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dc.contributor.authorGenç, M. Serdar-
dc.contributor.authorKaynak, Ünver-
dc.identifier.citation19th AIAA Computational Fluid Dynamics Conference, 22 June 2009 through 25 June 2009, San Antonio, TX, 81959en_US
dc.description.abstractControl of flow over a NACA2415 aerofoil which experiences a laminar separation bubble for a transitional Reynolds number of 2×105 is numerically simulated under the effects of blowing and suction. An earlier experimental study using hot-wire anemometry for a clean (no jet) NACA 2415 aerofoil at ? = 8° shows a laminar separation bubble over the one-third of the airfoil upper surface. In the no jet case, the recently developed k-kL-? and k-? SST transition models accurately predict the location and extent of the separation bubble. Later, single or multiple jets with a width of 2.5% the chord length are placed on the aerofoil upper surface for simulating the isolated or simultaneous blowing and suction jets. For single jets with blowing or suction, whereas the k-? SST model suppress the separation bubble in both cases, the k-kL-? transition model doesn't completely eliminate the separation bubble but moves it downstream in the suction case. Overall, the blowing/suction control mechanism appears to be suppression of the separation bubble and reduction of the upper surface pressure to increase the lift and decrease the drag. For simultaneous blowing and suction, firstly, a blowing jet at 10%c and a suction jet at 36%c are placed at the beginning and end of the separation bubble based on the best results of the single jets. Then, the locations of the blowing and suction jets are reversed. In both cases, both transition models eliminate the separation bubble resulting in increase in the lift and decrease in the drag. However, the best results in terms of the L/D ratios are still obtained with the single suction jets. Copyright © 2009 by the American Institute of Aeronautics and Astronautics, Inc.en_US
dc.relation.ispartof19th AIAA Computational Fluid Dynamics Conferenceen_US
dc.titleControl of flow separation and transition point over an aerofoil at low Re number using simultaneous blowing and suctionen_US
dc.typeConference Objecten_US
dc.departmentFaculties, Faculty of Engineering, Department of Mechanical Engineeringen_US
dc.departmentFakülteler, Mühendislik Fakültesi, Makine Mühendisliği Bölümütr_TR
dc.institutionauthorKaynak, Ünver-
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.relation.conference19th AIAA Computational Fluid Dynamics Conferenceen_US
item.fulltextNo Fulltext-
item.openairetypeConference Object- Department of Mechanical Engineering-
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
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