Radiation and heat generation aspects on MHD convection of nanofluids in inclined wavy porous double lid-driven enclosures having obstacles: local thermal non-equilibrium

Abstract

The present contribution focuses on the thermal non-equilibrium handling of an unsteady mixed convection nanofluid flow within two-sided wavy and two-sided lid-driven porous enclosures due to the impact of the thermal radiation and inclined magnetic field. The forced convection situation is due to the movements of the left irregular and top regular boundaries. This pattern accounts for such impacts as the inter-phase heat transfer factor impact, the modified conductivity ratio and the thermal radiation aspects. The cavity includes apart heated wall of length b subjected to external Cu water (with particle diameter less than 100 nm) nanofluid. The governing equations have been solved utilizing Galerkin finite element (GFE) approach with CBS algorithm. Numerical outcomes for the flow and heat transfer for the fluid and solid phases are determined for miscellaneous combinations of the physical factors. Graphical and tabular outcomes pointing out interesting features of the physics of the problem are presented and discussed. The forced convection mode is dominance at higher values of $\lambda$ and low values of Hartmann number Ha. Furthermore, the considered range of the nanoparameter ($0\le \phi \le 0.1$) gives an augmentation in the rate of the heat transfer up to 14.54%.

KEYWORDS:

• Magnetohydrodynamics
• nanofluid
• wavy cavity
• thermal non-equilibrium model
• radiative
• obstacle

Disclosure statement

No potential conflict of interest was reported by the author(s).