Modeling and optimization of MHD mixed convection in a lid-driven trapezoidal cavity filled with alumina–water nanofluid: Effects of electrical conductivity models

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dc.contributor.authorSelimefendigil F.
dc.contributor.authorÖztop H.F.
dc.date.accessioned2024-07-22T08:10:01Z
dc.date.available2024-07-22T08:10:01Z
dc.date.issued2018
dc.description.abstractIn this study, mixed convection in a lid driven trapezoidal cavity filled with Al2O3–water nanofluid under the effect of an inclined magnetic field was numerically investigated for various electrical conductivity models. The top and bottom wall of the trapezoidal cavity were maintained at constant cold and hot temperatures and the top wall is moving at a constant speed in positive x direction. The governing equations are solved with finite element method. Numerical simulations were performed for different values of Richardson numbers (between 0.01 and 25), strength and orientation of the uniform magnetic field (Hartmann number (between 0 and 40), magnetic inclination angle (between 0o and 90o)) and solid volume fraction of the nanofluid (between 0 and 0.03) for different electrical conductivity models. It was observed that as the value of the Richardson number, strength of the magnetic field and solid particle volume fractions enhance, discrepancy between the average Nusselt number increases for systems with different electrical conductivity models. Magnetic inclination angle for which the difference between average heat transfer rate is minimized for different electrical conductivity models depends on the side wall inclination angle of the trapezoidal cavity. After performing an optimization study, it was found that the optimum value of magnetic inclination angle is dependent on the electrical conductivity model. © 2017 Elsevier Ltd
dc.identifier.DOI-ID10.1016/j.ijmecsci.2017.12.035
dc.identifier.issn00207403
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/15053
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectAlumina
dc.subjectElectric conductivity
dc.subjectElectric conductivity of solids
dc.subjectHeat transfer
dc.subjectMagnetic fields
dc.subjectMagnetism
dc.subjectMagnetohydrodynamics
dc.subjectMixed convection
dc.subjectNanofluidics
dc.subjectOptimization
dc.subjectVolume fraction
dc.subjectAverage heat transfers
dc.subjectElectrical conductivity
dc.subjectInclined magnetic fields
dc.subjectMHD flow
dc.subjectModeling and optimization
dc.subjectNanofluids
dc.subjectTrapezoidal cavity
dc.subjectUniform magnetic fields
dc.subjectFinite element method
dc.titleModeling and optimization of MHD mixed convection in a lid-driven trapezoidal cavity filled with alumina–water nanofluid: Effects of electrical conductivity models
dc.typeArticle

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