. The cross-flow instability modes (CF) were the most amplified ones, while the Tollmien-Schlichting instability modes were suppressed by a favorable pressure gradient. The main measurements were performed by means of a single-wire hot-wire probe at conditions of excitation of fully controlled, unsteady surface and flow perturbations. These perturbations were excited by special sources: (i) a surface membrane and (ii) a vibrating wire. Comparisons with calculations carried out by means of linear (locally-parallel) stability theory (LST) were performed. A thorough analysis of the disturbance development showed that the features of the downstream evolution of the CF-modes observed at the combinational frequency can be explained by the action of a distributed receptivity mechanism.

Item URL in elib:https://elib.dlr.de/118622/
Document Type:Conference or Workshop Item (Speech)
Title:Excitation of cross-flow instability modes of a swept-wing boundary layer due to vibrational and vortex-vibration localized receptivity mechanisms
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, ArdeshirKTH StockholmUNSPECIFIED
Hein, StefanUNSPECIFIEDUNSPECIFIED
Date:2018
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:laminar-turbulent transition, three-dimensional boundary layer, EU project RECEPT
Event Title:12th All-Russian Conference of Young Scientists: Problems of Mechanics: Theory, Experiment and New Technologies
Event Location:Novosibirsk, Russia
Event Type:international Conference
Event Dates:16.-22. März 2018
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:28 Sep 2018 17:06
Last Modified:02 Oct 2018 13:59

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