Thermal-hydraulic performance of the circular-slice-shaped-winglet for tube bank heat exchanger

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dc.authoridTEPE, Ahmet Umit/0000-0001-7626-6348
dc.contributor.authorTepe, Ahmet Umit
dc.contributor.authorYilmaz, Harun
dc.date.accessioned2025-03-23T19:41:22Z
dc.date.available2025-03-23T19:41:22Z
dc.date.issued2022
dc.departmentSinop Üniversitesi
dc.description.abstractIn this study, heat transfer performance of circular-slice-shaped-winglet (CSSW) for tube bank heat exchanger (TBHE) was numerically investigated. Circular-slice angle (alpha = 5 degrees, 10 degrees and 20 degrees), layer gap (h/d = 0.08, 0.14, and 0.20) and winglet diameter (D/d = 1.60, 1.76 and 1.92) were analyzed as geometric parameters to obtain optimal design. Comprehensive numerical simulations were conducted under both laminar and turbulent flow (1100 <= Re <= 8500) conditions. Navier Stokes Equations were solved by using RNG k-epsilon turbulence model (with enhanced wall treatment). Colburn-j factor (j), friction factor (f), modified London area goodness factor (j/f(1/3)) and performance evaluation criterion (PEC) were investigated quantitatively. Flow characteristics were also analyzed to elucidate the underlying physics of the effects of CSSW on thermal-hydraulic performance for TBHE. Results were compared with the data related to bare tube heat exchanger, and showed that the highest modified London area goodness factor is 26.34% with alpha = 10 degrees, h/d = 0.20 and D/d = 1.92 CSSW winglet design. Additionally, numerical calculations revealed that PEC increased to 1.356 with these CSSW design parameters, which corresponds to reduction of the required total heat transfer area by 36.60% compared to the bare tube heat exchanger for the same heat duty at a fixed pumping power.
dc.identifier.doi10.1016/j.ijthermalsci.2022.107711
dc.identifier.issn1290-0729
dc.identifier.issn1778-4166
dc.identifier.scopus2-s2.0-85131053294
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.ijthermalsci.2022.107711
dc.identifier.urihttps://hdl.handle.net/11486/6565
dc.identifier.volume179
dc.identifier.wosWOS:000808369300001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier France-Editions Scientifiques Medicales Elsevier
dc.relation.ispartofInternational Journal of Thermal Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectTube bank heat exchanger
dc.subjectWinglet
dc.subjectForced convection
dc.subjectCFD
dc.titleThermal-hydraulic performance of the circular-slice-shaped-winglet for tube bank heat exchanger
dc.typeArticle

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