Conjugate natural convection of non-Newtonian hybrid nanofluid in wavy-shaped enclosure

doi:10.1007/s10483-022-2837-6

Abstract

Abstract: The present study concerns the modelization and numerical simulation for the heat and flow exchange characteristics in a novel configuration saturated with a non-Newtonian Ag-MgO hybrid nanofluid. The wavy shaped enclosure is equipped with one-quarter of a conducting solid cylinder. The system of equations resulting from the math-ematical modeling of the physical problem in its dimensionless form is discretized via the higher-order Galerkin-based finite element method (GFEM). The dependency of various factors and their interrelationships affecting the hydro-thermal behavior and heat exchange rate are delineated. The numerical experiments reveal that the best heat transfer rate is achieved for the pseudo-plastic hybrid nanoliquid with high Rayleigh number and thermal conductivity ratio and low Hartmann number. Besides, the power-law index has a major effect in deteriorating the heat convection at high Rayleigh number.

Key words: natural convection, waved-shaped cavity, magnetic field, hybrid nanofluid, higher order finite element method (FEM)

2010 MSC Number:

S. HUSSAIN, T. TAYEBI, T. ARMAGHANI, A. M. RASHAD, H. A. NABWEY. Conjugate natural convection of non-Newtonian hybrid nanofluid in wavy-shaped enclosure. Applied Mathematics and Mechanics (English Edition), 2022, 43(3): 447-466.

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References

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