Laminar mixed convection of power-law fluids in cylindrical enclosures with heated rotating top wall

Basit Öğe Kaydı
dc.authorid0000-0003-3421-2020en_US
dc.contributor.authorTuran, Osman
dc.contributor.authorYigit, Sahin
dc.contributor.authorLiang, Ruibin
dc.contributor.authorChakraborty, Nilanjan
dc.date.accessioned2021-03-20T20:13:05Z
dc.date.available2021-03-20T20:13:05Z
dc.date.issued2018
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümüen_US
dc.description.abstractLaminar mixed convection of inelastic non-Newtonian fluids obeying a power law model in a cylindrical enclosure with a heated rotating top cover has been investigated numerically in this study. The steadystate axisymmetric simulations have been carried out for a range of different nominal Reynolds, Prandtl, Richardson numbers (i.e. 500 <= Re <= 2000; 10 <= Pr <= 500 and 0 <= Ri <= 1) and power-law index (i.e. 0.6 <= n <= 1.8) for an aspect ratio (height/radius) of unity (i.e. AR = 1.0). It has been found that mean Nusselt number (Nu) over bar increases as Re and Pr increase, whereas (Nu) over bar decreases with increasing values of Ri for shear-thinning (i.e. n < 1), Newtonian (i.e. n = 1) and shear-thickening (i.e. n > 1) fluids. It has also been observed that the variation of Ni with n differs depending on the values of Re and Ri. For instance, for small values of Reynolds number, (Nu) over bar exhibits a non-monotonic trend (i.e. increases before reaching a maximum followed by a decreasing trend) with increasing n for small values of Richardson number, whereas (Nu) over bar monotonically increases with increasing values of n for high Richardson number cases. However, in the case of high Reynolds number, (Nu) over bar increases with n before reaching a maximum value which is followed by a decreasing trend for all values of Ri considered here. Detailed physical explanations are provided for the influences of Re, Pr, Ri, and n on (Nu) over bar based on an elaborate scaling analysis. Finally, the numerical findings have been used to propose a correlation for (Nu) over bar for the ranges of Re, Pr, Ri, n considered here. (C) 2018 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipNewton Research Collaboration Programmeen_US
dc.description.sponsorshipThis study was supported by the Newton Research Collaboration Programme and is hereby gratefully acknowledged.en_US
dc.identifier.doi10.1016/j.ijheatmasstransfer.2018.03.088en_US
dc.identifier.endpage899en_US
dc.identifier.issn0017-9310
dc.identifier.issn1879-2189
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage885en_US
dc.identifier.urihttp://doi.org/10.1016/j.ijheatmasstransfer.2018.03.088
dc.identifier.urihttps://hdl.handle.net/20.500.12885/786
dc.identifier.volume124en_US
dc.identifier.wosWOS:000437077100075en_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/openAccessen_US
dc.subjectMixed convectionen_US
dc.subjectPower-law fluiden_US
dc.subjectRotating end wallen_US
dc.subjectRichardson numberen_US
dc.subjectPrandtl numberen_US
dc.titleLaminar mixed convection of power-law fluids in cylindrical enclosures with heated rotating top wallen_US
dc.typeArticleen_US

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