Investigation of entropy generation effects in magnetohydrodynamic three-dimensional flow and heat transfer of viscous fluid over a stretching surface

In this study, entropy generation effects in three-dimensional flow and heat transfer of an electrically conducting fluid over a stretching sheet have been investigated. The effects of viscous dissipation are also taken into consideration. The partial differential equations that govern the flow and thermal fields are transformed into non-linear ordinary differential equations by using suitable similarity transformations. The converted equations are then solved analytically with the help of homotopy analysis method and numerically by using shooting technique with Runge–Kutta–Fehlberg method. The values computed by both the methods are compared with a previous study under limiting case. The influence of pertinent parameters involved in the considered problems on flow and heat transfer characteristics are shown with the aid of tables and graphs. Moreover, the effects of these parameters on entropy generation are also illustrated.