Entropy generation for transient Casson fluid past a vertical cylinder with Bejan’s flow visualization

摘要

The present paper aims to visualize a Casson fluid flow over a vertical cylinder using entropy generation with heat and mass functions concept. The non-linear mathematical model is given by the highly time-dependent coupled equations and is solved by using finite difference method. Unsteady profiles of momentum, heat and mass transport coefficients as well as the steady-state flow variables are displayed graphically for distinct values of non-dimensional physical parameters arising in the system. The result of entropy generation parameter increases with rising values of Casson fluid parameter, and the reverse trend is noticed for Bejan number.