Energy analysis of magnetite nanofluid flowing in newly designed sudden expansion tube retrofitted with dimpled fin

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dc.authoridGURSOY, EMREHAN/0000-0003-2373-3357
dc.authoridDagdeviren, Abdullah/0000-0002-5418-4445
dc.authoridARSLAN, Kamil/0000-0002-1216-6812
dc.authoridGurdal, Mehmet/0000-0003-2209-3394
dc.contributor.authorGuersoy, Emrehan
dc.contributor.authorPazarlioglu, Hayati Kadir
dc.contributor.authorDagdeviren, Abdullah
dc.contributor.authorGuerdal, Mehmet
dc.contributor.authorGedik, Engin
dc.contributor.authorArslan, Kamil
dc.contributor.authorKurt, Hueseyin
dc.date.accessioned2024-09-29T15:57:17Z
dc.date.available2024-09-29T15:57:17Z
dc.date.issued2022
dc.departmentKarabük Üniversitesien_US
dc.description.abstractSudden expansion geometry plays an important role in the design of many engineering applications such as heat exchangers to avoid thermal stress on welded joints. While the heat transfer in these geometries is maximized at the reattachment points, it decreases to a minimum in the recirculation regions created by the fluid. To prevent this situation and improve the performance of the expansion tubes, nanofluid, and expanded surfaces can be used. For this purpose, forced convection of magnetite nanofluid flow in various expansion ratios has been investigated numerically in this study. Analyses have been performed on Reynolds ( Re ) numbers ranging from 100 to 2000, constant and uniform heat flux at 600 W/m(2), and volume concentrations (1.0 <=phi <= 2.0 vol.%). The result showed that while the Nu number increases with increasing Re number , the most efficient case is Dimpled Tube ( DT ) 9, and the highest value of performance evaluation criteria (PEC) has been obtained at phi= 2.0 vol.%. Compared with the water, the highest Nu number value has been obtained as 3.34% increased at Re = 20 0 0 and phi= 2.0 vol.%. When compared to the DT9 and Smooth Tube ( ST ) 1 where water was used as the working fluid at Re = 20 0 0 and phi= 2.0 vol.%, the PEC value increased by 8.66% and 110.31%, respectively. In addition, the bottom wall of the DT9 case performs higher convective heat transfer rate than the top wall.(c) 2022 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.ijheatmasstransfer.2022.123446
dc.identifier.issn0017-9310
dc.identifier.issn1879-2189
dc.identifier.scopus2-s2.0-85138148674en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.ijheatmasstransfer.2022.123446
dc.identifier.urihttps://hdl.handle.net/20.500.14619/4722
dc.identifier.volume199en_US
dc.identifier.wosWOS:000874924100002en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofInternational Journal of Heat and Mass Transferen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSudden expansion tubeen_US
dc.subjectDimpled finen_US
dc.subjectMagnetite nanofluiden_US
dc.subjectConvective heat transferen_US
dc.subjectCFDen_US
dc.titleEnergy analysis of magnetite nanofluid flowing in newly designed sudden expansion tube retrofitted with dimpled finen_US
dc.typeArticleen_US

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