Mixed convection due to a rotating cylinder in a 3D corrugated cavity filled with single walled CNT-water nanofluid

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dc.contributor.authorSelimefendigil F.
dc.contributor.authorOztop H.F.
dc.contributor.authorAbu-Hamdeh N.H.
dc.date.accessioned2024-07-22T08:08:59Z
dc.date.available2024-07-22T08:08:59Z
dc.date.issued2019
dc.description.abstractAnalysis of mixed convection due to a rotating inner cylinder in a corrugated three-dimensional cavity filled with carbon nanotube-water nanofluid was performed. Numerical simulations were performed by using Galerkin weighted residual finite element method. The three-dimensional corrugated cavity was differentially heated form the vertical surfaces, and an inner rotating adiabatic cylinder was used. Influence of Rayleigh number (between 10 4 and 10 6 ), angular rotational velocity of the cylinder (between − 50 and 50 rad/s), height (between H / 10 and H / 3) and number of triangular waves (between 1 and 16) and solid nanoparticle volume fraction (between 0 and 0.04) on the convective heat transfer characteristics was analyzed. It was observed that average heat transfer augments significantly by changing the nanoparticle volume fraction and up to 128% of enhancement is obtained. Depending on the rotational direction of the cylinder, average Nusselt number enhances 68 % in the three-dimensional cavity. Surface corrugation parameters are not as effective as solid particle volume fraction and angular rotational speed of the cylinder on the heat transfer enhancements. Finally, a correlation for the average Nusselt number along the cold surface was provided which is dependent upon the angular rotational speed of the cylinder and Rayleigh number. © 2018, Akadémiai Kiadó, Budapest, Hungary.
dc.identifier.DOI-ID10.1007/s10973-018-7068-3
dc.identifier.issn13886150
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/14606
dc.language.isoEnglish
dc.publisherSpringer Netherlands
dc.subjectCarbon nanotubes
dc.subjectCylinders (shapes)
dc.subjectMixed convection
dc.subjectNanometals
dc.subjectNanoparticles
dc.subjectNumerical methods
dc.subjectNusselt number
dc.subjectVolume fraction
dc.subjectYarn
dc.subjectAverage heat transfers
dc.subjectConvective heat transfer
dc.subjectCorrugated wall
dc.subjectHeat Transfer enhancement
dc.subjectNanofluids
dc.subjectNanoparticle volume fractions
dc.subjectRotating cylinders
dc.subjectThree dimensional cavity
dc.subjectNanofluidics
dc.titleMixed convection due to a rotating cylinder in a 3D corrugated cavity filled with single walled CNT-water nanofluid
dc.typeArticle

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