WHICH PARAMETER SHOULD BE USED IN EVALUATING NANOFLUID FLOWS: REYNOLDS NUMBER, VELOCITY, MASS FLOW RATE OR PUMPING POWER?

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dc.contributor.authorUysal, Cuneyt
dc.date.accessioned2024-09-29T16:06:24Z
dc.date.available2024-09-29T16:06:24Z
dc.date.issued2020
dc.departmentKarabük Üniversitesien_US
dc.description.abstractThe heat transfer, fluid flow, and entropy generation characteristics of a diamond-Fe3O4/water hybrid nanofluid are investigated numerically for different nanoparticle volume fractions under laminar flow conditions. In addition, diamond/water and Fe3O4/water nanofluids are investigated to compare with their hybrid form. The results are presented at the given Reynolds number, velocity, mass flow rate, and pumping power. As a result, overabundant enhancements are observed in thermal performances of nanofluids when evaluation is realized for the same Reynolds number. At Re = 2000, a diamond-Fe3O4/water hybrid nanofluid (phi = 0.2%) provides a convective heat transfer enhancement of 30.31%. However, at V = 1.3 m/s, the convective heat transfer coefficient obtained for a diamond-Fe3O4/water hybrid nanofluid (phi = 0.2%) is 2.17% higher than that of pure water. It is also observed that pure water has a better convective heat transfer rate compared to a diamond-Fe3O4/water hybrid nanofluid when the evaluation is performed at the same pumping power. Among all evaluation parameters, it is found that there is a minimum entropy generation point. Although it is difficult to decide, but the results obtained with evaluation performed at the same velocity or the same pumping power can be more realistic and reasonable.en_US
dc.identifier.doi10.1615/HeatTransRes.2019030372
dc.identifier.endpage497en_US
dc.identifier.issn1064-2285
dc.identifier.issn2162-6561
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-85084193210en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage447en_US
dc.identifier.urihttps://doi.org/10.1615/HeatTransRes.2019030372
dc.identifier.urihttps://hdl.handle.net/20.500.14619/6821
dc.identifier.volume51en_US
dc.identifier.wosWOS:000528252500005en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherBegell House Incen_US
dc.relation.ispartofHeat Transfer Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectconvective heat transferen_US
dc.subjectentropy generationen_US
dc.subjecthybrid nanofluiden_US
dc.subjectminichannelen_US
dc.subjectnanofluiden_US
dc.titleWHICH PARAMETER SHOULD BE USED IN EVALUATING NANOFLUID FLOWS: REYNOLDS NUMBER, VELOCITY, MASS FLOW RATE OR PUMPING POWER?en_US
dc.typeArticleen_US

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