Second law analysis in MHD flow and heat transfer of a rotating Casson fluid over a stretching surface

Abstract

Second law analysis in three-dimensional MHD boundary layer flow and heat transfer of a rotating Casson fluid over a stretching surface has been investigated. Such flow problems have relevance in extraction and manufacturing of rubber and polymer sheets. Solution of these problems is of great interest as they serve a practical purpose. Partial differential equations governing flow and heat transfer have been transformed into non-linear ordinary differential equations by using suitable similarity transformations. These non-linear differential equations have been solved numerically by using shooting techniques with fourth order Runge-Kutta method. Effects of Casson fluid parameter β, rotation parameter λ, Prandtl number Pr and magnetic field parameter M on velocity profile, temperature profile and skin friction number have been analyzed and depicted through graphs and tables. Entropy generation number and Bejan number have also been obtained and discussed.