Effects of an inner stationary cylinder having an elastic rod-like extension on the mixed convection of CNT-water nanofluid in a three dimensional vented cavity

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dc.contributor.authorSelimefendigil F.
dc.contributor.authorÖztop H.F.
dc.date.accessioned2024-07-22T08:08:31Z
dc.date.available2024-07-22T08:08:31Z
dc.date.issued2019
dc.description.abstractNumerical study for the effects of an inner stationary cylinder having an elastic rod like extension on the mixed convection of CNT-water nanofluid in a three dimensional vented cavity was performed by using finite element method. Effects of various pertinent parameters such as Reynolds number (between 100 and 1000), elastic modulus of the flexible rod (between 105 and 108), size of the elastic rod (between 0.05H and 0.3H), size of the circular cylinder (between 0.025H and 0.25H), inclination angle of the left vertical surface of the cavity (between 0° and 30°) and CNT-nanoparticle solid volume fraction (between 0 and 4%) on the convective flow features in a 3D vented cavity were analyzed. It was observed that with the installation of the obstacle (cylinder + elastic rod) and changing its geometrical and other parameters (elasticity of the rod) affect the variations of established multiple re-circulation zones and isotherms with the three dimensional vented cavity. The average heat transfer rate for the left vertical surface deteriorated with higher inclination angle of the side surface of the cavity while the variations in the average heat transfer rate for the upper surface was found to be slight. Inclusion of the CNT nanoparticle results in average heat transfer enhancement which is about 60% at the highest nanoparticle solid volume fraction and the rate of enhancement was found to be independent of obstacle geometrical parameters, elasticity of the flexible wall and side surface inclination angle of the cavity. A correlation for the average Nusselt number is obtained in polynomial form for the configurations in the presence and absence of obstacles. © 2019 Elsevier Ltd
dc.identifier.DOI-ID10.1016/j.ijheatmasstransfer.2019.03.093
dc.identifier.issn00179310
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/14426
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectCircular cylinders
dc.subjectElasticity
dc.subjectFinite element method
dc.subjectMixed convection
dc.subjectNanoparticles
dc.subjectNumerical methods
dc.subjectReynolds number
dc.subjectVolume fraction
dc.subjectAverage heat transfers
dc.subjectInclination angles
dc.subjectNanofluids
dc.subjectObstacle
dc.subjectSolid volume fraction
dc.subjectSurface inclination angle
dc.subjectVented cavity
dc.subjectVertical surface
dc.subjectNanofluidics
dc.titleEffects of an inner stationary cylinder having an elastic rod-like extension on the mixed convection of CNT-water nanofluid in a three dimensional vented cavity
dc.typeArticle

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