Irreversibility analysis in time-dependent Darcy–Forchheimer flow of viscous fluid with diffusion-thermo and thermo-diffusion effects

Abstract In this article, we analyze the entropy analysis in unsteady hydromagnetic flow of a viscous fluid over stretching surface. The energy attribute is scrutinized through dissipation, heat source/sink, and radiation. Furthermore, diffusion-thermo thermo-diffusion behaviors are analyzed. physical description rate discussed second law thermodynamics. Additionally, binary chemical reaction considered. Partial differential equations transformed into ordinary ones by adequate variables. Here, used an optimal homotopy method (OHAM) to develop convergent solution. influence variables on velocity, Bejan number, thermal field, concentration, examined graphs. performance drag force, Sherwood temperature gradient versus influential studied. A similar effect holds for velocity variation porosity magnetic An increment field noted reverse trend number variable. augmentation Soret enhances concentration. amplification force Forchheimer number. Higher estimation radiation corresponds rise transfer rate.