Natural convection heat transfer of nanofluids in a partially divided enclosure

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dc.authorscopusid35616325700
dc.authorscopusid6602300270
dc.contributor.authorÖztuna S.
dc.contributor.authorKahveci K.
dc.date.accessioned2024-06-12T10:28:43Z
dc.date.available2024-06-12T10:28:43Z
dc.date.issued2013
dc.description.abstractIn this study, natural convection heat transfer of water-based nanofluids in a partially divided enclosure is investigated. Governing equations are solved for partition locations of 0.2, 0.4, 0.6, and 0.8, partition lengths of 0.25, 0.50, 0.75 and 1, solid volume fractions ranging from 0-10%, and Rayleigh numbers varying from 104 to 106. Three different nanoparticles, Cu, CuO, and Al2O3, are taken into consideration, and the ratio of the nanolayer thickness to the original particle radius is taken at a fixed value of 0.1. The results show that heat transfer decreases considerably with increasing partition height. Furthermore, as the distance of the partition from the hot wall increases, an initial decrease and subsequent increase is observed in the average Nusselt number for low Rayleigh numbers, and an initial increase and subsequent decrease is observed for high Rayleigh numbers. The results also reveal that heat transfer increases considerably when nanoparticles are used and that the largest and smallest increase are obtained for Cu and Al2O3 nanoparticles, respectively. Nanoparticle usage results in an increase in the average Nusselt number up to 35% for Ra=104, up to 32% for Ra=105, and up to 25% for Ra=106. The results also indicate that the average Nusselt number increases almost linearly with solid volume fraction. © 2013 TIBTD Printed in Turkey.en_US
dc.identifier.endpage154en_US
dc.identifier.issn1300-3615
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-84880205487en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage139en_US
dc.identifier.urihttps://hdl.handle.net/20.500.14551/17374
dc.identifier.volume33en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.relation.ispartofIsi Bilimi Ve Teknigi Dergisi/ Journal of Thermal Science and Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectEnclosure; Nanofluid; Natural Convection; Pdq; Stream Function; Vorticityen_US
dc.subjectGoverning Equations; Nanofluids; Particle Radii; Pdq; Rayleigh Number; Solid Volume Fraction; Streamfunctions; Water Based; Enclosures; Nanoparticles; Natural Convection; Nusselt Number; Volume Fraction; Vorticity; Nanofluidicsen_US
dc.titleNatural convection heat transfer of nanofluids in a partially divided enclosureen_US
dc.typeArticleen_US

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