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Natural convective heat transfer in a square enclosure utilizing magnetic nanoparticles

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dc.contributor.author Al-Balushi, Latifa M.
dc.contributor.author Uddin, Md. Jashim
dc.contributor.author Rahman, Mohammad
dc.date.accessioned 2018-10-14T06:44:03Z
dc.date.accessioned 2019-05-27T09:57:10Z
dc.date.available 2018-10-14T06:44:03Z
dc.date.available 2019-05-27T09:57:10Z
dc.date.issued 2018
dc.identifier.uri http://hdl.handle.net/20.500.11948/3387
dc.description.abstract In the present paper, unsteady natural convective heat transfer flow inside a square enclosure filled with nanofluids containing magnetic nanoparticles using nonhomogeneous dynamic model is investigated numerically. The horizontal top wall of the enclosure is considered a colder wall and the bottom wall is maintained at uniform temperature whereas two other vertical walls of the cavity are thermally insulated. The Galerkin weighted residual finite element method has been used to solve the governing non-dimensional partial differential equations. In numerical simulations, four types of nanoparticles such as magnetite (Fe3O4), cobalt ferrite (CoFe2O4), Mn-Zn ferrite (Mn-ZnFe2O4), and silicon dioxide (SiO2), and three types of base fluids such as water (H2O), engine oil (EO) and kerosene (Ke) have been considered. Comparisons with previously published work are performed and excellent agreement is obtained. The effects of various model parameters such as thermal Rayleigh number, nanoparticles volume fraction and nanoparticles shape factor are studied. The results show that the average Nusselt number increases as the thermal Rayleigh number and nanoparticles volume fraction intensify. The results indicate that the average Nusselt numbers are higher for the blade shape of nanoparticles. Kerosene-based nanofluids exhibit higher heat transfer rate. Mn-ZnFe2O4-Kerosene nanofluid has a higher average Nusselt number than that of other 11 types of nanofluids which are studied in the present analysis. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Enclosures en_US
dc.subject Nanoparticles en_US
dc.subject Heat Transfer en_US
dc.subject Kerosene en_US
dc.subject Nusselt Number en_US
dc.subject Ferrite en_US
dc.subject Volume Fraction en_US
dc.title Natural convective heat transfer in a square enclosure utilizing magnetic nanoparticles en_US
dc.type Article en_US

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