Entropy generation optimization in flow of non-Newtonian nanomaterial with binary chemical reaction and Arrhenius activation energy

摘要

Our main focus here is to analyze the radiative mixed convective flow of Casson nanofluid over a stretching surface. Heat transfer is subject to nonlinear thermal radiation, viscous dissipation and heat source/sink. Total entropy is first calculated and then shown graphically for different involved parameters. Velocity is studied with uniform magnetic field and nonlinear mixed convection. Brownian motion and thermophoresis are taken into account. Chemical reaction is considered along with the application of activation energy. Suitable transformations are implemented to convert the governing partial differential equations into their corresponding ordinary ones. Governing equations are tackled by the built in ND solve technique. Results for velocity, temperature, concentration, entropy and Bejan number are presented graphically. (C) 2019 Elsevier B.V. All rights reserved.