Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
Volume 36, Issue 24, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217979222501557
Keywords
Maxwell nanofluid; magnetohydrodynamic (MHD); mixed convection; variable conductivity; nonuniform heat source; sink
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This study investigates the thermal effectiveness of nanoparticles in transient flow of a Maxwell fluid and examines the properties of mixed convection and magnetic field. The results show that the buoyancy ratio and mixed convection parameters enhance the velocity field, and the heat transfer rate increases significantly with the increase of thermophoretic and Brownian diffusion parameters. Additionally, the effect of a nonuniform heat source/sink leads to an increasing trend in the temperature profile.
Nowadays, the heat transfer potential of the base fluids can also be improved by adding nanoparticles to them. These nanotechnology-based fluids, called nanofluid, have superior properties such as high thermal conductivity, large critical heat flux (CHF) and improved heat transfer coefficient. The purpose of this paper is to study the thermal effectiveness of nanoparticles in transient flow of Maxwell fluid together the properties of mixed convection and magnetic field. Thermal field is controlled with the novel aspects of variable conductivity and nonuniform heat sink/source. Additionally, the impact of Brownian and thermophoretic diffusions is considered caused by nanoparticles dispersion in the fluid. The appropriate conversions yield the governing nonlinear ordinary differential system. Homotopic approach has been utilized to attain the solution of differential system and results are envisioned graphically. This study explores that the buoyancy ratio and mixed convection parameters enhance the velocity field. Further, the heat transfer rate rises significantly as the thermophoretic and Brownian diffusion parameters increase. Moreover, the effect of nonuniform heat source/sink on temperature field is noticed to be an increasing trend of temperature profile.
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