CuO/WATER NANOFLUID FLOW OVER MICROSCALE BACKWARD-FACING STEP AND ANALYSIS OF HEAT TRANSFER PERFORMANCE

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dc.authoridEkiciler, Recep/0000-0003-1367-9465
dc.contributor.authorEkiciler, Recep
dc.contributor.authorArslan, Kamil
dc.date.accessioned2024-09-29T16:06:24Z
dc.date.available2024-09-29T16:06:24Z
dc.date.issued2018
dc.departmentKarabük Üniversitesien_US
dc.description.abstractThree-dimensional numerical simulation of steady-state laminar forced convection flow of a CuO/water nanofluid and heat transfer in a duct having a microscale backward-facing step (MBFS) are presented in this study. The study was conducted for determining the effects of nanoparticle volume fraction on the flow and heat transfer characteristics. The Reynolds number ranged from 100 to 1000. The step height and inlet height of the duct were 600 mu m and 400 mu m, respectively. The duct expansion ratio was 2.5. The downstream wall was subjected to a constant and uniform heat flux, whereas the other walls were insulated. The nanoparticle volume fraction varied from 1.0% to 4.0%. The Nusselt number and Darcy friction factor were obtained for each nanoparticle volume fraction. Plots of velocity streamlines were analyzed. It was found from the results of numerical simulation that the Nusselt number increases with increasing nanoparticle volume fraction and Reynolds number. The nanoparticle volume fraction does not exert any substantial effect on the Darcy friction factor and the length of the recirculation zone. Moreover, the performance evaluation criterion (PEC) was analyzed for nanoparticle volume fractions of 1.0%, 2.0%, 3.0%, and 4.0% of CuO. It was obtained that the volume fractions of 4.0% has the highest PEC in terms of heat transfer. It was obtained that while heat transfer for nanoparticle volume fraction of 30% and 4.0% the friction factor is superior for nanoparticle volume fraction of 1.0% and 2.0% due to the PEC number.en_US
dc.description.sponsorshipKarabuk University Research and Development Center, Turkey [KBU-BAP-15/2-YL-034]en_US
dc.description.sponsorshipThe authors would like to thank the Karabuk University Research and Development Center, Turkey for financial support of this project (Project No. KBU-BAP-15/2-YL-034).en_US
dc.identifier.doi10.1615/HeatTransRes.2018020931
dc.identifier.endpage1505en_US
dc.identifier.issn1064-2285
dc.identifier.issn2162-6561
dc.identifier.issue15en_US
dc.identifier.startpage1489en_US
dc.identifier.urihttps://doi.org/10.1615/HeatTransRes.2018020931
dc.identifier.urihttps://hdl.handle.net/20.500.14619/6818
dc.identifier.volume49en_US
dc.identifier.wosWOS:000441155400005en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_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.subjectlaminar flowen_US
dc.subjectCuO/water nanofluiden_US
dc.subjectmicroscale backward-facing stepen_US
dc.subjectforced convectionen_US
dc.subjectflow separationen_US
dc.subjectheat transferen_US
dc.subjectPECen_US
dc.subjectrecirculation zoneen_US
dc.titleCuO/WATER NANOFLUID FLOW OVER MICROSCALE BACKWARD-FACING STEP AND ANALYSIS OF HEAT TRANSFER PERFORMANCEen_US
dc.typeArticleen_US

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