Laminar mixed convection of power-law fluids in cylindrical enclosures with heated rotating top wall
dc.authorid | 0000-0003-3421-2020 | en_US |
dc.contributor.author | Turan, Osman | |
dc.contributor.author | Yigit, Sahin | |
dc.contributor.author | Liang, Ruibin | |
dc.contributor.author | Chakraborty, Nilanjan | |
dc.date.accessioned | 2021-03-20T20:13:05Z | |
dc.date.available | 2021-03-20T20:13:05Z | |
dc.date.issued | 2018 | |
dc.department | BTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümü | en_US |
dc.description.abstract | Laminar 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.sponsorship | Newton Research Collaboration Programme | en_US |
dc.description.sponsorship | This study was supported by the Newton Research Collaboration Programme and is hereby gratefully acknowledged. | en_US |
dc.identifier.doi | 10.1016/j.ijheatmasstransfer.2018.03.088 | en_US |
dc.identifier.endpage | 899 | en_US |
dc.identifier.issn | 0017-9310 | |
dc.identifier.issn | 1879-2189 | |
dc.identifier.scopusquality | Q1 | en_US |
dc.identifier.startpage | 885 | en_US |
dc.identifier.uri | http://doi.org/10.1016/j.ijheatmasstransfer.2018.03.088 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12885/786 | |
dc.identifier.volume | 124 | en_US |
dc.identifier.wos | WOS:000437077100075 | en_US |
dc.identifier.wosquality | Q1 | en_US |
dc.indekslendigikaynak | Web of Science | en_US |
dc.indekslendigikaynak | Scopus | en_US |
dc.institutionauthor | Turan, Osman | |
dc.language.iso | en | en_US |
dc.publisher | Pergamon-Elsevier Science Ltd | en_US |
dc.relation.ispartof | International Journal Of Heat And Mass Transfer | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Mixed convection | en_US |
dc.subject | Power-law fluid | en_US |
dc.subject | Rotating end wall | en_US |
dc.subject | Richardson number | en_US |
dc.subject | Prandtl number | en_US |
dc.title | Laminar mixed convection of power-law fluids in cylindrical enclosures with heated rotating top wall | en_US |
dc.type | Article | en_US |
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