Free convection of power-law fluids in enclosures with partially heating from bottom and symmetrical cooling from sides

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dc.authorid0000-0003-3421-2020en_US
dc.contributor.authorYigit, Sahin
dc.contributor.authorBattu, Madhusudhan
dc.contributor.authorTuran, Osman
dc.contributor.authorChakraborty, Nilanjan
dc.date.accessioned2021-03-20T20:12:25Z
dc.date.available2021-03-20T20:12:25Z
dc.date.issued2019
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümüen_US
dc.description.abstractSteady-state laminar free convection of power-law fluids in a square enclosure with partial heating from below and symmetrical cooling from sides has been investigated based on numerical simulations. The partially heating is conducted by a centrally heated heat source on the bottom wall for different values of normalised heat source length IA (ranging from 0.2 to 0.8); power-law index n (from 0.6 to 1.8); nominal Rayleigh number (Ra) (from 10(3) to 10(6)) and nominal Prandtl number Pr (from 10 to 10(3)). An increase in the power-law index n leads to weakening of thermal advection owing to the augmentation of viscous resistance. This is reflected as an increment in the mean Nusselt number (Nu) over bar with decreasing value of n. Additionally, (Nu) over bar increases with an increase in Ra and IA for shear thinning (i.e. n < 1), Newtonian (i.e. n = 1) and shear thickening (i.e. n > 1) fluids. The observed influences of Ra, Pr, n and 1/L on (Nu) over bar have been explained by physical and scaling arguments and parameterized by a correlation for the mean Nusselt number. (C) 2019 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.ijheatmasstransfer.2019.118782en_US
dc.identifier.issn0017-9310
dc.identifier.issn1879-2189
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttp://doi.org/10.1016/j.ijheatmasstransfer.2019.118782
dc.identifier.urihttps://hdl.handle.net/20.500.12885/542
dc.identifier.volume145en_US
dc.identifier.wosWOS:000494883600076en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorTuran, Osman
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofInternational Journal Of Heat And Mass Transferen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFree convectionen_US
dc.subjectNon-Newtonian fluidsen_US
dc.subjectPartially heated wallen_US
dc.subjectSquare enclosureen_US
dc.subjectPower-law modelen_US
dc.titleFree convection of power-law fluids in enclosures with partially heating from bottom and symmetrical cooling from sidesen_US
dc.typeArticleen_US

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