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Effect of finite wall thickness on entropy generation and natural convection in a nanofluid-filled partially heated square cavity

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dc.citedby23
dc.contributor.authorIshak M.S.en_US
dc.contributor.authorAlsabery A.I.en_US
dc.contributor.authorChamkha A.en_US
dc.contributor.authorHashim I.en_US
dc.contributor.authorid57208024651en_US
dc.contributor.authorid56705372300en_US
dc.contributor.authorid35568909100en_US
dc.contributor.authorid10043682500en_US
dc.date.accessioned2023-05-29T08:11:02Z
dc.date.available2023-05-29T08:11:02Z
dc.date.issued2020
dc.descriptionAlumina; Aluminum oxide; Entropy; Finite difference method; Isotherms; Nanofluidics; Numerical methods; Thermal conductivity; Entropy generation; Entropy generation analysis; Finite wall thickness; Heat sources; Horizontal walls; Nanofluids; Solid wall; Square cavity; Wall thickness; Water nanofluids; Natural convectionen_US
dc.description.abstractPurpose: The purpose of this paper is to study the effects of finite wall thickness on the natural convection and entropy generation in a square cavity filled with Al2O3�water nanofluid in the presence of bottom heat source. Design/methodology/approach: The moving isothermal heater was placed on the bottom solid wall. The vertical walls (left and right walls) were fully maintained at low temperatures. The rest of the bottom solid wall along with the top horizontal wall was kept adiabatic. The boundaries of the domain are assumed to be impermeable; the fluid within the cavity is a water-based nanofluid having Al2O3 nanoparticles. The Boussinesq approximation is applicable. The dimensionless governing equations subject to the selected boundary conditions are solved using the finite difference method. The current proposed numerical method is proven excellent through comparisons with the existing experimental and numerical published studies. Findings: Numerical results were demonstrated graphically in several forms including streamlines, isotherms and local entropy generation, as well as the local and average Nusselt numbers. The results reveal that the thermal conductivity and thickness of the solid wall are important control parameters for optimization of heat transfer and Bejan number within the partially heated square cavity. Originality/value: According to the past research studies mentioned above and to the best of the authors� knowledge, the gap regarding the problem with entropy generation analysis and natural convection in partially heated square cavity has yet to be filled. Because of this, this study aims to investigate the entropy generation analysis as well as the natural convection in nanofluid-filled square cavity which was heated partially. A square cavity with an isothermal heater located on the bottom solid horizontal wall of the cavity and partly cold sidewalls are essential problems in thermal processing applications. Hence, the authors believe that this present work will be a valuable contribution in improving the thermal performance. � 2019, Emerald Publishing Limited.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1108/HFF-06-2019-0505
dc.identifier.epage1546
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85075942109
dc.identifier.spage1518
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85075942109&doi=10.1108%2fHFF-06-2019-0505&partnerID=40&md5=b5389b55b4274b43853d16a9e797641a
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/25569
dc.identifier.volume30
dc.publisherEmerald Publishingen_US
dc.sourceScopus
dc.sourcetitleInternational Journal of Numerical Methods for Heat and Fluid Flow
dc.titleEffect of finite wall thickness on entropy generation and natural convection in a nanofluid-filled partially heated square cavityen_US
dc.typeArticleen_US
dspace.entity.typePublication
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