Effects of Extended Jet Holes to Heat Transfer and Flow Characteristics of the Jet Impingement Cooling

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dc.authoridARSLAN, Kamil/0000-0002-1216-6812
dc.authoridTEPE, Ahmet Umit/0000-0001-7626-6348
dc.authoridUYSAL, UNAL/0000-0001-8330-4461
dc.contributor.authorTepe, Ahmet Umit
dc.contributor.authorArslan, Kamil
dc.contributor.authorYetisken, Yasar
dc.contributor.authorUysal, Unal
dc.date.accessioned2024-09-29T16:04:42Z
dc.date.available2024-09-29T16:04:42Z
dc.date.issued2019
dc.departmentKarabük Üniversitesien_US
dc.description.abstractIn this study, effects of extended jet holes to heat transfer and flow characteristics of jet impingement cooling were numerically investigated. Cross-flow in the impinging jet cooling adversely affects the heat transfer on the target surface. The main purpose of this study is to reduce the negative effect of cross-flow on heat transfer by extending jet holes toward the target surface with nozzles. This study has been conducted under turbulent flow condition (15,000 <= Re <= 45,000). The surface of the turbine blade, which is the target surface, has been modeled as a flat plate. The effect of the ribs, placed on the target surface, on the heat transfer has been also investigated, and the results were compared with the flat surface. The parameters such as average and local Nusselt numbers on the target surface, flow characteristics, and compressor power have been examined in detail. It was obtained from the numerical results that the average Nusselt number increases with decreasing the gap between the target surface and the nozzle. In addition, the higher average Nusselt number was obtained on the flat surface than the ribbed surface. The lowest compressor power was achieved in the 5Dj nozzle gap for the flat surface and in the 4Dj nozzle gap for the ribbed surface.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey [10.13039/501100004410]en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (Grant No. PN: 118M795; Funder ID: 10.13039/501100004410).en_US
dc.identifier.doi10.1115/1.4043893
dc.identifier.issn0022-1481
dc.identifier.issn1528-8943
dc.identifier.issue8en_US
dc.identifier.scopus2-s2.0-85067930968en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1115/1.4043893
dc.identifier.urihttps://hdl.handle.net/20.500.14619/6279
dc.identifier.volume141en_US
dc.identifier.wosWOS:000474736800013en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAsmeen_US
dc.relation.ispartofJournal of Heat Transfer-Transactions of the Asmeen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCFDen_US
dc.subjectimpinging jet coolingen_US
dc.subjectgas turbine bladeen_US
dc.subjectconvective heat transferen_US
dc.subjectnozzleen_US
dc.titleEffects of Extended Jet Holes to Heat Transfer and Flow Characteristics of the Jet Impingement Coolingen_US
dc.typeArticleen_US

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