Nanofluid flow driven by thermal and magnetic forces – Experimental and numerical studies

Elzbieta Fornalik-Wajs, Aleksandra Roszko and Janusz Donizak

Energy, 2020, vol. 201, issue C

Abstract: Since the nineties, when first nanofluid preparation was reported, the nanofluids are attracting more and more attention. It is mainly due to their potential in the heat transport processes. Introduction of nanofluids in a strong magnetic field, as it is done in this studies, has the same aim – heat transfer enhancement. Additional goal of presented research is connected with a deep understanding of a weakly magnetic nanoparticles behaviour in a fluid, influenced by magnetic environment. Due to the nanofluids opaqueness, it is not possible to use the optical experimental methods for investigations of transport phenomena, especially momentum transport and connected with it flow structure. Therefore, the numerical studies were conducted to get an information about the forces and their mutual interaction, influencing transport processes occurring in the system, which was differentially heated and filled with silver nanofluid under operation of the strong magnetic field (up to 10 (T)). The results of numerical analysis were compared with experimental ones related to the heat transfer processes and average value of the Nusselt number. Very good agreement between the results was obtained.

Keywords: Silver nanofluid; Two-phase approach; Nusselt number; Strong magnetic field; Heat transfer intensification (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:201:y:2020:i:c:s0360544220307659

DOI: 10.1016/j.energy.2020.117658

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