Large Eddy Simulation of Free-Surface Effects on the Wake Structures Downstream of a Spherical Body

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dc.contributor.authorHassanzadeh, Rahim
dc.contributor.authorŞahin, Beşir
dc.contributor.authorÖzgören, Muammer
dc.date.accessioned2020-03-26T18:30:48Z
dc.date.available2020-03-26T18:30:48Z
dc.date.issued2012
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe wake structure downstream of a solid body, which moves near the free-surface, is under the influence of the free-surface motion. The rate of this influence depends on the submerging elevation or distance between the solid body and the free-surface. This investigation presents the interaction between the free-surface and the wake structure downstream of a spherical body at four different submerging elevations such as h/d=0.25, 0.50, 1.00 and 2.00 for the Reynolds number of 5000. For the present study, large eddy simulation (LES) using a dynamic Smagorinsky sub-grid stress (SGS) is applied on the hybrid grid system according to an advanced computer code based on the finite volume approach. Examination of obtained results reveals that the rate of interaction between the free-surface and the wake structure downstream of the spherical body is maximum for the case of h/d=0.25 and by increasing the submerging elevation, the rate of this interaction decreases. At the submerging elevation of h/d=2.00, the free-surface effects are minimum and beyond h/d=2.00 it may be assumed that these free-surface effects on the sphere wake structure disappear.en_US
dc.description.sponsorshipScientific and Technological Research Council of TurkeyTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [109R028]en_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 would also like to thank Cukurova University, Mechanical Engineering Department for providing the CFD facilities and Selcuk University's Scientific Research Project Office.en_US
dc.identifier.citationHassanzadeh, R., Şahin, B., Özgören, M., (2012). Large Eddy Simulation of Free-Surface Effects on the Wake Structures Downstream of a Spherical Body, Ocean Engıneerıng, (54), 213-222. Doi: 10.1016/j.oceaneng.2012.07.011
dc.identifier.doi10.1016/j.oceaneng.2012.07.011en_US
dc.identifier.endpage222en_US
dc.identifier.issn0029-8018en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage213en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.oceaneng.2012.07.011
dc.identifier.urihttps://hdl.handle.net/20.500.12395/28191
dc.identifier.volume54en_US
dc.identifier.wosWOS:000309619500020en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorÖzgören, Muammer
dc.language.isoenen_US
dc.publisherPermagon-Elsevıer Scıence Ltden_US
dc.relation.ispartofOcean Engıneerıngen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectComputational fluid dynamics (CFD)en_US
dc.subjectFree-surfaceen_US
dc.subjectHybrid grid systemen_US
dc.subjectLarge eddy simulation (LES)en_US
dc.subjectSpherical bodyen_US
dc.subjectWake structureen_US
dc.titleLarge Eddy Simulation of Free-Surface Effects on the Wake Structures Downstream of a Spherical Bodyen_US
dc.typeArticleen_US

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