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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
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2019 (English)In: HIGH-ENERGY PROCESSES IN CONDENSED MATTER (HEPCM 2019): Proceedings of the XXVI Conference on High-Energy Processes in Condensed Matter, dedicated to the 150th anniversary of the birth of S.A. Chaplygin, American Institute of Physics (AIP), 2019, article id 030044Conference paper, Published paper (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2019. article id 030044
Series
AIP Conference Proceedings, ISSN 0094-243X ; 2125
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-262562DOI: 10.1063/1.5117426Scopus ID: 2-s2.0-85070555367ISBN: 9780735418653 (print)OAI: oai:DiVA.org:kth-262562DiVA, id: diva2:1365569
Conference
26th All-Russian Conference on High Energy Processes in Condensed Matter: Dedicated to the 150th Anniversary of the Birth of S.A. Chaplygin, HEPCM 2019; Novosibirsk; Russian Federation; 3 April 2019 through 5 April 2019
Note

QC 20191025

Available from: 2019-10-25 Created: 2019-10-25 Last updated: 2019-10-25Bibliographically approved

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Örlü, RamisHanifi, Ardeshir

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