The Entropy generation on magneto rotating flow of hybrid nanofluid with porous medium...] {Entropy generation on magneto rotating flow of hybrid nanofluid with porous medium in the presence of darcy dissipation

Abstract

The recent study in nanofluid applications has significantly advanced thermal transport technologies, especially with the emergence of hybrid nanofluids, engineered by dispersing distinct nanoparticles into conventional base fluids. These hybrid formulations provide synergistic thermal enhancements due to their improved thermophysical behavior. In this theoretical investigation, the magnetohydrodynamic (MHD) flow of a viscous hybrid nanofluid is examined within a rotating porous medium confined between parallel plates. The flow system incorporates effects such as Joule heating, thermal radiation, heat generation/absorption, chemical reaction with Arrhenius activation energy, and Darcy dissipation. Both velocity and thermal slip boundary conditions are considered. Entropy generation analysis is also included to assess system irreversibility. The governing nonlinear equations are solved numerically using the bvp4c solver in MATLAB. The study explores the influence of governing parameters on velocity, temperature, concentration, skin friction, Nusselt number, and entropy generation rate. Results reveal that the rotation and magnetic parameters significantly affect the velocity field. At the same time, thermal characteristics are sensitive to the Prandtl number, Eckert number, and Darcy effects within the porous structure.