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dc.contributor.authorYücel, S. Banu
dc.contributor.authorŞahin, Mehmet
dc.contributor.authorÜnal, M. Fevzi
dc.date.accessioned2015-12-21T16:05:40Z
dc.date.available2015-12-21T16:05:40Z
dc.date.issued2015en_US
dc.identifier.citationYücel, S. B., Şahin, M., & Ünal, M. F. (2015). Strong transient effects of the flow around a harmonically plunging NACA0012 airfoil at low Reynolds numbers. Theoretical and Computational Fluid Dynamics. 29(5), 391-412. http://dx.doi.org/10.1007/s00162-015-0363-8en_US
dc.identifier.issn0935-4964
dc.identifier.issn1432-2250
dc.identifier.urihttp://dx.doi.org/10.1007/s00162-015-0363-8
dc.identifier.urihttps://hdl.handle.net/20.500.11779/19
dc.descriptionÜnal, M. Fevzi (MEF Author) -- 13.Eylül.2016 tarihine kadar yazar sürümüne erişim kısıtı vardır.en_US
dc.description.abstractAbstract The flow pattern around a NACA0012 airfoil undergoing harmonic plunging motion corresponding to the deflected wake phenomenon reported by Jones and Platzer (Exp Fluids 46:799–810, 2009) is investigated in detail using direct numerical simulations. An arbitrary Lagrangian–Eulerian formulation based on an unstructured side-centered finite volume method is utilized in order to solve the incompressible unsteady Navier–Stokes equations. The Reynolds number is chosen to be 252, and the reduced frequency of plunging motion (k = 2?fc/U?) and the plunge amplitude non-dimensionalized with respect to chord are set to be 12.3 and 0.12, respectively, as in the experimental study of Jones and Platzer (2009). The present numerical simulations reveal a highly persistent transient effect, and it takes two orders of magnitude larger duration than the heave period to reach the time-periodic state. In addition, the three-dimensional simulation reveals that the flow field is three-dimensional for the parameters used herein. The calculation reproduces the deflected wake and shows a good agreement with the experimental wake pattern. The instantaneous vorticity contours, finite-time Lyapunov exponent fields and particle traces are presented along with the aerodynamic parameters including the lift and thrust coefficients.en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.relation.ispartofTheoretical and Computational Fluid Dynamicsen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectTransient Effectsen_US
dc.subjectDeflected Wakeen_US
dc.subjectPlunging NACA0012 Airfoilen_US
dc.subjectALE Methodsen_US
dc.titleStrong transient effects of the flow around a harmonically plunging NACA0012 airfoil at low Reynolds numbersen_US
dc.typearticleen_US
dc.departmentMühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.authoridMehmet Fevzi Ünal / TR9335en_US
dc.authoridMehmet Fevzi Ünal / 0000-0002-0781-1514en_US
dc.identifier.volume29en_US
dc.identifier.issue5en_US
dc.identifier.startpage391en_US
dc.identifier.endpage412en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.description.wosidWOS:000364130700003en_US
dc.description.scopusid2-s2.0-84945474258en_US
dc.contributor.institutionauthorÜnal, M. Fevzi
dc.description.woscitationindexScience Citation Index Expandeden_US
dc.identifier.wosqualityQ3en_US
dc.description.WoSDocumentTypeArticleen_US
dc.description.WoSInternationalCollaborationUluslararası işbirliği ile yapılmayan - HAYIRen_US
dc.description.WoSPublishedMonthAralıken_US
dc.description.WoSIndexDate2015en_US
dc.description.WoSYOKperiodYÖK - 2015-16en_US
dc.identifier.doi10.1007/s00162-015-0363-8en_US
dc.identifier.scopusqualityQ1 - Q2en_US


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