Improvement of heat transfer from high heat flux surfaces by using vortex promoters with different geometries and impinging jets

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dc.authoridBaskaya, Senol/0000-0001-9676-4387
dc.authoridKILIC, MUSTAFA/0000-0002-8006-149X
dc.contributor.authorKılıç, Mustafa
dc.contributor.authorBaşkaya, Şenol
dc.date.accessioned2025-01-06T17:43:18Z
dc.date.available2025-01-06T17:43:18Z
dc.date.issued2017
dc.description.abstractIn this study; the enhancement of heat transfer from a surface with constant heat flux using an impinging jet and different shapes of vortex promoters was investigated numerically. Firstly, fluid flow and heat transfer in a channel were investigated for different Reynolds numbers, and ratio of channel height to nozzle hydraulic diameter (H/Dh), without using vortex promoters. Afterwards, effects of cylindrical, square and triangular vortex promoters on fluid flow and heat transfer for ratio of distance of vortex promoter to jet center to nozzle hydraulic diameter were investigated. In the last phase; effects of second group of vortex promoters were investigated on heat transfer and fluid flow. As a result; by using impinging jets and vortex promoters an increase of 28% on heat transfer from the surface can be observed according to the condition without vortex promoter. With increasing Reynolds number an increase on heat transfer was observed. Decreasing the channel height does not increase the heat transfer significantly. For the cylindrical vortex promoters maximum local Nusselt number is obtained at L/Dh=1.4. The most effective heat transfer is obtained with triangular vortex promoters. Using second group of vortex promoters can cause an increase of 36.1 % on heat transfer locally, but cannot cause a prominent increase on heat transfer along the target plate generally. Additionally, it is observed that the low Reynolds k-epsilon turbulent model can represent temperature variation and flow characteristic quite well.
dc.identifier.doi10.17341/gazimmfd.337616
dc.identifier.endpage707
dc.identifier.issn1300-1884
dc.identifier.issn1304-4915
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85029410513
dc.identifier.scopusqualityQ2
dc.identifier.startpage693
dc.identifier.urihttps://doi.org/10.17341/gazimmfd.337616
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2603
dc.identifier.volume32
dc.identifier.wosWOS:000412800400007
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isotr
dc.publisherGazi Univ, Fac Engineering Architecture
dc.relation.ispartofJournal of The Faculty of Engineering and Architecture of Gazi University
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjectImpinging jet
dc.subjectheat transfer
dc.subjectvortex promoters
dc.subjectcomputational fluid
dc.subjectdynamics
dc.titleImprovement of heat transfer from high heat flux surfaces by using vortex promoters with different geometries and impinging jets
dc.title.alternativeFarkli geometride akis yönlendiriciler ve çarpan jet kullanarak yüksek isi akili bir yüzeyden olan isi transferinin iyilestirilmesi
dc.typeArticle

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