Heat transfer in magneto-hybrid nanofluids with viscous and joule dissipation: a successive over relaxation analysis
The study is motivated by the increasing attention in enhancing heat transfer performance in electrically conducting fluids using hybrid nanoparticles, particularly under the influence of magnetic field, microscale fluidic behaviour and mass suction over stretching surfaces. In this article, we prop...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S259012302502554X |
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| Summary: | The study is motivated by the increasing attention in enhancing heat transfer performance in electrically conducting fluids using hybrid nanoparticles, particularly under the influence of magnetic field, microscale fluidic behaviour and mass suction over stretching surfaces. In this article, we propose an investigation on the rheological behaviour of water-ethylene mixture glycol (W/EG) containing titanium dioxide (TiO2) and silver (Ag) hybrid nanoparticles in the presence of an external magnetic field. The base fluid is assumed to have enough amount of electrical conductivity due to suspended nanoparticles to induce a magnetic field with in the flow field. A classical micropolar fluid model is modified to observe the micropolar nanofluid (Ag-W/EG) and micropolar hybrid nanofluid (Ag-TiO2-W/EG) numerically. The thermal balance equation for hybrid nanofluid is composed of heat conduction, viscous dissipation, volumetric heat generation and electrical dissipation. Mathematical model of the problem is simulated through successive over-relaxation (SOR) methodology to obtain the numerical solutions of the governing nonlinear partial differential equations. The results are compared with existing literature to validate our numerical algorithm. Each graph presents two sets of profiles within a single frame, allowing comparison of the efficiency between nanofluids and hybrid nanofluids across various dimensionless parameters. It is observed that induced magnetic field intensity increases with the coupling parameter, highlighting its significant role in magneto-hybrid nanofluids. Tables are arranged to demonstrate shear stress, couple stress, and heat transfer rate. Nusselt number has influentially enhanced by appending hybrid nano-constituents (Ag-TiO2) into the base liquid water-ethylene glycol mixture (C2H6O2–H2O). However, the efficiency of nanoparticles to enrich the heat transfer rate in hybrid nanofluids is optimal in the situations where magnetic field and mass suction effects are minimum, but convection is more dominant. |
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| ISSN: | 2590-1230 |