Comparison of flow structures in the downstream region of a cylinder and sphere

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dc.contributor.authorÖzgören, Muammer
dc.contributor.authorPınar, Engin
dc.contributor.authorŞahin, Beşir
dc.contributor.authorAkıllı, Hüseyin
dc.date.accessioned2020-03-26T18:13:59Z
dc.date.available2020-03-26T18:13:59Z
dc.date.issued2011
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractAn experimental investigation of flow structures downstream of a circular cylinder and sphere immersed in a free-stream flow is performed for Re = 5000 and 10,000 using qualitative and quantitative flow visualization techniques. The obtained results are presented in terms of time-averaged velocity vectors, patterns of streamlines, vorticity, Reynolds stress correlations and turbulent kinetic energy distributions. Flow data reveal that the size of wake flow region, the location of singular and double points, the peak values of turbulence quantities, such as Reynolds stress correlations, vorticity fluctuations and turbulent kinetic energy vary as a function of models' geometry and Reynolds Numbers. The concentration of small scale vortices is more dominant in the wake of the sphere than that of the cylinder. The maximum value of turbulent kinetic energy (TKE) occurs close to the saddle point for the cylinder case while two maximum values of TKE occur along shear layers for the sphere one because of the 3-D flow behavior. (C) 2011 Elsevier Inc. All rights reserved.en_US
dc.description.sponsorshipScientific and Technological Research Council of TurkeyTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [109R028]; Office of Scientific Research Projects of Cukurova UniversityCukurova University [AAP20025]; Selcuk University's Scientific Research Project OfficeSelcuk Universityen_US
dc.description.sponsorshipThe authors would like to acknowledge the funding of the Scientific and Technological Research Council of Turkey under Contract No: 109R028. The authors acknowledge the financial support of Office of Scientific Research Projects of Cukurova University for funding under Contract No. AAP20025 and Selcuk University's Scientific Research Project Office.en_US
dc.identifier.doi10.1016/j.ijheatfluidflow.2011.08.003en_US
dc.identifier.endpage1146en_US
dc.identifier.issn0142-727Xen_US
dc.identifier.issn1879-2278en_US
dc.identifier.issue6en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1138en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.ijheatfluidflow.2011.08.003
dc.identifier.urihttps://hdl.handle.net/20.500.12395/26254
dc.identifier.volume32en_US
dc.identifier.wosWOS:000298218800006en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE INCen_US
dc.relation.ispartofINTERNATIONAL JOURNAL OF HEAT AND FLUID FLOWen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectCylinderen_US
dc.subjectPIVen_US
dc.subjectSphereen_US
dc.subjectVorticityen_US
dc.subjectVortex sheddingen_US
dc.subjectWake flowen_US
dc.titleComparison of flow structures in the downstream region of a cylinder and sphereen_US
dc.typeArticleen_US

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