An experimental investigation of the flow control of a circular cylinder in near wake with parallel plates at Re=7500

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dc.authoridDurhasan, Tahir/0000-0001-5212-9170
dc.contributor.authorDurhasan, Tahir
dc.contributor.authorEkinci, Firat
dc.contributor.authorFirat, Erhan
dc.contributor.authorAkilli, Huseyin
dc.date.accessioned2025-01-06T17:36:59Z
dc.date.available2025-01-06T17:36:59Z
dc.date.issued2024
dc.description.abstractThe vortex street suppression in the near wake region of the cylinder with parallel plates was investigated using particle image velocimetry (PIV) at Reynolds number of Re = 7500. The rigid plates are designed as flat, parallel with the free-stream direction, and located on both sides of the cylinder. Two different plate lengths (0.5D and 1D based on the cylinder diameter, D) were examined at gap ratios of g/D = 0.1, 0.3, 0.5, 0.7, and 0.9, respectively. Proper Orthogonal Decomposition (POD) analyses were also employed to reveal vortex mechanism in the near wake region. The gap ratio significantly influences the interaction of the vortices. At low gap ratios, the plates directly affect the development of shear layers on both side of the cylinder. The shear layers elongate downstream with a reduction of the vortex shedding frequency. Moreover, Reynolds shear stress, vortex shed-ding instabilities and vortex street are suppressed in the near wake region with the help of using parallel plates. On the other hand, vortex shedding reinforces instabilities at higher gap ratios. Besides, the most effective gap ratio is different for each the plate lengths to suppress instabilities.
dc.identifier.doi10.1016/j.ijheatfluidflow.2024.109276
dc.identifier.issn0142-727X
dc.identifier.issn1879-2278
dc.identifier.scopus2-s2.0-85181908742
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.ijheatfluidflow.2024.109276
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2063
dc.identifier.volume106
dc.identifier.wosWOS:001154518400001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Inc
dc.relation.ispartofInternational Journal of Heat and Fluid Flow
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectCircular cylinder
dc.subjectFlow control
dc.subjectParallel plates
dc.subjectPOD
dc.subjectVortex shedding instabilities
dc.titleAn experimental investigation of the flow control of a circular cylinder in near wake with parallel plates at Re=7500
dc.typeArticle

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