ENTROPY GENERATION ANALYSIS OF MAGNETOHYDRODYNAMIC DARCY-FORCHHEIMER WILLIAMSON HYBRID NANOFLUID FLOW THROUGH POROUS MEDIUM WITH NONLINEAR THERMAL RADIATION

Abstract

The analysis for heat and mass transfer with entropy generation influence on Darcy- Forchheimer non-Newtonian Williamson hybrid nanofluid flow consisting of $Go$/Kerosene oil and $Go$+$Ag$/Kerosene oil through the porous medium due to a permeable stretching surface in the presence of an external magnetic field is made. The heat energy is augmented with nonlinear thermal dissipation, heat source/sink, viscous dissipation, and convective boundary conditions. The mass transpiration with chemical reaction at the wall surface is taken into account. The model nonlinear partial differential equations are transmuted to ordinary differential form before being solved numerically by hiring the Runge-Kutta-Fehlberg method (RKF45) in the shooting technique. The growing strengths of the magnetic field and Forchheimer number resistance make the flow slower and cause to rise in temperature. Further, the addition of a volume fraction of silver with Graphene oxide becomes responsible for decelerating the flow and enhancing heat transportation. The skin friction factor declines in magnitude against exceeding inputs of the Weissenberg number. The entropy generation becomes larger with solid volume fraction and Weissenberg number.