Spatial–temporal analysis of magnetohydrodynamics flow and energy flux of power-law nanofluid in a confined domain

Energy flux analysis of power-law fluid is a novel contribution to recent developments in computational fluid dynamics. The study of the unsteady two-dimensional flow with double diffusive effect inside a complex enclosure exhibits great potential in optimizing the heat transfer rate due to the wavy...

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Bibliographic Details
Published in:Physics of fluids (1994) 2023-09, Vol.35 (9)
Main Authors: Nishad, Surabhi, Bhargava, Rama, Nayak, Ameeya Kumar, Weigand, Bernhard
Format: Article
Language:English
Subjects:
Brownian motion
Computational fluid dynamics
Computing time
Enclosures
Entropy
Finite volume method
Fluid dynamics
Fluid flow
Free convection
Magnetohydrodynamics
Nanofluids
Parameters
Physics
Power law
Prandtl number
Thermophoresis
Two dimensional flow
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Summary:Energy flux analysis of power-law fluid is a novel contribution to recent developments in computational fluid dynamics. The study of the unsteady two-dimensional flow with double diffusive effect inside a complex enclosure exhibits great potential in optimizing the heat transfer rate due to the wavy nature of the side walls. The enclosure is confined with the flow circulation due to the thermal and solutal gradients acting along the left and right wavy walls. The computational time and accuracy in results are estimated and compared by implementing the finite volume method and element-free Galerkin technique. The results are obtained in terms of streamlines, isotherms, isoconcentrations, average Nusselt number, Sherwood number, and total entropy generation due to the effect of conventional parameters, namely, power-law index, Rayleigh number, buoyancy ratio parameter, thermophoresis parameter, Brownian motion parameter, and Lewis number with a fixed Prandtl number throughout the computation. The optimized double-diffusive natural convection analysis is based on entropy generation and a calculated Bejan number. The novelty of this paper lies in the implementation of a mesh-free approach, which may be useful for the further analysis of elliptical/semi-elliptical structures.
ISSN:1070-6631
1089-7666
DOI:10.1063/5.0170060