Heat and Flow Characteristics of Aerofoil-Shaped Fins on a Curved Target Surface in a Confined Channel for an Impinging Jet Array

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dc.authoridDurmaz, Ufuk/0000-0001-5534-8117
dc.authoridTEPE, Ahmet Umit/0000-0001-7626-6348
dc.authoridBenim, Prof. Dr.-Ing. habil. Ali Cemal/0000-0002-8642-2225
dc.authoridYalcinkaya, Orhan/0000-0003-2380-1727
dc.contributor.authorYalcinkaya, Orhan
dc.contributor.authorDurmaz, Ufuk
dc.contributor.authorTepe, Ahmet Umit
dc.contributor.authorBenim, Ali Cemal
dc.contributor.authorUysal, Unal
dc.date.accessioned2025-03-17T12:25:16Z
dc.date.available2025-03-17T12:25:16Z
dc.date.issued2024
dc.departmentTarsus Üniversitesi
dc.description.abstractThe main purpose of this investigation was to explore the heat transfer and flow characteristics of aero-foil-shaped fins combined with extended jet holes, specifically focusing on their feasibility in cooling turbine blades. In this study, a comprehensive investigation was carried out by applying impinging jet array cooling (IJAC) on a semi-circular curved surface, which was roughened using aerofoil-shaped fins. Numerical computations were conducted under three different Reynolds numbers (Re) ranging from 5000 to 25,000, while nozzle-to-target surface spacings (S/d) ranged from 0.5 to 8.0. Furthermore, an assessment was made of the impact of different fin arrangements, single-row (L1), double-row (L2), and triple-row (L3), on convective heat transfer. Detailed examinations were performed on area-averaged and local Nusselt (Nu) numbers, flow properties, and the thermal performance criterion (TPC) on finned and smooth target surfaces. The study's results revealed that the use of aerofoil-shaped fins and the reduction in S/d, along with surface roughening, led to significant increases in the local and area-averaged Nu numbers compared to the conventional IJAC scheme. The most notable heat transfer enhancement was observed at S/d = 0.5 utilizing extended jets and the surface design incorporating aerofoil-shaped fins. Under these specific conditions, the maximum heat transfer enhancement reached 52.81%. Moreover, the investigation also demonstrated that the highest TPC on the finned surface was achieved when S/d = 2.0 for L2 at Re = 25,000, resulting in a TPC value of 1.12. Furthermore, reducing S/d and mounting aerofoil-shaped fins on the surface yielded a more uniform heat transfer distribution on the relevant surface than IJAC with a smooth surface, ensuring a relatively more uniform heat transfer distribution to minimize the risk of localized overheating.
dc.identifier.doi10.3390/en17051238
dc.identifier.issn1996-1073
dc.identifier.issue5
dc.identifier.scopus2-s2.0-85187478648
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.3390/en17051238
dc.identifier.urihttps://hdl.handle.net/20.500.13099/1589
dc.identifier.volume17
dc.identifier.wosWOS:001182855800001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherMdpi
dc.relation.ispartofEnergies
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250316
dc.subjectaerofoil-shaped fin
dc.subjectimpinging jet array
dc.subjectcooling of turbine blades
dc.subjectheat transfer uniformity
dc.subjectpin-fin row
dc.titleHeat and Flow Characteristics of Aerofoil-Shaped Fins on a Curved Target Surface in a Confined Channel for an Impinging Jet Array
dc.typeArticle

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