Importance of entropy generation on Casson, Micropolar and Hybrid magneto-nanofluids in a suspension of cross diffusion

Abstract The underlying intention of this study is to oversee the flow, heat, and mass transport of hybrid nanofluid (Casson, micropolar, silica, alumina, and Water), Casson, and micropolar fluid flow across a curved stretching sheet. The influence of radiation, cross-diffusion and the applied magnetic field is also looked into. The total entropy rate of the Casson, micropolar and hybrid fluid is discussed. A curvilinear coordinate system models the flow equation. Appropriate similarity transformations are applied to modify the governing nonlinear PDEqns into ODEqns.The proposed system is numerically solved with R-K 4th order based shooting procedure. Outcomes are explained by preparing graphs and tables—comparative studies of obtained results with previously published results discourse. The main outcomes of this study are (a) Hybrid nanofluid has a higher temperature profile than micropolar and Casson fluid. (b) Entropy generation is maximum for larger values of Curvature, temperature difference, diffusion parameter, Dufour and Brinkman number. (c) The micropolar fluid shows higher entropy generation compared to Casson and hybrid nanofluid. (d) Fluid velocity augments with larger magnetic field and Curvature parameter. (e) Casson fluid shows a higher velocity field compared with micropolar and hybrid nanofluid.