Influence of Leading-Edge Tubercle with Amplitude Modulation on NACA 0015 Airfoil

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dc.authoridSEYHAN, Mehmet/0000-0002-5927-9128
dc.contributor.authorSeyhan, Mehmet
dc.contributor.authorSarioglu, Mustafa
dc.contributor.authorAkansu, Yahya E.
dc.date.accessioned2024-11-07T13:31:55Z
dc.date.available2024-11-07T13:31:55Z
dc.date.issued2021
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractFlow around a NACA0015 airfoil with leading-edge tubercles was investigated using force measurements and flow visualization at 0 deg <= alpha <= 30 deg. The experiments were carried out at a low Reynolds number of Re = 6.3 x 10(4), where the transition to turbulent flow still occurred on the suction side of the airfoil. The leading-edge patterns of the models were produced by using only either one wave function or one superposition of two wave functions. Two tubercle models with uniform distribution and nine more realistic biomimicked airfoil models with amplitude modulation in tubercle geometry were tested in experiments. Force measurements showed that when compared to the baseline model, models with tubercles did not experience a sudden loss of lift and have higher lift coefficients in the poststall regime, irrespective of the model. It was found that the W15 model performs best in terms of maximum lift coefficient, stall angle, aerodynamic performance (C-L/C-D) in the poststall regime; as well as in terms of the minimum fluctuating lift coefficient C-L' in both pre- and poststall regimes. Enhancement of aerodynamic performance is due to the presence of stall cell formation with the counter-rotating vortex pairs and three-dimensional spanwise flow pattern initiated by leading-edge tubercles at the poststall regime.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [118M592]
dc.description.sponsorshipThe authors would like to acknowledge the financial support of this work by the Scientific and Technological Research Council of Turkey (TUBITAK) under the contract number of 118M592. The authors also thank Aleyna Colak for her assistance.
dc.identifier.doi10.2514/1.J060180
dc.identifier.endpage3978
dc.identifier.issn0001-1452
dc.identifier.issn1533-385X
dc.identifier.issue10
dc.identifier.scopus2-s2.0-85135246251
dc.identifier.scopusqualityQ1
dc.identifier.startpage3965
dc.identifier.urihttps://doi.org/10.2514/1.J060180
dc.identifier.urihttps://hdl.handle.net/11480/15129
dc.identifier.volume59
dc.identifier.wosWOS:000739665800014
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer Inst Aeronautics Astronautics
dc.relation.ispartofAiaa Journal
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectAerodynamic Characteristics
dc.subjectHumpback Whale
dc.subjectNumerical-Analysis
dc.subjectFlow
dc.subjectStall
dc.subjectPerformance
dc.subjectProtuberances
dc.subjectTurbine
dc.subjectDesign
dc.subjectWings
dc.titleInfluence of Leading-Edge Tubercle with Amplitude Modulation on NACA 0015 Airfoil
dc.typeArticle

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