FLOW STRUCTURE FROM A HORIZONTAL CYLINDER COINCIDENT WITH A FREE SURFACE IN SHALLOW WATER FLOW

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dc.contributor.authorKahraman, Ali
dc.contributor.authorOzgoren, Muammer
dc.contributor.authorSahin, Besir
dc.date.accessioned2020-03-26T18:30:37Z
dc.date.available2020-03-26T18:30:37Z
dc.date.issued2012
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractVortex formation from a horizontal cylinder coincident with a free surface of a shallow water flow having a depth of 25.4 mm was experimentally investigated using the particle image velocimetry technique. Instantaneous and time-averaged flow patterns in the wake region of the cylinder were examined for three different cylinder diameter values under the fully developed turbulent boundary layer condition. Reynolds numbers were in the range of 1124 <= Re <= 3374 and Froude numbers were in the range of 0.41 <= Fr <= 0.71 based on the cylinder diameter. It was found that a jet-like flow giving rise to increasing the flow entrainment between the core and wake regions depending on the cylinder diameter was formed between the lower surface of the cylinder and bottom surface of the channel. Vorticity intensity, Reynolds stress correlations, and the primary recirculating bubble lengths were grown to higher values with increasing the cylinder diameter. On the other hand, in the case of the lowest level of the jet-like flow emanating from the beneath of the smallest cylinder, the variation of flow characteristics were attenuated significantly in a shorter distance. The variation of the reattachment location of the separated flow to the free-surface is a strong function of the cylinder diameter and the Froude number.en_US
dc.identifier.doi10.2298/TSCI110719087Ken_US
dc.identifier.endpage107en_US
dc.identifier.issn0354-9836en_US
dc.identifier.issn2334-7163en_US
dc.identifier.issue1en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage93en_US
dc.identifier.urihttps://dx.doi.org/10.2298/TSCI110719087K
dc.identifier.urihttps://hdl.handle.net/20.500.12395/28069
dc.identifier.volume16en_US
dc.identifier.wosWOS:000303348700010en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherVINCA INST NUCLEAR SCIen_US
dc.relation.ispartofTHERMAL SCIENCEen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjecthorizontal cylinderen_US
dc.subjectparticle image velocimetryen_US
dc.subjectreattachmenten_US
dc.subjectshallow water flowen_US
dc.subjectvorticityen_US
dc.subjectwake regionen_US
dc.titleFLOW STRUCTURE FROM A HORIZONTAL CYLINDER COINCIDENT WITH A FREE SURFACE IN SHALLOW WATER FLOWen_US
dc.typeArticleen_US

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