Abstract
The study discusses the issue of entropy generated in a mixed convection Cu–water nanofluid flow in an inclined channel filled with a non-Darcy porous medium with variable permeability taking into account the Navier slip and convection at the boundary. The equations of momentum and temperature are highly nonlinear and coupled, and these are solved using the homotopy analysis method after converting to the dimensionless form. The flow velocity and temperature expressions as required during the entropy generation analysis are obtained. Bejan number is also obtained which indicates the role of heat transfer and viscous dissipation in the entropy generation process. The consequences of the relevant flow parameters are discussed, and the results are shown graphically. It was observed that entropy is minimum just above the center of the channel width.
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The authors thank the TEQIP-III, NIT Mizoram for supporting Mr. Lalrinpuia Tlau financially for his doctoral study.
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Tlau, L., Ontela, S. Mixed convection nanofluid flow in a non-Darcy porous medium with variable permeability: entropy generation analysis. Indian J Phys 95, 2095–2106 (2021). https://doi.org/10.1007/s12648-020-01856-7
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DOI: https://doi.org/10.1007/s12648-020-01856-7