Control of the flow past a sphere near a flat wall using passive jet

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dc.contributor.authorOkbaz, Abdulkerim
dc.contributor.authorOzgoren, Muammer
dc.contributor.authorDogan, Sercan
dc.contributor.authorCanpolat, Cetin
dc.contributor.authorAkilli, Huseyin
dc.contributor.authorSahin, Besir
dc.date.accessioned2024-02-23T14:13:20Z
dc.date.available2024-02-23T14:13:20Z
dc.date.issued2019
dc.departmentNEÜen_US
dc.description.abstractIn the present investigation, interactions between the vortices shedding from a single sphere and the boundary layer flow over a flat plate with various gap ratios have been investigated at Re = 5000 using the techniques of dye visualization and Particle Image Velocimetry. A passive jet has been created to control the flow past the sphere by a hole drilled into the sphere from the forward stagnation point to the rear of the sphere with various diameters. The results show that the complex flow downstream of the sphere, which is occurred from the combination of 'Carman vortex street and the boundary layer over the flat plate can be controlled by a passive jet. Because the jet flow interrupts periodicity of the vortices shedding from the sphere by supplying fluid flow into the wake with relatively high velocity. Presence of the hole significantly attenuates the magnitudes of the turbulence characteristics. Furthermore, the magnitudes of the turbulence characteristics decrease with increasing the hole diameter depending on the location of the sphere in the boundary layer. However, a larger hole diameter can result in higher turbulence levels in the region of the passive jet. Hence, the effectiveness of the each case (the diameter of the hole) changes with the location of the sphere over the flat plate.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [109R028]; Scientific Research Projects Office of Cukurova University [AAP20025]; Selcuk University's Scientific Research Project Office [11201040]; DPT project [2009K12180]en_US
dc.description.sponsorshipThe authors would like to acknowledge the funding of The Scientific and Technological Research Council of Turkey (TUBITAK) under contract No:109R028, Scientific Research Projects Office of Cukurova University Contract No: AAP20025, Selcuk University's Scientific Research Project Office Contract No: 11201040, and DPT project Contract No: 2009K12180.en_US
dc.identifier.doi10.1016/j.oceaneng.2019.106120
dc.identifier.issn0029-8018
dc.identifier.scopus2-s2.0-85068967403en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.oceaneng.2019.106120
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12399
dc.identifier.volume187en_US
dc.identifier.wosWOS:000487564700047en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofOcean Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFlow Controlen_US
dc.subjectPassive Jeten_US
dc.subjectPlyen_US
dc.subjectSphereen_US
dc.subjectTurbulenceen_US
dc.titleControl of the flow past a sphere near a flat wall using passive jeten_US
dc.typeArticleen_US

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