3D numerical study and comparison of thermal-flow performance of various annular finned-tube designs

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dc.contributor.authorTahrour, Farouk
dc.contributor.authorAhmad, Hijaz
dc.contributor.authorAmeur, Houari
dc.contributor.authorSaeed, Tareq
dc.contributor.authorAbu-Zinadah, Hanaa
dc.contributor.authorMenni, Younes
dc.date.accessioned2023-01-18T10:52:26Z
dc.date.available2023-01-18T10:52:26Z
dc.date.issued2022en_US
dc.departmentRektörlük, Bilişim Teknolojileri Uygulama ve Araştırma Merkezien_US
dc.description.abstractWith the increase of heat transfer problems in marine vehicles and submerged power stations in oceans, the search for an efficient finned-tube heat exchanger has become particularly important. The purpose of the present investigation is to analyze and compare the thermal exchange and flow characteristics between five different fin designs, namely: a concentric circular finned-tube (CCFT), an eccentric circular finned-tube (ECFT), a perforated circular finned-tube (PCFT), a serrated circular finned-tube (SCFT), and a star-shaped finned-tube (S-SFT). The fin design and spacing impact on the thermal-flow performance of a heat exchanger was computed at Reynolds numbers varying from 4,300 to 15,000. From the numerical results, and when the fin spacing has been changed from 2 to 7 mm, an enhancement in the Colburn factor and a reduction in the friction factor and fin performances were observed for all cases under study. Three criteria were checked to select the most efficient fin design: the performance evaluation criterion PEC, the global performance criterion GPC, and the mass global performance criterionMG. Whatever the value of Reynolds number, the conventional CCFT provided the lowest performance evaluation criterion PEC, while the SCFT gave the highest amount of PEC. The most significant value of GPC was reached with the ECFT; however, GPC remained almost the same for CCFT, PCFT, SCFT, and S-SFT. In terms of the mass global performance criterion, the S-SFT provides the highest MGpcas compared with the full fins of CCFT (41–73% higher) and ECFT (29–54% higher). Thus, the heat exchanger with S-SFT is recommended to be used in the cooling of offshore energy systems.en_US
dc.identifier.doi10.1016/j.joes.2022.02.009en_US
dc.identifier.urihttps://hdl.handle.net/11467/6052
dc.identifier.urihttps://doi.org/10.1016/j.joes.2022.02.009
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherShanghai Jiaotong Universityen_US
dc.relation.ispartofJournal of Ocean Engineering and Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectEccentric fins; Finned-tube designs; Perforated fins; Star-shaped fins; Thermal-flow performanceen_US
dc.title3D numerical study and comparison of thermal-flow performance of various annular finned-tube designsen_US
dc.typeArticleen_US

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