MHD mixed convection of non-Newtonian power-law ferrofluid in a wavy enclosure.

The present study focuses on numerical simulations of magnetohydrodynamic mixed convection and entropy formation in a lid-driven wavy enclosure filled with non-Newtonian power-law ferrofluid. The physical model is a two-dimensional wavy square chamber with thermally adiabatic horizontal boundaries, while the right and left vertical walls maintain a constant temperature of the T C and T H , respectively. For mapping the wavy domain to a simple square domain the Cartesian curvilinear coordinates are used. The governing equations are solved using the finite volume method to explore the mixed convection characteristics in terms of heat transport, velocity, streamlines, isotherms, and entropy formation. Pertinent non-dimensional parameters, such as the Reynolds number (Re), Hartmann number (Ha), power-law index (n), ferroparticle volume fraction (ϕ ), and a fixed Prandtl number ( Pr = 6.8377 ), are used for the numerical simulation. According to the findings, the mean Nusselt numbers ( Nu ¯ ) grow when Ha is reduced and Re, n and ϕ are augmented, and the highest magnitude of Nu ¯ is found, while 4 % ferroparticles are added to the base fluid. The influence of key variables on total entropy production (E s) t reduced by raising Ha. [ABSTRACT FROM AUTHOR]