Effect of MHD on Casson fluid with Arrhenius activation energy and variable properties

The present study investigates MHD Casson nanofluid under the influence of exponential temperature-dependent thermal conductivity and variable viscosity past a stretching surface. After the application of similarity transformations, the governing partial differential equations of the modelled problem are converted into ordinary differential equations and then a solution is achieved with the assistance of the shooting method. The solution obtained with the help of shooting technique is used to analyze the distribution of mass and heat flux over sheet. The effects of various governing parameters on the dimensionless velocity, temperature, and concentration distribution were analyzed and discussed in detail. The simulations of the presented model demonstrated that the surface drag increases as each of the Casson parameter and temperature-dependent thermal conductivity parameter is boosted while the rate of heat transfer is diminished. It is also observed that an increment in the temperature near the surface is noted against the thermal conductivity parameter, whereas the opposite trend is observed away from the surface. (c) 2022 Sharif University of Technology. All rights reserved.