Optimizing Heat Management of Nanofluids' Thermal Transfer

Document Type : Research Paper

Authors
1 Faculty of Science, Moulay Ismail University, Meknes, 50000, Morocco
2 LRPSI, Polydisciplinary Faculty, Sultan Moulay Slimane University, Beni Mellal, 23000, Morocco
3 SEMES Research Team, Faculty of Applied Sciences, Moulay Slimane University, Beni Mellal, Morocco
4 Department of Engineering Thermodynamics, Faculty of Mechanical Engineering and Mecatronics, Politehnica University, Splaiul Independentei, 313, sector 6, 060042, Bucharest, Romania
Abstract
Nowadays, in various industrial applications, nanofluids have been implemented to improve the rate of heat transfer. This study explores, using the lattice Boltzmann method, natural convection heat transfer optimization in different enclosures in the presence of a heated source and obstacle effects commonly used in chemical reactors, electronic cooling, heat exchangers, and thermal storage tools. The main focus is to examine the consequences of radiative mono/hybrid nanofluids, different solid nanoparticles dispersed in water, on heat transfer in an enclosure. This study deals with the effects of mono/hybrid nanofluids on natural convection and thermal transmission enhancement of the fluid in a cabinet having a local heat source in the enclosure center and two thermally insulated obstacles which are placed in the enclosure at different positions. The analysis was conducted on various parameters spanning wide ranges, including nanoparticles' volume fraction, type of nanofluid (mono or hybrid), presence of a heat source and its position, and Rayleigh numbers for hydrodynamics and thermodynamics. The influences of these factors on heat transfer, flow patterns, and velocities were analyzed. It has been revealed that an increase in the percentage of nanoparticles and the Rayleigh number improves momentum and thermal transfer rates. In addition, the hybrid nanofluid Al2O3-Cu/H2O demonstrates an extensive enhancement in natural convection heat transfer performance compared to other types of hybrid nanofluids.
Keywords
Subjects

Publisher’s Note Shahid Chamran University of Ahvaz remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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