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dc.contributor.authorJafarimoghaddam, Amin
dc.contributor.authorAberoumand, Sadegh
dc.date.accessioned2021-11-02T01:18:22Z
dc.date.available2021-11-02T01:18:22Z
dc.date.issued2017
dc.identifier.issn1099-2871
dc.identifier.doi10.1002/htj.21250
dc.identifier.urihttp://hdl.handle.net/10072/409631
dc.description.abstractThe present work provides an empirical investigation on the thermal characteristics of Ag/oil nanofluids flow inside a sinusoidal tube under a constant heat flux boundary condition. Ag/oil nanofluids have been prepared in low-volume concentrations of 0.011%, 0.044%, and 0.171%. The average size of the nanoparticles was 20 nm. A heated coil was attached to the upper and lower surface of the tube that satisfied the constant thermal boundary condition of 204 W. The experiment has been pursued at low Reynolds numbers less than 160. A loop was designed to keep the flow hydrodynamically fully developed during the experiment. The test case was a sinusoidal tube. Upper and lower surfaces of the tube have been designed sinusoidally. Moreover, the width of the plates was long enough, so the problem was not considerably affected by the three-dimensional releasing effect. Convective heat transfer coefficient and Nusselt number were calculated. It has been observed that based on the acquired data of the present work, convective heat transfer coefficient increased up to 23% for the best case (nanofluid with a volume concentration of 0.171%) compared to the base fluid. This happened while the rise of the friction factor was very low. In addition, a comparison between the new results and the previous work by authors showed the positive performance of sinusoidal tubes in increasing the convective heat transfer coefficient (the average increase was calculated to be about 82%) compared to the annular tube.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherJohn Wiley and Sons
dc.relation.ispartofpagefrom913
dc.relation.ispartofpageto923
dc.relation.ispartofissue7
dc.relation.ispartofjournalHeat Transfer
dc.relation.ispartofvolume46
dc.subject.fieldofresearchAerospace engineering
dc.subject.fieldofresearchMechanical engineering
dc.subject.fieldofresearchOther engineering
dc.subject.fieldofresearchcode4001
dc.subject.fieldofresearchcode4017
dc.subject.fieldofresearchcode4099
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsThermodynamics
dc.subject.keywordsAg/oil nanofluid
dc.subject.keywordsconvective heat transfer coefficient
dc.titleOn the performance of Ag/oil nanofluids in heat transfer enhancement in a sinusoidal tube: Constant heat flux boundary condition
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationJafarimoghaddam, A; Aberoumand, S, On the performance of Ag/oil nanofluids in heat transfer enhancement in a sinusoidal tube: Constant heat flux boundary condition, Heat Transfer, 2017, 46 (7), pp. 913-923
dc.date.updated2021-11-02T01:16:49Z
gro.hasfulltextNo Full Text
gro.griffith.authorAberoumand, Sadegh


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