Experımental ınvestıgatıon of thermal performance and entropy analysıs of sphere turbulators

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dc.contributor.authorKarakuş, Taha Resul
dc.contributor.authorFırat, İlker
dc.contributor.authorYıldırım, Orhan
dc.contributor.authorSönmez, Fatin
dc.contributor.authorÇiçek Kocali, Sevinç Sevgi
dc.contributor.authorYıldız, Abdussamed
dc.contributor.authorKaragöz, Sendoğan
dc.date.accessioned2025-06-13T10:26:45Z
dc.date.available2025-06-13T10:26:45Z
dc.date.issued2025
dc.departmentAÇÜ, Artvin Meslek Yüksekokulu, Makine Bölümü
dc.description.abstractIn this study, the effects of different numbers of sphere turbulators placed in a cir-cular-shaped test pipe under turbulent flow conditions on heat transfer, friction factor, thermal performance factor and entropy production were experimentally investigated. Water was used as the working fluid in the experiments carried out in the number range Re = 8379-16701. Initially, plain pipe and supported plain pipe experiments were carried out by keeping the fluid inlet temperature and test pipe surface temperature constant. Then, 1, 2, and 3 sphere turbulator experiments were carried out under the same conditions, respectively. According to the find-ings, the maximum Nusselt number increase compared to the supported plain pipe was 83.34% for the test pipe with 3 sphere turbulators. The minimum and maxi-mum Nu number increase rates of 3 sphere turbulators compared to 1 and 2 sphere turbulators were obtained as 42.61%-46.93% and 13.99%-17.11%, respectively. The increase rates of maximum friction factors of 1, 2, and 3 sphere turbulators compared to the supported plain pipe were 174.42%, 226.70%, and 306.53%, re-spectively. In addition, the maximum total entropy rate for sphere turbulators was obtained as 0.058 W/mK for 1 sphere turbulator at Re = 8379. In terms of the sec-ond law, the maximum entropy generation of sphere turbulators compared to the supported plain pipe decreased by 79.39% for 3 sphere turbulators at Re = 8379. As a result, it was concluded that the optimum number of sphere turbulators is 3 sphere turbulators with the lowest entropy production number and the highest ther-mal performance factor value (1.28).
dc.identifier.doi10.2298/TSCI240304165K
dc.identifier.endpage129
dc.identifier.issn03549836
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85219432800
dc.identifier.scopusqualityQ3
dc.identifier.startpage117
dc.identifier.urihttps://hdl.handle.net/11494/5501
dc.identifier.volume29
dc.identifier.wosWOS:001451262300010
dc.identifier.wosqualityQ4
dc.indekslendigikaynakScopus
dc.indekslendigikaynakWeb of Science
dc.institutionauthorSönmez, Fatin
dc.language.isoen
dc.publisherSerbian Society of Heat Transfer Engineers
dc.relation.ispartofThermal Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectEntropy
dc.subjectReynolds number
dc.subjectThermal performance
dc.subjectTurbulator
dc.titleExperımental ınvestıgatıon of thermal performance and entropy analysıs of sphere turbulators
dc.typeArticle

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