Casson Fluid Flow and Heat Transfer Past an Exponentially Stretching Surface

Numerical solutions for a class of nonlinear differential equations arising in heat and mass transfer of a non-Newtonian fluid towards an exponentially stretching surface are obtained. Casson fluid model is used to characterize the non-Newtonian fluid behaviour. Using the similarity transformations, the governing equations have been transformed into a system of ordinary differential equations. These differential equations are highly nonlinear which cannot be solved analytically. Therefore, bvp4c MATLAB solver has been used for solving it. The flow fields and heat and mass transfer are significantly affected by the physical parameters. The effect of increasing values of the Casson parameter and momentum slip parameter is to suppress the velocity field. But the temperature and concentration is enhanced with increasing Casson parameter and momentum slip parameter.