AN EXPERIMENTAL STUDY OF PERPENDICULAR ACOUSTIC DISTURBANCES EFFECT ON FLOW OVER AN AEROFOIL AT LOW REYNOLDS NUMBERS

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dc.authoridGENC, Mustafa Serdar/0000-0002-6540-620X
dc.authoridKarasu, Ilyas/0000-0003-3138-6236
dc.contributor.authorGenc, M. Serdar
dc.contributor.authorAkpolat, M. Tugrul
dc.contributor.authorAcikel, H. Hakan
dc.contributor.authorKarasu, Ilyas
dc.date.accessioned2024-09-18T21:01:49Z
dc.date.available2024-09-18T21:01:49Z
dc.date.issued2013
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.descriptionASME International Mechanical Engineering Congress and Exposition -- NOV 09-15, 2012 -- Houston, TXen_US
dc.description.abstractIn this study, the effect of perpendicular acoustic excitation on laminar separation bubble over a NACA2415 aerofoil and stall characteristics of the aerofoil was investigated experimentally at low Reynolds numbers (50000 and 75000) and various angles of attack on the aerofoil using force measurement, pressure measurement and smoke-wire flow visualization techniques. The experiments of resonance characteristics of test section of the wind tunnel showed that the frequencies used for acoustic control were not equal to the peak (resonance) frequencies of the wind tunnel test section. The experimental results of acoustic control showed that when acoustic excitation of a certain frequency was applied, the length of the laminar separation bubble was shortened owing to the energy added to the flow by acoustic excitation. Because of the shortened laminar separation bubble, coefficient of lift was increased. Furthermore, at the stall angles the separated flow was forced to reattach to the surface of the aerofoil, so the stall angle was increased from 12 degrees to 17 degrees and maximum coefficient of lift was increased from 1.16 to 1.24 at Re=50000 and from 13 degrees to 18 degrees and maximum coefficient of lift was increased from 1.18 to 1.34 at Re=75000.en_US
dc.description.sponsorshipASMEen_US
dc.identifier.endpage1258en_US
dc.identifier.isbn978-0-7918-4523-3
dc.identifier.startpage1249en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12483/13029
dc.identifier.wosWOS:000350071100144en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherAmer Soc Mechanical Engineersen_US
dc.relation.ispartofProceedings of The Asme International Mechanical Engineering Congress and Exposition - 2012, Vol 7, Pts A-Den_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectLaminar Separation Bubbleen_US
dc.subjectExcitationen_US
dc.titleAN EXPERIMENTAL STUDY OF PERPENDICULAR ACOUSTIC DISTURBANCES EFFECT ON FLOW OVER AN AEROFOIL AT LOW REYNOLDS NUMBERSen_US
dc.typeConference Objecten_US

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